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1
2 PAGE ,132
3
4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
5;;
6;; FILENAME: CPS Printer Device Driver INIT module (CPSPInn)
7;; MODULE NAME:
8;; TYPE: Assemble file (non-resident code)
9;; LINK PROCEDURE: Link CPSPMnn+CPSFONT+CPSPInn into .EXE format. CPSPM01
10;; must be first. CPSPInn must be last. Everything
11;; before CPSPInn will be resident.
12;; INCLUDE FILES:
13;; CPSPEQU.INC
14;;
15;; LAYOUT : This file is divided into two main section :
16;; ++++++++++++++++++++++++
17;; ++ DEVICE Parser ++
18;; ++++++++++++++++++++++++
19;;
20;; ++++++++++++++++++++++++
21;; ++ INIT Command ++
22;; ++++++++++++++++++++++++
23;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
24 ;;
25INCLUDE CPSPEQU.INC ;;
26 ;;
27PUBLIC INIT ;;
28PUBLIC CODE_END ;; for MAP listing only
29PUBLIC RESIDENT_END ;;
30PUBLIC STACK_ALLOCATED ;;
31 ;;
32 ;;
33EXTRN PRINTER_DESC_NUM:WORD ;;
34EXTRN PRINTER_DESC_TBL:WORD ;;
35EXTRN INIT_CHK:WORD,TABLE:WORD ;;
36EXTRN HARD_SL1:BYTE,RAM_SL1:BYTE ;;
37EXTRN HARD_SL2:BYTE,RAM_SL2:BYTE ;;
38EXTRN HARD_SL3:BYTE,RAM_SL3:BYTE ;;
39EXTRN HARD_SL4:BYTE,RAM_SL4:BYTE ;;
40EXTRN RESERVED1:WORD,RESERVED2:WORD ;;
41 ;;
42EXTRN MSG_NO_INIT_P:BYTE ;;
43EXTRN MSG_NO_INIT:BYTE ;;
44EXTRN MSG_BAD_SYNTAX:BYTE ;;
45EXTRN MSG_INSUFF_MEM:BYTE ;;
46 ;;
47 ;;
48CSEG SEGMENT PARA PUBLIC 'CODE' ;;
49 ASSUME CS:CSEG ;;
50 ;;
51 ;;
52CODE_END EQU $ ;; end of resident code
53 ;;
54 DW 0 ;; -- there are 16 bytes kept,
55 ;; including this word
56 ;;
57RESIDENT_END DW 0FFFH ;; end of extended resident area
58STACK_ALLOCATED DW -1 ;; end of extended resident area
59 ;;
60;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
61;;
62;; End of resident code
63;;
64;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
65;;
66;; Incorporating Device Command Parser :
67;;
68;; -- extracted from PARSE4E.ASM, size 49582 bytes
69;;
70;; (some modifications have to be made in the section right after the parser's
71;; document and before the GET_PARMS_A, one of them is :)
72;;
73;; -- move the TABLE to the printer device driver's main module
74;;
75;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
76;;
77;; ++++++++++++++++++++++++
78;; ++ DEVICE Parser ++
79;; ++++++++++++++++++++++++
80;;
81;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
82;;
83;;
84;; PARSER's code -- non resident
85;;
86;; -- set ES:[DI] pointing to the Request Header before calling PARSER
87;;
88;; to be called as PARSER with ES:[DI] defined as Request Header
89;; If there is any syntax error in the DEVICE command line, the
90;; Parser return a 0 in the first word (NUMBER)of the first table.
91;;
92;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
93;;
94;
95; Description: A command parser for DEVICE command in the CONFIG.SYS file.
96; ------------
97;
98; Procedures contained in the file:
99; ---------------------------------
100; PARSER: Main routine for command processing.
101; GET_CHAR: Gets a character from command line.
102; IS_ALPH: Checks if character is an alpha character.
103; IS_DIGIT: Checks if character is a digit.
104; IS_DELIM: Checks if character is a DOS delimiter.
105; DEVICE_PARSE: Pulls device name from command line and
106; inserts in table.
107; ID_PARSE: Pulls id name from command line and insers in table
108; HWCP_PARMS: Extract HWCP number, converts it to binary and
109; inserts it in table.
110; HWCP_PARSE: Extracts HWCP number if only one number is given.
111; MUL_HWCP: Extracts multiple HWCP's numbers, if they are given
112; in a list.
113; DESG_PARMS: Extracts designate number, converts it to binary
114; and inserts it in table.
115; DESG_FONT: Extracts the designate and the font if both were
116; given in command line.
117; DESG_PARSE: Pulls designate number if it is the only one given.
118; GET_NUMBER: Converts a number to binary.
119; OFFSET_TABLE: Updates the counter in table #1.
120; FIND_RIGHT_BR: Looks for a right bracket.
121;
122;
123; Change history:
124; ---------------
125;
126;
127;LOGIC:
128;------
129; Establish addressability to parameters.
130; Skip until end of path and file name -first delimiter
131;
132; Loop:
133; Isolate the first non-delimiter or non delimeter characters.
134; If End_of_Line_Delimiter then
135; return an error_code
136; Else
137; If first non-delimiter is ALPHA then
138; (assume a device name)
139; Extracts device name
140; Update offset counter
141;
142; Isolate the first non-delimiter characters after id name.
143; If End_of_Line_Delimiter then
144; return an error_code
145; Else
146; If first non-delimiter is ALPHA-NUMARIC or
147; If character is '(' then
148; (assume an id name)
149; Extracts id name
150; Update offset counter
151;
152; Pull out HWCP
153; If error flag is set then exit
154; Else if end of line flag is set then exit
155;
156; Pull out DESG parms
157; If error_flag is set then exit.
158; Else if end of line flag is set then exit
159; Else if Number of devices is four then Exit
160; Else Loop
161;
162;
163;Subroutines Logic:
164;------------------
165;
166; GET_CHAR:
167; ---------
168; Load character in AL
169; If character less than 20h then
170; turn Z-flag on
171;
172; IS_ALPHA:
173; ---------
174; Save character
175; 'Convert character to upper case'
176; If character >=A and <=Z then
177; turn Z-flag on
178; exit
179; Else
180; Restore character
181; exit.
182;
183; IS_DIGIT:
184; --------- If Character >=0 and <=9 then
185; turn Z-flag on
186;
187; IS_DELIMITER:
188; -------------
189; If character a dos delimiter (' ','=',',',';',TAB)
190; then turn Z-flag on
191;
192; DEVICE_PARSE:
193; -------------
194; Set device name length counter.
195; Loop
196; If a dos delimiter then
197; add spaces to name (if require)
198; Else if char is ALPHA-NUM then
199; save in table
200; If name >8 character thne
201; error; exit
202; Else
203; error; exit
204;
205; ID_PARSE:
206; --------- Set id name length counter.
207; Loop
208; If a dos delimiter then
209; add spaces to name (if require)
210; Else if char is ALPHA-NUM then
211; save in table
212; If name >8 character then
213; error; exit
214; Else if char is ')' or '(' then
215; set flags
216; Else
217; error; exit
218;
219; HWCP_PARMS:
220; -----------
221; Loop: Set flags off
222; If char is a DIGIT then
223; convert number to binary
224; update table
225; Else if char is ',' then
226; no HWCP was given
227; exit
228; Else if char is '(' then
229; assume multiple HWCP
230; Else if char is ')' then
231; end of parms, exit
232; Else if not a delimiter then
233; error, exit set carry flag set carry flag
234; Loop
235;
236; HWCP_PARSE:
237; ----------- Increment counter
238; Get number and convert to binary
239; Update the table
240; Set table_5 pointer
241;
242; MUL_HWCP:
243; ---------
244; Loop: If char is ')' then
245; end of list, exit
246; If char is a DIGIT
247; Get number and convert to binary
248; Update table.
249; If char is not a delimiter then
250; error, exit set carry flag
251; Loop
252;
253; DESG_PARMS:
254; -----------
255; Loop: If char is a DIGIT then
256; Get number and convert to binary
257; Update table.
258; If char is a ')' then
259; end of parms, exit
260; If char is a '(' then
261; assume given desg. and font
262; If char is a ',' then
263; no desg ginven
264; scane for ')'
265; If char is not a delimiter then
266; error, exit set carry flag
267; Loop
268;
269; DESG_FONT:
270; ----------
271; Loop: If char is a ',' then
272; no desg number was given
273; update table
274; If char is a ')' then
275; end of desg-font pair, exit
276; If char is a DIGIT then
277; Get number and convert to binary
278; Update table
279; If char not a delimiter then
280; error, exit set carry flag
281; Loop
282;
283; DESG_PARSE:
284; ----------- Get number and conver to binary
285; Update table
286;
287; GET_NUMBER:
288; ----------- Get ASCII number from parms
289; conver to binary
290; add to total
291;
292; OFFSET_TABLE:
293; -------------
294; Increment the number of parms
295;
296; FIND_RIGHT_BR:
297; --------------
298; Loop: If char is ')' then
299; found bracket exit
300; If char is not ' ' then
301; error, exit set carry flag
302; Loop
303; END
304;------------------------------------------------------
305;
306; The following is the table structure of the parser. All fields are
307; two bytes field (accept for the device and id name)
308;
309; TABLE HEADER :
310; ÍÍÍÍÍÍÍÍÍÍÍÍÍÍ
311; ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
312; ³ N = Number of devices. ³
313; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
314; ³ Device # 1 offset ÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ>ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
315; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ ³
316; ³ Device # 2 offset ³ ³ Table_1 (a) ³
317; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ ³
318; ³ Device # 3 offset ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
319; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
320; ³ Device # 4 offset ³
321; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
322;
323;
324; N = 1,2,3 or 4. A two bytes number indicating the number of device specified.
325; DEVICE # N OFFSET : a two bytes offset address to table_1. (ie. Device #1 offset
326; is a pointer to table_1 (a). Device #2 offset is a pointer to table_1
327; (b)...etc.). If an error was detected in the command N is set to zero.
328;
329;
330;
331; TABLE_1 :
332; ÍÍÍÍÍÍÍÍÍ
333;
334; ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
335; ³ N = Number of Offsets. ³ ³ ³
336; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ÚÄÄÄÄÄij Table_2 (a) ³
337; ³ Device Name offset ÄÅÄÄÄÄÙ ³ ³
338; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
339; ³ Device Id offset ÄÅÄÄÄÄÄÄ¿
340; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
341; ³ Device HWCP offset ÄÅÄÄÄÄ¿ ³ ³ ³
342; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ ÀÄÄÄij Table_3 (a) ³
343; ³ Device Desg offset ÄÅÄÄ¿ ³ ³ ³
344; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
345; ³ "Reserved" ³ ³ ³
346; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ³ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
347; ³ ³ ³ ³
348; ³ ÀÄÄÄÄÄij Table_4 (a) ³
349; ³ ³ ³
350; ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
351; ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
352; ³ ³ ³
353; ÀÄÄÄÄÄÄÄij Table_5 (a) ³
354; ³ ³
355; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
356;
357;
358; N=Length of table_1, or the number of offsets contained in table_1.
359; The offsets are pointers (two bytes) to the parameters value of the device.
360; "Reserved" : a two byte memory reserved for future use of the "PARMS" option.
361;
362;
363; TABLE_2 :
364; ÍÍÍÍÍÍÍÍÍ
365;
366; ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
367; ³ N = Length of devices name ³
368; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
369; ³ Device name ³
370; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
371;
372; N = Length of device name. Device length is always 8 byte long.
373; Device Name : the name of the device (eg. LPT1, CON, PRN). The name
374; is paded with spaces to make up the rest of the 8 characters.
375;
376;
377;
378; TABLE_3 :
379; ÍÍÍÍÍÍÍÍÍ
380;
381; ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
382; ³ N = Length of Id name. ³
383; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
384; ³ Id Name ³
385; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
386;
387; N = Length of id name. Id name length is always 8 byte long.
388; Id Name : the name of the id (eg. EGA, VGA, 3812). The name
389; is paded with spaces to make up the rest of the 8 character.
390;
391;
392;
393; TABLE_4 :
394; ÍÍÍÍÍÍÍÍÍ
395;
396; ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
397; ³ N = Length of table. ³
398; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
399; ³ HWCP # 1 ³
400; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
401; ³ HWCP # 2 ³
402; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
403; ³ . ³
404; ³ . ³
405; ³ . ³
406; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
407; ³ HWCP # 10 ³
408; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
409;
410;
411; N = Length of table in words. Or the number of HWCP's.
412; HWCP # N : a hardware code page number converted to binary. The maximum
413; number of pages allowed is 10.
414;
415;
416;
417; TABLE_5 :
418; ÍÍÍÍÍÍÍÍÍ
419;
420; ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
421; ³ N = Length of table. ³
422; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
423; ³ Designate ³
424; ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
425; ³ Font ³
426; ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
427;
428; N = Lenght of table. 0 - nothing was specified
429; 1 - Only a designate was specified.
430; 2 - Designate and font were given. If the Desg field
431; was left empty in the DEVICE command then the
432; Designate field is filled with 0FFFFH.
433; Designate, Font : Are the Desg. and Font binary numbers.
434;
435;------------------------------------------------------
436;
437
438;RESERVED MEMORY:
439TABLE_1 DW ? ; Pointer at offsets.
440TABLE_2 DW ? ; Pointer at device name.
441TABLE_3 DW ? ; Pointer at id name.
442TABLE_4 DW ? ; Pointer at hwcp.
443TABLE_5 DW ? ; Pointer at desg and font.
444;TABLE DB 290 DUP (?) ; Table of parsed parms. Max 4 devices.
445DEVNUM DW ? ; Counter to number of devices.
446RIGHT_FLAG DB ? ; Flag to indicate a left bracket.
447DEV_ERR_FLG DB ? ; Device name error flag.
448ID_ERR_FLG DB ? ; Id name error flag.
449ERROR_FLAG DB ? ; Error flag_terminate program if set to 1.
450COMMA_FLAG DB ? ; Indicate the number of commas incounterd.
451HWCP_FLAG DB ? ; Flag for multiple hwcps.
452DESG_FLAG DB ? ; Flag indicates desg. and font.
453
454;Main part of program-links different sumbroutines together
455
456PARSER PROC
457
458 PUSH AX ; ;;;;;;;;;;;;;;;;;;
459 PUSH BX ; ;
460 PUSH CX ; ; SAVE
461 PUSH DX ; ; ALL
462 PUSH DS ; ; REGISTERS.
463 PUSH ES ; ;
464 PUSH DI ; ;
465 PUSH SI ; ;;;;;;;;;;;;;;;;;;
466
467 LES SI,RH.RH0_BPBA ; Point at all after DEVICE=
468 ; in the CONFIG.SYS file.
469
470
471;Skip to end of file name, to the first DOS delimiter.
472
473 MOV DEVNUM,02H ; Number of devices counter.
474
475GET_PARMS_A: CALL GET_CHAR ; Get command character in AL .
476 JZ EXIT_B ; No parms found.
477 CALL IS_DELIM ; If not a delimiter then.
478 JNE GET_PARMS_A ; Check next character.
479
480 MOV DI,OFFSET TABLE ; Get the table address.
481 ADD DI,02H ; Point at devices offsets.
482 MOV BX,DI ;
483 ADD BX,08H ; Point BX at parms offsets.
484TAB2: CALL UPDATE_TABLE ; Update table pointers value.
485
486CLR_DELIM: CALL GET_CHAR ; Get character into AL.
487 JZ EXIT_B ; No parms found.
488 CALL IS_ALPHA ; If alpha then assume.
489 JZ DEVICE ; A device name.
490 CALL IS_DELIM ; Is it a delimiter
491 JNE EXIT_A ; If not then error.
492 JMP CLR_DELIM ; Get next character.
493
494DEVICE: MOV DEV_ERR_FLG,00H ; Set device error flag off;
495 CALL DEVICE_PARSE ; Call routine to parse device name.
496 CMP DEV_ERR_FLG,01H ; If error flag is
497 JZ EXIT_A ; set then exit.
498 CALL OFFSET_TABLE ; Update table.
499
500ID_PARMS: CALL GET_CHAR ; Load a character in AL.
501 JZ EXIT_A ; Exit if end of line (error).
502 CMP AL,'(' ; If AL is a '(' then
503 JE ID ; Parse ID name.
504 CALL IS_ALPHA ; If an Alpha
505 JE ID ; Then parse ID name.
506 CALL IS_DIGIT ; If a digit
507 JE ID ; Then parse ID name.
508 CALL IS_DELIM ; If not a delimiter
509 JNE EXIT_A ; Then error, exit
510 JMP ID_PARMS ; Get another number
511
512EXIT_B: CMP DEVNUM,02H ; If device number above 2 then
513 JA EXIT_C ; Exit parse.
514 JMP EXIT_A ; Else error, exit
515
516ID: MOV ID_ERR_FLG,00H ; Set id error flag off.
517 CALL ID_PARSE ; Parse ID name.
518 CMP ID_ERR_FLG,01H ; Was error flag set, then
519 JE EXIT_A ; Print error message.
520 CALL OFFSET_TABLE ; Update table of offsets.
521
522 CALL HWCP_PARMS ; Get code page number
523 CMP ERROR_FLAG,01H ; If error, then
524 JE EXIT_A ; Print error message and exit
525 CMP ERROR_FLAG,02H ; If end of string
526 JE EXIT_H ; Then exit.
527
528 CALL DESG_PARMS ; Get designate number
529 CMP ERROR_FLAG,01H ; If error, then
530 JE EXIT_A ; Print error message and exit
531 JMP EXIT_H ; Then exit.
532
533EXIT_A: MOV DI,OFFSET TABLE ; Load table offset
534 MOV DS:WORD PTR [DI],00H ; Set error to on.
535 STC ; Set carry flag
536 JMP EXIT_P ; Exit parse.
537
538EXIT_H: MOV DI,OFFSET TABLE ; Load table offset.
539 ADD DS:WORD PTR [DI],01H ; Increment number of devices.
540 CMP DEVNUM,08H ; If 4 devices loaded
541 JE EXIT_C ; Then exit parse.
542 ADD DEVNUM,02H ; Increment the number of devices
543 ADD DI,DEVNUM ; Point at next devices offset.
544 MOV BX,TABLE_5 ; BX point at
545 ADD BX,06H ; end of previous table.
546 JMP TAB2 ; Get next device.
547
548EXIT_C: CLC
549
550EXIT_P: POP SI ; ;;;;;;;;;;;;;;;;;;
551 POP DI ; ;
552 POP ES ; ; RESTORE
553 POP DS ; ; ALL
554 POP DX ; ; REGISTERS.
555 POP CX ; ;
556 POP BX ; ;
557 POP AX ; ;;;;;;;;;;;;;;;;;;
558 RET
559
560PARSER ENDP
561
562
563;********************************************************
564;** GET_CHAR : a routine to get next character pointed **
565;** to by ES:SI into AL. **
566;********************************************************
567
568GET_CHAR PROC
569
570 MOV AL,ES:BYTE PTR [SI] ; Load character pointed to
571 CMP AL,09H ; by ES:[SI] in AL.
572 JE ZOFF ; If tab then O.K
573 CMP AL,20H ; Turn Z-flag on
574 JL TURN_Z_ON ; if character
575ZOFF: INC SI ; is below
576 JMP GET_CHAR_X ; 20h.
577 ; ( End of line
578TURN_Z_ON: CMP AL,AL ; delimiters ).
579GET_CHAR_X: RET
580
581GET_CHAR ENDP
582
583
584;********************************************************
585;** IS_ALPHA : a routine to check the character in **
586;** AL if it is an alpha character (a...z,A...Z). **
587;** If character is lower case, convert to upper case. **
588;********************************************************
589
590IS_ALPHA PROC
591
592 PUSH AX ; Save value of AL
593 AND AL,0DFH ; Convert to upper case
594 CMP AL,'A' ; If <'A', then
595 JB IS_ALPHA_X ; NZ-flag is set, exit
596 CMP AL,'Z' ; If >'Z', then
597 JA IS_ALPHA_X ; NZ-flag is set, exit
598 CMP AL,AL ; Force Z-flag
599 POP DX ; Discard lower case.
600 JMP IA_X ; Exit.
601IS_ALPHA_X: POP AX ; Restore value of AL
602IA_X: RET
603
604IS_ALPHA ENDP
605
606
607;********************************************************
608;** IS_DIGIT : a routine to check if the character in **
609;** AL register is a digit (i.e. 1..9). **
610;********************************************************
611
612IS_DIGIT PROC
613
614 CMP AL,'0' ; If < '0' then
615 JB IS_NUM_X ; NZ-flag is set, exit
616 CMP AL,'9' ; If > '9' then
617 JA IS_NUM_X ; NZ-flag is set, exit
618 CMP AL,AL ; Set Z-flag to indecate digit
619IS_NUM_X: RET
620
621IS_DIGIT ENDP
622
623
624;********************************************************
625;** IS_DELIM : This routine check if the character in **
626;** AL is a delimiter. ('+',' ',';',',','=',tab) **
627;********************************************************
628
629IS_DELIM PROC
630
631 CMP AL,' ' ; Test for space.
632 JE IS_DELIM_X ; Z-flag is set, exit
633 CMP AL,',' ; Test for comma.
634 JE IS_DELIM_X ; Z-flag is set, exit
635 CMP AL,';' ; Test for semicolon.
636 JE IS_DELIM_X ; Z-flag is set, exit
637 CMP AL,'=' ; Test for equal sign.
638 JE IS_DELIM_X ; Z-flag is set, exit
639 CMP AL,09h ; Test for TAB.
640
641IS_DELIM_X: RET ; Exit
642
643IS_DELIM ENDP
644
645
646;********************************************************
647;** DEVICE_PARSE : Parse the device driver name and **
648;** store in table. Update offset. **
649;********************************************************
650
651DEVICE_PARSE PROC
652
653 MOV DI,TABLE_2
654 MOV DS:WORD PTR [DI],0008H ; Save dev name size.
655 ADD DI,02H ; Increment DI.
656 MOV CX,9 ; Set counter.
657NEXT_C: CALL IS_ALPHA ; if Check then.
658 JZ SAVE_C ; Save it.
659 CALL IS_DIGIT ; if Digit then.
660 JZ SAVE_C ; Save it.
661 CMP AL,'-' ; If '-' then.
662 JZ SAVE_C ; Save it.
663 CALL IS_DELIM ; If a delimiter then.
664 JZ ADD_SPACE1 ; Pad with spaces.
665 CMP AL,':' ; If a colon
666 JE ADD_SPACE1 ; then end device parse
667 JMP ERR_DEV_PAR ; Else an error.
668
669SAVE_C: DEC CX ; Decrement counter.
670 CMP CX,0 ; If counter zero then.
671 JE ERR_DEV_PAR ; Error.
672 MOV DS:BYTE PTR [DI],AL ; Save char in table.
673 INC DI ; Increment pointer.
674 CALL GET_CHAR ; Get another char.
675 JZ ERR_DEV_PAR
676 JMP NEXT_C ; Check char.
677
678ERR_DEV_PAR: MOV DEV_ERR_FLG,01H ; Set error flag.
679 JMP DEV_PAR_X ; Exit.
680
681ADD_SPACE1: DEC CX ; Check counter.
682 CMP CX,1
683 JL DEV_PAR_X ; Exit if already 8.
684LL1: MOV DS:BYTE PTR [DI],' ' ; Pad name with spaces.
685 INC DI ; Increment pointer.
686 LOOP LL1 ; Loop again.
687DEV_PAR_X: RET
688
689DEVICE_PARSE ENDP
690
691
692;********************************************************
693;** ID_PARSE : Parse the id driver name and **
694;** store in table. Update offset. **
695;********************************************************
696
697ID_PARSE PROC
698
699 MOV DI,TABLE_3
700 MOV DS:WORD PTR [DI],0008H ; Save dev name size.
701 ADD DI,02H ; Increment DI.
702 MOV RIGHT_FLAG,00H ; Clear flag.
703 MOV CX,9 ; Set counter.
704
705NEXT_I: CALL IS_ALPHA ; If Check then.
706 JZ SAVE_I ; Save it.
707 CALL IS_DIGIT ; if Digit then.
708 JZ SAVE_I ; Save it.
709 CMP AL,'-' ; If '-' then.
710 JZ SAVE_I ; Save it.
711 CMP AL,'(' ; If '(' then.
712 JE RIG_BR_FLG ; Set flag.
713 CMP AL,')' ; If ')' then
714 JE BR_FLG_LEF ; Pad with spaces.
715 CALL IS_DELIM ; If a delimiter then.
716 JZ ADD_SPACE2 ; Pad with spaces.
717 JMP ERR_ID_PAR ; Else an error.
718
719SAVE_I: DEC CX ; Decrement counter.
720 CMP CX,0 ; If counter zero then.
721 JLE ERR_ID_PAR ; Error.
722 MOV DS:BYTE PTR [DI],AL ; Save char in table.
723 INC DI ; Increment pointer.
724 CALL GET_CHAR ; Get another char.
725 JZ ADD_SPACE2 ; Exit routine.
726 JMP NEXT_I ; Check char.
727
728ERR_ID_PAR: MOV ID_ERR_FLG,01H ; Set error falg on.
729 JMP ID_PAR_X ; Exit.
730
731BR_FLG_LEF: CMP RIGHT_FLAG,01H ; If left bracket was
732 JNE ERR_ID_PAR ; found and no previous
733 JMP ADD_SPACE2 ; Bracket found, then error
734
735RIG_BR_FLG: CMP RIGHT_FLAG,01H ; If more than one bracket
736 JE ERR_ID_PAR ; then error.
737 CMP CX,09 ; If '(' and already id
738 JB ERR_ID_PAR ; then error.
739 MOV RIGHT_FLAG,01H ; Set flag for.
740 CALL GET_CHAR ; Left brackets.
741 JZ ERR_ID_PAR ; If end of line,exit.
742 JMP NEXT_I ; Check character.
743
744ADD_SPACE2: DEC CX ; Check counter.
745 CMP CX,1
746 JL ID_PAR_X ; Exit if already 8.
747
748LL2: MOV DS:BYTE PTR [DI],' ' ; Pad name with spaces.
749 INC DI ; Increment pointer.
750 LOOP LL2 ; Loop again.
751
752ID_PAR_X: RET
753
754ID_PARSE ENDP
755
756;********************************************************
757;** HWCP_PARMS : Scane for the hardware code page, and **
758;** parse it if found. Flag codes set to: **
759;** ERROR_FLAG = 0 - parsing completed. No error. **
760;** ERROR_FLAG = 1 - error found exit parse. **
761;** ERROR_FLAG = 2 - end of line found, exit parse. **
762;********************************************************
763
764
765HWCP_PARMS PROC
766
767 MOV COMMA_FLAG,00H ; Set the comma flag off.
768 MOV ERROR_FLAG,00H ; Set the error flag off.
769 DEC SI ; Point at current char in Al.
770 CMP RIGHT_FLAG,01H ; If no left brackets then
771 JNE LEFT_BR ; Exit parse.
772
773HWCP_1: CALL GET_CHAR ; Load character in AL.
774 JZ LEFT_BR ; Exit, if end of line.
775 CALL IS_DIGIT ; Check if digit, then
776 JE HP1 ; Parse hwcp parms.
777 CMP AL,',' ; If a comma
778 JE COMMA_1 ; Jump to comma_1
779 CMP AL,')' ; If a ')' then
780 JE RIGHT_BR ; end of current dev parms.
781 CMP AL,'(' ; If a '(' then
782 JE HWCP_2 ; There are multible hwcp.
783 CALL IS_DELIM ; Else, if not a delimiter
784 JNE EXIT_2 ; Then error, exit
785 JMP HWCP_1 ; Get another character.
786
787LEFT_BR: CMP RIGHT_FLAG,01H ; If no left bracket
788 JE EXIT_2 ; Then error, exit
789 JMP RB1 ; Jump to rb1
790
791COMMA_1: CMP COMMA_FLAG,01H ; If comma flag set
792 JE COM_2_HC ; Then exit hwcp parse.
793 MOV COMMA_FLAG,01H ; Else set comma flag.
794JMP HWCP_1 ; Get another character.
795
796HWCP_2: CMP RIGHT_FLAG,01H ; If left bracket not set
797 JNE EXIT_2 ; then error.
798 CALL MUL_HWCP ; else call multiple hwcp
799 ADD DI,02H ; routine. Increment DI
800 MOV TABLE_5,DI ; Desg. Table starts at end
801 CALL OFFSET_TABLE ; Update table of offsets.
802 JMP HP_X ; Exit.
803
804HP1: JMP HWCP ; Jump too long.
805
806COM_2_HC: MOV DI,TABLE_4 ; DI points at hwcp table
807 MOV DS:WORD PTR [DI],0000H ; Set number of pages to
808 MOV COMMA_FLAG,00H ; Zero and reset comma flag.
809 ADD DI,02H ; Increment DI.
810 MOV TABLE_5,DI ; Desg. Table starts at end
811 CALL OFFSET_TABLE ; Update table of offsets.
812 JMP HP_X ; of hwcp table. Exit.
813
814RIGHT_BR: CMP RIGHT_FLAG,01H ; If left brackets not
815 JNE EXIT_2 ; Found then error.
816RB1: MOV ERROR_FLAG,02H ; Set end of line flag.
817 MOV BX,TABLE_4 ; Point at hwcp table
818 ADD BX,02H ; Adjust pointer to desg
819 MOV TABLE_5,BX ; table, and save in table_5
820 MOV DI,TABLE_1 ; Point at table of offsets
821 ADD DI,08H ; Set at DESG offset
822 MOV DS:WORD PTR [DI],BX ; Update table.
823 JMP HP_X ; Exit
824
825
826
827EXIT_2: MOV ERROR_FLAG,01H ; Set error flag.
828 JMP HP_X ; and exit.
829
830HWCP: CMP RIGHT_FLAG,01H ; If left brackets not
831 JNE EXIT_2 ; Found then error.
832 CALL HWCP_PARSE ; Call parse one hwcp.
833 CMP ERROR_FLAG,01H ; If error flag set
834 JE HP_X ; Then exit, else
835 CALL OFFSET_TABLE ; Update table of offsets.
836
837HP_X: RET
838
839HWCP_PARMS ENDP
840
841
842;********************************************************
843;** HWCP_PARSE : Parse the hardware code page page **
844;** number and change it from hex to binary. **
845;********************************************************
846
847HWCP_PARSE PROC
848
849 MOV DI,TABLE_4 ; Load address of hwcpages.
850 ADD DS:WORD PTR [DI],0001H ; Set count to 1
851
852 CALL GET_NUMBER ; Convert number to binary.
853 CMP ERROR_FLAG,01H ; If error then
854 JE HWCP_X ; Exit.
855 MOV DS:WORD PTR [DI+2],BX ; Else, save binary page number
856 ADD DI,04H ; Increment counter
857 MOV TABLE_5,DI ; Set pointer of designate num
858
859HWCP_X: RET
860
861HWCP_PARSE ENDP
862
863
864;********************************************************
865;** MUL_HWCP : Parse multiple hardware code pages **
866;** and convert them from hex to binary numbers. **
867;********************************************************
868
869MUL_HWCP PROC
870
871 MOV DI,TABLE_4 ; Load offset of table_4
872 MOV BX,DI ; in DI and Bx.
873 MOV HWCP_FLAG,00H ; Set hwcp flag off.
874
875MH1: CALL GET_CHAR ; Load character in AL.
876 JZ MH3 ; Exit if end of line.
877 CMP AL,')' ; If ')' then exit
878 JE MH2 ; end of parms.
879 CALL IS_DIGIT ; If a digit, then
880 JE MH4 ; Convert number to binary.
881 CALL IS_DELIM ; If not a delimiter
882 JNE MH3 ; then error, exit
883 JMP MH1 ; get another character.
884
885MH2: CALL GET_CHAR ; Get next character
886 JMP MH_X ; and exit.
887
888MH3: MOV ERROR_FLAG,01H ; Set error flag on.
889 JMP MH_X ; Exit.
890
891MH4: ADD HWCP_FLAG,01H ; Set hwcp flag on (0 off)
892 ADD DI,02H ; Increment table pointer
893 PUSH BX ; Save Bx
894 CALL GET_NUMBER ; Convert number to binary.
895 MOV DS:WORD PTR [DI],BX ; Add number to table
896 POP BX ; Restore BX.
897 CMP ERROR_FLAG,01H ; If error then
898 JE MH_X ; Exit.
899 ADD DS:WORD PTR [BX],01H ; Increment hwcp count.
900 DEC SI ; Point at character in AL
901 JMP MH1 ; (delimeter or ')').
902MH_X: RET
903
904MUL_HWCP ENDP
905
906
907
908;********************************************************
909;** DESG_PARMS : Scane for the designate numbers, and **
910;** parse it if found. Flag codes set to: **
911;** ERROR_FLAG = 0 - parsing completed. No error. **
912;** ERROR_FLAG = 1 - error found exit parse. **
913;** ERROR_FLAG = 2 - end of line found, exit parse. **
914;********************************************************
915
916
917DESG_PARMS PROC
918
919 MOV DI,TABLE_1 ; Get offset of dev in DI
920 MOV BX,TABLE_5 ; & offset of desg. in BX.
921 ADD DI,08 ; Location of desg offset in table.
922 MOV DS:WORD PTR [DI],BX ; Update table.
923 MOV COMMA_FLAG,00H ; Set comma flag off.
924
925 cmp al,'('
926 je df
927 cmp al,')'
928 je right_br2
929
930 cmp al,','
931 jne desg_parm1
932 mov comma_flag,01h
933
934DESG_PARM1: CALL GET_CHAR ; Get character in AL.
935 JZ EXIT_3 ; Error, if end of line
936 CALL IS_DIGIT ; If character is a digit
937 JE DESG ; Then convert to binary.
938 CMP AL,')' ; If a ')', then
939 JE RIGHT_BR2 ; end of parameters.
940 CMP AL,'(' ; If a '(' then
941 JE DF ; parse desg and font.
942 CMP AL,',' ; If a comma then
943 JE DP3 ; set flag.
944 CALL IS_DELIM ; If not a delimiter
945 JNE EXIT_3 ; then error.
946 JMP DESG_PARM1 ; Get another character.
947
948RIGHT_BR2: CMP RIGHT_FLAG,01H ; IF no '(' encountered,
949 JNE EXIT_3 ; then error, exit
950 JMP DP_x ; Jump to DP1.
951
952EXIT_3: MOV ERROR_FLAG,01H ; Set error flag on
953 JMP DP_X ; Exit.
954
955DF: CMP RIGHT_FLAG,01H ; If no '(' encountered
956 JB EXIT_3 ; then error, exit
957 CALL DESG_FONT ; Parse desg and font.
958 JMP DP1 ; Jump to DP1.
959
960DP2: CALL FIND_RIGHT_BR ; Check for ')'
961 JMP DP_X ; Exit.
962
963DP3: CMP COMMA_FLAG,01H ; If comma flag set
964 JE DP2 ; then error
965 MOV COMMA_FLAG,01H ; Else set comma flag on.
966 JMP DESG_PARM1 ; Get another character.
967
968DESG: MOV ERROR_FLAG,00H ; Set error flag off.
969 CALL DESG_PARSE ; Parse desg.
970DP1: CMP ERROR_FLAG,01H ; If error flag on then
971 JE DP_X ; Exit,
972 CALL FIND_RIGHT_BR ; Else check for ')'
973 CALL OFFSET_TABLE ; Update table
974
975DP_X: RET
976
977DESG_PARMS ENDP
978
979
980
981;********************************************************
982;** DESG_FONT : Parse the designate and font numbers & **
983;** change them from decimal to binary. **
984;********************************************************
985
986
987DESG_FONT PROC
988
989
990 MOV DI,TABLE_5 ; Get desg font table.
991 MOV COMMA_FLAG,00H ; Set comma flag off.
992DF1: CALL GET_CHAR ; Load a character in AL.
993 JZ DF3 ; Error if end of line.
994 CMP AL,',' ; Check if a comma.
995 JE DF2 ; Set flag.
996 CALL IS_DIGIT ; If a digit, then
997 JE DF5 ; Convert number to binary.
998 CMP AL,')' ; If a ')' then
999 JE DF4 ; Exit.
1000 CALL IS_DELIM ; If not a delimiter
1001 JNE DF3 ; then error, exit
1002 JMP DF1 ; Get another character.
1003
1004DF2: CMP COMMA_FLAG,01H ; If comma flag on
1005 JE DF3 ; then error, exit
1006 MOV COMMA_FLAG,01H ; Set comma flag on
1007 ADD DS:WORD PTR [DI],01H ; Increment desg counter.
1008 MOV DS:WORD PTR [DI+2],0FFFFH ; Load ffffh for desg empty
1009 JMP DF1 ; field.
1010
1011DF3: MOV ERROR_FLAG,01H ; Set error flag on.
1012 JMP DF_X ; Exit.
1013
1014DF4: CMP DESG_FLAG,00H ; If desg flag off
1015 JE DF3 ; then error, exit
1016 JMP DF_X ; Else exit.
1017
1018DF5: ADD DS:WORD PTR [DI],01H ; Increment desg font count.
1019 CMP DESG_FLAG,01H ; If desg flag is on
1020 JE DF6 ; then get font.
1021 CMP COMMA_FLAG,01H ; if comma flag is on
1022 JE DF6 ; then get font.
1023 MOV DESG_FLAG,01H ; Set desg flag on
1024 JMP DF7 ; Get desg number.
1025
1026DF6: ADD DI,02H ; adjust pointer to font.
1027 MOV DESG_FLAG,02H ; Set desg and font flag.
1028DF7: CALL GET_NUMBER ; Get a number & convert to
1029 CMP ERROR_FLAG,01H ; binary.
1030 JE DF_X ; If error flag set, Exit.
1031 MOV DS:WORD PTR [DI+2],BX ; Store number in table.
1032 CMP DESG_FLAG,02H ; If desg and font flag
1033 JNE DF1 ; not set, then get char.
1034 CALL FIND_RIGHT_BR ; Check for right bracket.
1035
1036DF_X: RET
1037
1038DESG_FONT ENDP
1039
1040
1041;********************************************************
1042;** DESG_PARSE : Parse the designate number and **
1043;** change it from decimal to binary. **
1044;********************************************************
1045
1046DESG_PARSE PROC
1047
1048 MOV DI,TABLE_5 ; Load designate location
1049 ADD DS:WORD PTR [DI],0001H ; Update table count.
1050
1051 CALL GET_NUMBER ; Get the ascii number and
1052 CMP ERROR_FLAG,01H ; conver it to binary
1053 JE DESG_X ; If error then exit
1054
1055 MOV DS:WORD PTR [DI+2],BX ; Else, save desg number
1056
1057
1058DESG_X: RET
1059
1060DESG_PARSE ENDP
1061
1062
1063;********************************************************
1064;** GET_NUMBER : Convert the number pointed to by SI **
1065;** to a binary number and store it in BX **
1066;********************************************************
1067
1068GET_NUMBER PROC
1069
1070 MOV CX,0AH ; Set multiplying factor
1071 XOR BX,BX ; Clear DX
1072
1073NEXT_NUM: SUB AL,30H ; Conver number to binary
1074 CBW ; Clear AH
1075 XCHG AX,BX ; Switch ax and bx to mul
1076 MUL CX ; already converted number by 10.
1077 JO ERR_NUM ; On over flow jump to error.
1078 ADD BX,AX ; Add number to total.
1079 JC ERR_NUM ; On over flow jump to error.
1080 XOR AX,AX ; Clear AX (clear if al=0a).
1081 CALL GET_CHAR ; Get next character
1082 JZ GET_NUM_X ; Exit, if end of line.
1083 CALL IS_DIGIT ; Call is digit.
1084 JNZ GET_NUM_X ; Exit if not a number.
1085 JMP NEXT_NUM ; Loop.
1086
1087ERR_NUM: MOV ERROR_FLAG,01H ; Set error code to 1.
1088
1089GET_NUM_X: RET
1090
1091GET_NUMBER ENDP
1092
1093
1094;********************************************************
1095;** UPDATE_TABLE : This routine set up pointers to the **
1096;** different offsets of the different tables **
1097;********************************************************
1098
1099UPDATE_TABLE PROC
1100
1101 MOV DS:WORD PTR [DI],BX ; Offset of offsets
1102 MOV TABLE_1,BX ; Table_1 points at offsets
1103
1104 MOV DI,BX ;
1105 ADD BX,0CH ;
1106 MOV DS:WORD PTR [DI+2],BX ; Offset of DEVICE name.
1107 MOV TABLE_2,BX ; Table_2 point at device name.
1108
1109 ADD BX,0AH ;
1110 MOV DS:WORD PTR [DI+4],BX ; Offset of ID name.
1111 MOV TABLE_3,BX ; Table_3 point at ID name.
1112
1113 ADD BX,0AH ;
1114 MOV DS:WORD PTR [DI+6],BX ; Offset of HWCP pages.
1115 MOV TABLE_4,BX ; Table_4 point at HWCP pages.
1116
1117 RET
1118
1119UPDATE_TABLE ENDP
1120
1121
1122;********************************************************
1123;** OFFSET_TABLE : This routine set up pointers of **
1124;** tables number one and two. **
1125;********************************************************
1126
1127OFFSET_TABLE PROC
1128
1129 MOV DI,TABLE_1 ; Increment the number
1130 ADD DS:WORD PTR [DI],01H ; of parms foun. (ie. id,hwcp
1131 RET ; and desg)
1132
1133OFFSET_TABLE ENDP
1134
1135
1136;********************************************************
1137;** FIND_RIGHT_BR :This routine scane the line for a **
1138;** ')' if cannot find it turns error flag on **
1139;********************************************************
1140
1141FIND_RIGHT_BR PROC
1142
1143FBR1: CMP AL,')' ; If a right bracket
1144 JE FBR_X ; then exit.
1145 CMP AL,' ' ; If not a space
1146 JNE FBR2 ; Then error.
1147 CALL GET_CHAR ; Get a character
1148 JZ FBR2 ; If end of line then exit.
1149 JMP FBR1 ; Else get another character.
1150
1151FBR2: MOV ERROR_FLAG,01H ; Set error flag on
1152FBR_X: MOV AL,20H ; Erase character from AL.
1153 RET
1154
1155FIND_RIGHT_BR ENDP
1156
1157;;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1158;;
1159;; ++++++++++++++++++++++++
1160;; ++ INIT Command ++
1161;; ++++++++++++++++++++++++
1162;;
1163;;==== Command Code 0 - Initialization ======
1164;;
1165;; messages returned :
1166;;
1167;; msg_bad_syntax -- syntax error from parser, no driver installation
1168;; msg_no_init -- device cannot be initialised
1169;; msg_insuff_mem -- insufficient memory
1170;;
1171;; layout : the initialization is done in two stages :
1172;;
1173;; ++++++++++++++++++++++++
1174;; ++ INIT Stage 1 ++ to examine and extract the
1175;; ++++++++++++++++++++++++ parameters defined for the
1176;; device_id in DEVICE command,
1177;; according to the printer
1178;; description table for the
1179;; device_id.
1180;;
1181;; ++++++++++++++++++++++++
1182;; ++ INIT Stage 2 ++ to set the BUFfer for the LPTn
1183;; ++++++++++++++++++++++++ or PRN according to device_id's
1184;; parameters
1185;;
1186;;
1187;;
1188;;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1189 ;;
1190DEV_NUM dw ? ;;
1191 ;;
1192;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1193;
1194; Tables for the deivce_id parameters in the order of device_id in the
1195; PARSE table
1196; === the tables serves as the link between LPTn to be defined in the 2nd
1197; stage, and the device_id that is processed in the first stage.
1198;
1199;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1200 ;;
1201 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1202 ;; device ID indicators :
1203 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1204DID_MAX EQU 4 ;; device entris exepcted in PARSE
1205;; not more than 16. ;; table
1206 ;;
1207DID_STATUS DW 0 ;; status of parsing device id
1208 ;; = 0 : all Device-ID bad
1209 ;; -- see DID_BIT
1210 ;;
1211DID_MATCH DW 0 ;; this DID has device_name matched
1212 ;;
1213DID_FAIL DW 0 ;; to fail the good DID_STATUS and
1214 ;; the matched name. (due to
1215 ;; inconsistency among the same LPTn
1216 ;; or between PRN and LPT1.)
1217 ;;
1218;; (DID_STATUS) AND (DID_MATCH) XOR (DID_FAIL) determines the success of DID
1219 ;; initialization
1220 ;;
1221DID_ONE EQU 00001H ;; first device-ID
1222DID_TWO EQU 00002H ;; second "
1223DID_THREE EQU 00004H ;; third "
1224DID_FOUR EQU 00008H ;; fourth "
1225;;maximun number of device_id = 16 ;;
1226 ;;
1227DID_BIT LABEL WORD ;;
1228 DW DID_ONE ;;
1229 DW DID_TWO ;;
1230 DW DID_THREE ;;
1231 DW DID_FOUR ;;
1232;;maximun number of device_id = 16 ;;
1233 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1234 ;; device paramters according to the
1235 ;; device_id defined in DEVICE and the
1236 ;; parameters defined for the device_id
1237 ;; in the printer description table.
1238 ;;
1239HRMAX LABEL word ;; number of hwcp+cart slots supported
1240 DW 0 ;; did = 1
1241 DW 0 ;; did = 2
1242 DW 0 ;; did = 3
1243 DW 0 ;; did = 4
1244;upto max DID_MAX ;;
1245 ;;
1246CTMAX LABEL word ;; number of cart slots supported
1247 DW 0 ;; did = 1
1248 DW 0 ;; did = 2
1249 DW 0 ;; did = 3
1250 DW 0 ;; did = 4
1251;upto max DID_MAX ;;
1252 ;;
1253RMMAX LABEL word ;; number of ram-slots supported
1254 DW 0 ;; did = 1
1255 DW 0 ;; did = 2
1256 DW 0 ;; did = 3
1257 DW 0 ;; did = 4
1258;upto max DID_MAX ;;
1259 ;;
1260RBUMAX LABEL word ;; number of ram-designate slots
1261 DW 0 ;; did = 1
1262 DW 0 ;; did = 2
1263 DW 0 ;; did = 3
1264 DW 0 ;; did = 4
1265;upto max DID_MAX ;;
1266 ;;
1267DESCO LABEL word ;; offset to the description table
1268 ;; where the device_id is defined.
1269 DW -1 ;; did = 1
1270 DW -1 ;; did = 2
1271 DW -1 ;; did = 3
1272 DW -1 ;; did = 4
1273;upto max DID_MAX ;;
1274 ;;
1275FSIZE LABEL word ;; font size of the device
1276 DW 0 ;; did = 1
1277 DW 0 ;; did = 2
1278 DW 0 ;; did = 3
1279 DW 0 ;; did = 4
1280;upto max DID_MAX ;;
1281 ;;
1282;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1283;
1284; Hard/RAM slots table in the order of DEVICE parameters
1285;
1286; number of entries in all HARD_SLn is determined by the max. {HSLOTS}, and
1287; number of entries in all RAM_SLn is determined by the max. {RSLOTS}
1288;
1289; -- they are initialized according to the device_id defined in the DEVICE.
1290;
1291;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1292 ;;
1293HARD_SLA LABEL word ;; index in the order of device in
1294 DW OFFSET (HARD_SL1) ;; the PARSE-talbes
1295 DW OFFSET (HARD_SL2) ;;
1296 DW OFFSET (HARD_SL3) ;;
1297 DW OFFSET (HARD_SL4) ;;
1298; up to DID_MAX ;;
1299 ;;
1300RAM_SLA LABEL word ;;
1301 DW OFFSET (RAM_SL1) ;;
1302 DW OFFSET (RAM_SL2) ;;
1303 DW OFFSET (RAM_SL3) ;;
1304 DW OFFSET (RAM_SL4) ;;
1305; up to DID_MAX ;;
1306 ;;
1307;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1308;;
1309;; ++++++++++++++++++++++++
1310;; ++ INIT Command ++
1311;; ++++++++++++++++++++++++
1312;;
1313;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1314 ;;
1315INIT PROC NEAR ;;
1316 ;;
1317;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1318;; parse the initialization parameters in DEVICE command
1319;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1320;;
1321 ;;
1322 CMP BUF.BFLAG,BF_PRN ;; since PRN is the FIRST device header
1323 JNE NOT_PRN ;;
1324 ;;
1325 ;;
1326 MOV AX,OFFSET CODE_END ;; defined only once for each DEVICE
1327 XOR CX,CX ;;
1328 MOV CL,4 ;;
1329 SHR AX,CL ;;
1330 PUSH CS ;;
1331 POP CX ;;
1332 ADD AX,CX ;;
1333 INC AX ;; leave 16 bytes,room for resident_end
1334 MOV RESIDENT_END,AX ;;
1335 ;;
1336 CALL PARSER ;; call only once, for PRM
1337 ;;
1338 JMP PROCESS_TABLE ;;
1339 ;;
1340NOT_PRN : ;;
1341 CMP DEV_NUM,1 ;;
1342 ;;
1343 JNB PROCESS_TABLE ;;
1344 ;;
1345 JMP SYNTAX_ERROR ;;
1346 ;;
1347 ;;
1348 ;;
1349;;
1350;;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1351;;
1352;; ++++++++++++++++++++++++
1353;; ++ INIT Stage 1 ++
1354;; ++++++++++++++++++++++++
1355;;
1356;; INIT - FIRST STAGE :
1357;;
1358;; == test and extract if the parameters on device-id is valid
1359;; == determine the DID_STATUS according to the validity of the parameters
1360;; == procedure(s) called -- DID_EXTRACT
1361;;
1362;;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1363 ;;
1364PROCESS_TABLE : ;;
1365 ;;
1366 PUSH CS ;;
1367 POP ES ;; PSE points to Device offsets
1368 MOV DI,OFFSET(table) ;; ES:[DI]
1369 MOV DX,PSE.PAR_DEV_NUM ;;
1370 MOV DEV_NUM,DX ;;
1371 ;;
1372 CMP DEV_NUM,0 ;;
1373 JNZ NO_SYNTAX_ERR ;;
1374 ;;
1375 XOR AX,AX ;;
1376 MOV AH,09H ;;
1377 MOV DX,OFFSET MSG_BAD_SYNTAX;;
1378 INT 21H ;;
1379 ;;
1380 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1381SYNTAX_ERROR : ;; set the request header status
1382 ;; according to the STATE
1383 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1384 MOV AX, RESIDENT_END ;;
1385 PUSH CS ;;
1386 POP CX ;; CX=CS
1387 SUB AX,Cx ;; additional segment required.
1388CS_LOOP1: ;;
1389 CMP AX,1000H ;;
1390 JB CS_LPEND1 ;;
1391 ADD CX,1000H ;;
1392 SUB AX,1000H ;;
1393 JMP CS_LOOP1 ;;
1394 ;;
1395CS_LPEND1: ;;
1396 SHL AX,1 ;;
1397 SHL AX,1 ;;
1398 SHL AX,1 ;;
1399 SHL AX,1 ;;
1400 ;;
1401 LES DI,dword ptr buf.rh_ptro ;; get Request Header address
1402; MOV RH.RH0_ENDO,AX ;;
1403 MOV RH.RH0_ENDO,0 ;;
1404 MOV RH.RH0_ENDS,CX ;;
1405 MOV RH.RHC_STA,stat_cmderr ;; set status in request header
1406 ;;
1407 JMP INIT_RETurn ;;
1408 ;;
1409 ;;
1410NO_SYNTAX_ERR : ;;
1411 ;;
1412 CMP DX,DID_MAX ;;
1413 JNA NEXT_DID ;;
1414 ;;
1415 MOV INIT_CHK,0001H ;; ERROR 0001
1416 JMP BAD_DID ;; more than supported no. of device
1417 ;;
1418NEXT_DID: ;;
1419 PUSH DI ;; pointer to PAR_OT (table 1)
1420 AND DX,DX ;;
1421 JNZ SCAN_DESC ;;
1422 JMP END_DID ;; DI = offset to the 1st PARSE table
1423;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1424SCAN_DESC: ;;
1425 MOV DI,PSE.PAR_OFF ;; points to the nth device
1426 ;;
1427 ;; find the description for the
1428 ;;device-id
1429 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1430 MOV CX,PRINTER_DESC_NUM ;;
1431 MOV SI, OFFSET(PRINTER_DESC_TBL); offset to the description table
1432 PUSH CS ;;
1433 POP DS ;;
1434; $SEARCH ;;
1435$$DO1:
1436 PUSH CX ;; save device count
1437 PUSH SI ;; pointer to printer-descn's offset
1438 MOV SI,CS:WORD PTR[SI] ;;
1439 AND CX,CX ;;
1440 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1441; $LEAVE Z ;; LEAVE if no more device description
1442 JZ $$EN1
1443 PUSH DI ;; save offset to PAR_DEVOT
1444 MOV DI,PSE.PAR_DIDO ;;
1445 MOV CX,PSE.PAR_DIDL ;; length of parsed device name
1446 LEA DI,PSE.PAR_DID ;; pointer to parse device name
1447 ;;
1448 PUSH SI ;;
1449 LEA SI,[SI].TYPEID ;; offset to name of device-id
1450 REPE CMPSB ;;
1451 POP SI ;;
1452 POP DI ;; get back offset to PAR_DEVOT
1453 ;;;;;;;;;;;;;;;;;;;;;;;;
1454; $EXITIF Z ;; EXIT if name matched
1455 JNZ $$IF1
1456 ;;
1457 CALL DID_EXTRACT ;; get the parameters
1458 ;;
1459 POP SI ;; balance push-pop
1460 POP CX ;;
1461 ;;
1462 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1463; $ORELSE ;; try next description :
1464 JMP SHORT $$SR1
1465$$IF1:
1466 ;;
1467 POP SI ;; of printer_descn offset table
1468 INC SI ;;
1469 INC SI ;; next offset to PRINTER_DESCn
1470 ;;
1471 POP CX ;; one description less
1472 DEC CX ;;
1473 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1474; $ENDLOOP ;; DEVICE-ID not defined in
1475 JMP SHORT $$DO1
1476$$EN1:
1477 ;; printer_desc;
1478 ;;
1479 MOV AX,INIT_CHK ;;
1480 AND AX,AX ;;
1481 JNZ UNCHANGED ;;
1482 MOV INIT_CHK,0004H ;; ERROR 0004
1483UNCHANGED: ;;
1484 POP SI ;; balance push-pop
1485 POP CX ;;
1486 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1487; $ENDSRCH ;; End of scanning printer_desc
1488$$SR1:
1489;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1490 POP DI ;;
1491 INC DI ;;
1492 INC DI ;; points to next device in PART_OT
1493 DEC DX ;;
1494 ;;
1495 JMP NEXT_DID ;;
1496 ;;
1497END_DID : ;;
1498 POP DI ;;
1499BAD_DID : ;;
1500 ;;
1501 MOV AX,DID_STATUS ;;
1502 AND AX,AX ;;
1503 JNZ DEF_BUFFER ;;
1504 ;;
1505 JMP END_LPT ;;
1506 ;;
1507;;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1508;;
1509;; ++++++++++++++++++++++++
1510;; ++ INIT Stage 2 ++
1511;; ++++++++++++++++++++++++
1512;;
1513;; INIT -- SECOND STAGE :
1514;;
1515;; == match the device_name extracted in stage 1 with the name of PRN or
1516;; LPTn
1517;;
1518;; == if the PRN/LPTn has never been defined before, then set up the BUF
1519;; for the PRN/LPTn if the DID_STATUS is good; otherwise message will
1520;; be generated indicating it cannot be initilized.
1521;;
1522;; == if there is PRN, LPT1 is also setup, and vice vera. IF both PRN and
1523;; LPT1 are on the DEVICE command, or there are multiple entries for
1524;; the same LPTn, the consistency is checked. It they are inconsistent
1525;; the associated LPTn or PRN is forced to fail by : DID_FAIL.
1526;;
1527;; == if the device_name on the DEVICE command is not one of the supported
1528;; PRN or LPTn, then DID_MATCH bit will not be set. An error message
1529;; will be generated for the device_name indicating it cannot be
1530;; initialized.
1531;;
1532;; == procedure(s) called : CHK_DID .. check DID parameters for device
1533;; whose name matched.
1534;; DEV_CHECK .. if device-name duplicated, or
1535;; there are both PRN/LPT1 : check
1536;; for consistent parameters.
1537;;
1538;;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1539DEF_BUFFER : ;;
1540 PUSH CS ;;
1541 POP ES ;; PSE points to Device offsets
1542 MOV DI,OFFSET(table) ;; ES:[DI]
1543 xor cx,cx ;; device order in parse table
1544;SEARCH ;;
1545$$DO7:
1546 PUSH DI ;; pointer to PAR_OT
1547 PUSH CX ;; save device count
1548 MOV DI,PSE.PAR_OFF ;; " " PAR_DEVOT
1549 cmp cx,dev_num ;;
1550 ;;
1551;LEAVE NB ;; LEAVE if no more device entry
1552 jb MORE_DEVICE ;;
1553 JMP $$EN7
1554MORE_DEVICE : ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1555 ;; more parsed_device to be checked
1556 PUSH DI ;; save offset to PAR_DEVOT
1557 MOV DI,PSE.PAR_DNMO ;;
1558 MOV CX,PSE.PAR_DNML ;; length of parsed device name
1559 LEA DI,PSE.PAR_DNM ;; pointer to parse device name
1560 ;;
1561 LDS SI,DWORD PTR BUF.DEV_HDRO ; get the offset to device-n header
1562 LEA SI,HP.DH_NAME ;; " offset to name of device-n
1563 REPE CMPSB ;;
1564 POP DI ;; get back offset to PAR_DEVOT
1565 ;;
1566 ;;;;;;;;;;;;;;;;;;;;;;;;;;
1567;EXITIF Z ;; EXIT if name matched
1568 JZ NAME_MATCHED ;;
1569 ;;
1570 JMP MORE_PARSED_DEVICE ;;
1571 ;;
1572NAME_MATCHED : ;;
1573 ;;
1574 POP CX ;; the DID order
1575 PUSH BX ;;
1576 MOV BX,CX ;;
1577 ADD BX,BX ;;
1578 MOV AX,DID_BIT[BX] ;;
1579 OR DID_MATCH,AX ;; this DID matched
1580 POP BX ;;
1581 PUSH CX ;;
1582 ;;
1583 LEA SI,BUF.PAR_EXTRACTO ;; was the LPT1/PRN defined before ?
1584 MOV AX,CS:[SI].PAR_DNMO ;;
1585 CMP AX,0FFFFH ;;
1586 ;;
1587 JNE DEV_COMPARE ;; DI = PAR_DEVOT
1588 ;;-----------------------------------
1589 ;;
1590 ;; no device previousely defined
1591 MOV AX,PSE.PAR_DNMO ;;
1592 MOV CS:[SI].PAR_DNMO,AX ;; define device parameters for LPTn
1593 ;;
1594 MOV AX,PSE.PAR_DIDO ;;
1595 MOV CS:[SI].PAR_DIDO,AX ;;
1596 ;;
1597 MOV AX,PSE.PAR_HWCPO ;;
1598 MOV CS:[SI].PAR_HWCPO,AX ;;
1599 ;;
1600 MOV AX,PSE.PAR_DESGO ;;
1601 MOV CS:[SI].PAR_DESGO,AX ;;
1602 ;;
1603 MOV AX,PSE.PAR_PARMO ;;
1604 MOV CS:[SI].PAR_PARMO,AX ;;
1605 ;;
1606 ;;---------------------------------
1607 CALL CHK_DID ;; define the STATE according to
1608 ;; DID_STATUS
1609 JMP MORE_PARSED_DEVICE ;;
1610 ;;
1611DEV_COMPARE : ;;-------------------------------
1612 ;; e.g. LPT1 and PRN shares one BUF.
1613 ;; or duplicated device name
1614 CALL DEV_CHECK ;;
1615 ;;
1616 CMP BUF.STATE,CPSW ;;
1617 JNE DEV_COMPARE_FAIL ;;
1618 ;;
1619 JMP MORE_PARSED_DEVICE ;;
1620 ;;
1621DEV_COMPARE_FAIL : ;;
1622 ;;
1623 POP CX ;;
1624 POP DI ;; balance push-pop
1625 ;;
1626 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1627;$ORELSE ;;
1628 JMP END_LPT
1629 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1630MORE_PARSED_DEVICE : ;; name does not match
1631 ;;
1632 POP CX ;;
1633 INC CX ;;
1634 POP DI ;;
1635 INC DI ;;
1636 INC DI ;; points to next device in PART_OT
1637 ;;
1638 jmp $$DO7 ;;
1639;$ENDLOOP ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1640$$EN7: ;; no device found for LPTn
1641 ;;
1642 POP CX ;;
1643 POP DI ;; balance push-pop
1644 ;;
1645 CMP BUF.STATE,CPSW ;;
1646 JE END_LPT ;; for LPT1/PRN pair
1647 ;;
1648 MOV BUF.STATE,NORMAL ;; no device defined for the LPTn
1649 ;;
1650 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1651 ;; End of defining LPTn Buffer
1652 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1653;$ENDSRCH ;;
1654END_LPT : ;;
1655 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1656 ;; set the request header status
1657 ;; according to the STATE
1658 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1659 MOV AX, RESIDENT_END ;;
1660 PUSH CS ;;
1661 POP CX ;; CX=CS
1662 SUB AX,Cx ;; additional segment required.
1663CS_LOOP2: ;;
1664 CMP AX,1000H ;;
1665 JB CS_LPEND2 ;;
1666 ADD CX,1000H ;;
1667 SUB AX,1000H ;;
1668 JMP CS_LOOP2 ;;
1669 ;;
1670CS_LPEND2: ;;
1671 SHL AX,1 ;;
1672 SHL AX,1 ;;
1673 SHL AX,1 ;;
1674 SHL AX,1 ;;
1675 ;;
1676 LES DI,dword ptr buf.rh_ptro ;; get Request Header address
1677 MOV RH.RH0_ENDO,AX ;;
1678 MOV RH.RH0_ENDS,CX ;;
1679 XOR AX,AX ;; clear error code to be returned
1680 MOV CX,BUF.STATE ;;
1681 CMP CX,CPSW ;;
1682 JE MATCH_GOOD ;;
1683 MOV AX,STAT_CMDERR ;;
1684 ;;
1685MATCH_GOOD : ;;
1686 MOV RH.RHC_STA,AX ;; set status in request header
1687 ;;
1688BUF_END : ;;
1689 ;;
1690 CMP BUF.BFLAG,BF_LPT1 ;;
1691 JNE BUF_MESSAGES ;;
1692 ;;
1693 CMP BUF.STATE,CPSW ;;
1694 JNE BUF_MESSAGES ;;
1695 ;; set PRN to the same setting as LPT1
1696 PUSH BX ;;
1697 ;;
1698 LEA SI,BUF.RNORMO ;;
1699 LEA CX,BUF.BUFEND ;;
1700 SUB CX,SI ;;
1701 MOV BX,BUF.PRN_BUFO ;; where PRN buffer is
1702 LEA DI,BUF.RNORMO ;;
1703 PUSH CS ;;
1704 POP ES ;;
1705 PUSH CS ;;
1706 POP DS ;;
1707 REP MOVSB ;;
1708 ;;
1709 POP BX ;;
1710 ;;
1711BUF_MESSAGES : ;;
1712 CMP BUF.BFLAG,BF_LPT3 ;; generate error message is this is
1713 je last_round ;; the last LPTn
1714 Jmp INIT_RETURN ;;
1715 ;; ERROR messages will be generated
1716 ;; at the end of initialization of all
1717 ;; the LPT devices
1718last_round : ;;
1719 MOV AX,RESIDENT_END ;;
1720 ADD AX,STACK_SIZE ;;
1721 MOV RESIDENT_END,AX ;;
1722 PUSH CS ;;
1723 POP CX ;; CX=CS
1724 SUB AX,Cx ;; additional segment required.
1725CS_LOOP3: ;;
1726 CMP AX,1000H ;;
1727 JB CS_LPEND3 ;;
1728 ADD CX,1000H ;;
1729 SUB AX,1000H ;;
1730 JMP CS_LOOP3 ;;
1731 ;;
1732CS_LPENd3: ;;
1733 SHL AX,1 ;;
1734 SHL AX,1 ;;
1735 SHL AX,1 ;;
1736 SHL AX,1 ;;
1737 ;;
1738 MOV RH.RH0_ENDO,AX ;; STACK !!!!!
1739 MOV STACK_ALLOCATED,0 ;; from now on, internal stack is used
1740 ;;
1741 MOV AX,DID_STATUS ;; what is the DID combination ?
1742 AND AX,DID_MATCH ;;
1743 XOR AX,DID_FAIL ;;
1744 ;;
1745 AND AX,AX ;;
1746 JNZ CODE_STAYED ;;
1747; MOV RH.RH0_ENDO,0 ;; none of the devices are good
1748 ;;
1749 ;;
1750CODE_STAYED : ;;
1751 MOV DI,OFFSET TABLE ;;
1752 push CS ;;
1753 POP ES ;;
1754 ;;
1755 XOR CX,CX ;;
1756MSG_LOOP : ;;
1757 CMP CX,DEV_NUM ;;
1758 JNB INIT_RETURN ;;
1759 SHR AX,1 ;;
1760 JC MSG_NEXT ;;
1761 ;; this device in parse table is bad
1762 PUSH DI ;;
1763 PUSH CX ;;
1764 PUSH AX ;;
1765 ;;
1766 MOV DI,PSE.PAR_OFF ;;
1767 MOV SI,PSE.PAR_DNMO ;;
1768 ;;
1769 PUSH CS ;;
1770 POP ES ;;
1771 PUSH CS ;;
1772 POP DS ;;
1773 ;;
1774 MOV CX,8 ;;
1775 LEA SI,[SI].PAR_DNM ;;
1776 ;;
1777 MOV DI,SI ;;
1778 ADD DI,7 ;; skip backward the blanks
1779 MOV AL,20H ;;
1780 STD ;;
1781 REPE SCASB ;;
1782 CLD ;;
1783 ;;
1784 MOV DI, OFFSET MSG_NO_INIT_P;;
1785 MOV DX,DI ;; for INT 21H
1786 XOR AX,AX ;;
1787 MOV AH,09H ;;
1788 INT 21H ;;
1789 ;;
1790 ;;
1791 MOV DI, OFFSET MSG_NO_INIT ;;
1792 MOV DX,DI ;; for INT 21H
1793 ;;
1794 INC CX ;;
1795 ;;
1796 PUSH CX ;; remaining name that is non blank
1797 MOV AX,CX ;;
1798 MOV CX,8 ;;
1799 SUB CX,AX ;;
1800 ADD DI,CX ;;
1801 MOV DX,DI ;;
1802 POP CX ;;
1803 REP MOVSB ;;
1804 ;;
1805 ;;
1806 XOR AX,AX ;;
1807 MOV AH,09H ;;
1808 INT 21H ;;
1809 ;;
1810 POP AX ;;
1811 POP CX ;;
1812 POP DI ;;
1813 ;;
1814MSG_NEXT : ;;
1815 INC CX ;;
1816 INC DI ;;
1817 INC DI ;;
1818 JMP MSG_LOOP ;;
1819 ;;
1820 ;;
1821INIT_RETURN : ;;
1822 ;;
1823 ;;
1824 RET ;;
1825 ;;
1826INIT ENDP ;;
1827;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1828;;
1829;; Call by INIT to extract parameters for the deivce_id
1830;;
1831;; on rntry :
1832;; ES:[DI] PARSE Table 2, offsets of all parameters
1833;; DS:[SI] Printer Description table whose TYPEID matched
1834;; DX "inverse" order of devices in the PARSE tables
1835;;
1836;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1837 ;;
1838 ;;
1839DID_EXTRACT PROC ;;
1840 ;;
1841 PUSH DX ;;
1842 ;;-----------------------------
1843 ;; define the DID_parameters
1844 PUSH BX ;;
1845 ;;
1846 MOV BX,DEV_NUM ;;
1847 SUB BX,DX ;; order in the Parse table
1848 add bx,bx ;; double to index [bx]
1849 MOV DX,BX ;;
1850 ;;
1851 MOV AX,DS:[SI].FONTSZ ;;
1852 MOV FSIZE[BX],AX ;; size of font buffer to be created
1853 ;;
1854 MOV AX,DS:[SI].HSLOTS ;;
1855 CMP AX,HARDSL_MAX ;;
1856 JNA LESS_HARDSL ;;
1857 MOV INIT_CHK, 0010H ;; ERROR 0010H
1858 POP BX ;;
1859 JMP END_MATCH_BAD ;;
1860LESS_HARDSL : ;;
1861 CMP AX,DS:[SI].HWCPMIN ;;
1862 JNB VALID_HARDSL ;;
1863 MOV INIT_CHK, 0012H ;; ERROR 0012H
1864 POP BX ;;
1865 JMP END_MATCH_BAD ;;
1866VALID_HARDSL : ;;
1867 MOV HRMAX[BX],AX ;;
1868 MOV CTMAX[BX],AX ;; will be reduced by the no. of hwcp
1869 ;;
1870 MOV AX,DS:[SI].RSLOTS ;;
1871 CMP AX,RAMSL_MAX ;;
1872 JNA LESS_RAMSL ;;
1873 MOV INIT_CHK, 0011H ;; ERROR 0011H
1874 POP BX ;;
1875 JMP END_MATCH_BAD ;;
1876LESS_RAMSL : ;;
1877 MOV RMMAX[BX],AX ;; see also designate
1878 ;;
1879 MOV DESCO[BX],SI ;;
1880 ;;
1881 POP BX ;;
1882 ;;----------------------------------
1883 ;;
1884 PUSH CX ;;
1885 ;;
1886HWCPgt: PUSH DI ;; get the hwcp
1887 ;;
1888 MOV DI,PSE.PAR_HWCPO ;;
1889 MOV CX,PSE.PAR_HWCPL ;; no. of hwcp
1890 AND CX,CX ;;
1891 JNZ chk_hwcp ;;
1892 push bx ;;
1893 mov bx,dx ;;
1894 MOV HRMAX[BX],CX ;;
1895 MOV CX,DS:[SI].HWCPMIN ;;
1896 SUB CTMAX[BX],CX ;; what is left becomes cartridge slot
1897 pop bx ;;
1898 JMP DESIGN ;;
1899 ;; hwcp to be defined
1900chk_hwcp: MOV AX,DS:[SI].HSLOTS ;; defined in printer_desc
1901 CMP CX,AX ;;
1902 JA BAD_MATCH2 ;;
1903 CMP CX,HARDSL_MAX ;;
1904 JNA HWCP_GOOD ;; jump if system error
1905 MOV INIT_CHK,0003H ;; ERROR 0003
1906 JMP END_MATCH ;;
1907BAD_MATCH2: ;;
1908 MOV INIT_CHK,0002H ;; ERROR 0002
1909 JMP END_MATCH ;;
1910 ;;
1911HWCP_GOOD: ;; there are sufficient hard-slot for
1912 ;; HWCP
1913 PUSH SI ;; printer description table of TYPEID
1914 PUSH BX ;;
1915 ;;
1916 MOV BX,DX ;;
1917 MOV AX,CTMAX[BX] ;;
1918 ;;
1919 PUSH CX ;; calculate what is left for cart_slot
1920 CMP CX,DS:[SI].HWCPMIN ;;
1921 JNB MORE_THAN_HWCPMIN ;;
1922 MOV CX,DS:[SI].HWCPMIN ;;
1923MORE_THAN_HWCPMIN : ;;
1924 SUB AX,CX ;;
1925 POP CX ;;
1926 mov HRMAX[BX],CX ;;
1927 ;;
1928 MOV CTMAX[BX],AX ;; no of cart-slot for designate
1929 MOV SI,HARD_SLA[BX] ;; get the corresponding hard-slots
1930 ;;
1931 POP BX ;;
1932 ;;
1933 push bx ;;
1934 push dx ;;
1935 mov bx,si ;;
1936 mov dx,cx ;;
1937 mov reserved1,dx ;; IF THERE IS ANY REPETITIVE HWCP
1938 mov reserved2,bx ;; IF THERE IS ANY REPETITIVE HWCP
1939 ;;
1940FILL_HWCP: ;;
1941 AND CX,CX ;;
1942 JZ DESIGN_P ;;
1943 INC DI ;; next code page in PARSE table
1944 INC DI ;;
1945 MOV AX,ES:[DI] ;; get code page value
1946 ;;
1947 ;; IF THERE IS ANY REPETITIVE HWCP
1948 push dx ;;
1949 push bx ;;
1950hwcp_norep : ;;
1951 cmp ax,cs:[bx].slt_cp ;;
1952 jne hwcp_repnext ;;
1953 pop bx ;;
1954 pop dx ;;
1955 pop dx ;;
1956 pop bx ;;
1957 pop si ;;
1958 jmp end_match ;;
1959 ;;
1960hwcp_repnext: ;;
1961 inc bx ;;
1962 inc bx ;;
1963 inc bx ;;
1964 inc bx ;;
1965 dec dx ;;
1966 jnz hwcp_norep ;;
1967 pop bx ;;
1968 pop dx ;;
1969 ;;
1970 MOV CS:[SI].SLT_CP,AX ;;
1971 MOV AX,CS:[SI].SLT_AT ;; get the attributes
1972 OR AX,AT_OCC ;; occupied
1973 OR AX,AT_HWCP ;; hwcp slot
1974 MOV CS:[SI].SLT_AT,AX ;;
1975 INC SI ;;
1976 INC SI ;; next slot
1977 INC SI ;; next slot
1978 INC SI ;; next slot
1979 DEC CX ;;
1980 JMP FILL_HWCP ;;
1981DESIGN_P: ;;
1982 pop dx ;;
1983 pop bx ;;
1984 POP SI ;;
1985 ;;---------------------
1986DESIGN: POP DI ;; get the designate no.
1987 PUSH DI ;;
1988 ;;
1989 MOV DI,PSE.PAR_DESGO ;;
1990 MOV AX,PSE.PAR_DESGL ;;
1991 CMP AX,1 ;;
1992 JA END_MATCH ;; there should have no font entry
1993 AND AX,AX ;;
1994 JZ DEF_RBUFMAX ;;
1995 ;;
1996 MOV AX,PSE.PAR_DESG ;;
1997 AND AX,AX ;;
1998 JZ DEF_RBUFMAX ;;
1999 ;;
2000 CMP CS:[SI].CLASS,1 ;;
2001 JNE DESIG_NOt_CLASS1 ;;
2002 ;;
2003 PUSH BX ;; if there is any cartridge slot ?
2004 PUSH AX ;;
2005 MOV BX,DX ;;
2006 MOV AX,ctmax[BX] ;;
2007 AND AX,AX ;;
2008 POP AX ;;
2009 POP BX ;;
2010 JZ END_MATCH ;; fail, as there is no physical RAM.
2011 ;;
2012 CMP AX,HARDSL_MAX ;; is the designate more than max ?
2013 JA END_MATCH ;;
2014 ;;
2015 ;;
2016 JMP DEF_RBUFMAX ;;
2017 ;;
2018 ;;
2019 ;;
2020DESIG_NOT_CLASS1 : ;;
2021 PUSH BX ;; if there is any physical RAM slot ?
2022 PUSH AX ;;
2023 MOV BX,DX ;;
2024 MOV AX,RMMAX[BX] ;;
2025 AND AX,AX ;;
2026 POP AX ;;
2027 POP BX ;;
2028 JZ END_MATCH ;; fail, as there is no physical RAM.
2029 ;;
2030 ;;
2031 CMP AX,RAMSL_MAX ;; is the designate more than max ?
2032 JA END_MATCH ;;
2033 ;;
2034DEF_RBUFMAX : ;;
2035 PUSH BX ;;
2036 MOV BX,DX ;;
2037 MOV RBUMAX[BX],AX ;;
2038 POP BX ;;
2039 ;;
2040 ;;
2041PARAM : ;;
2042;PARM: POP DI ;;
2043; PUSH DI ;;
2044;; MOV DI,PSE.PAR_PARMO ;;
2045 ;;
2046 ;,--------------------------
2047 ;; GOOD device_id parameters
2048 shr dx,1 ;;
2049 MOV AX,DID_ONE ;;
2050 MOV CX,DX ;;
2051 AND CX,CX ;;
2052 JZ NO_SHL ;;
2053 SHL AX,CL ;;
2054NO_SHL: OR DID_STATUS,AX ;; is defined
2055 ;;-------------------------
2056END_MATCH: POP DI ;; end of extract
2057 POP CX ;;
2058END_MATCH_BAD : ;;
2059 POP DX ;;
2060 ;;
2061 RET ;;
2062 ;;
2063DID_EXTRACT ENDP ;;
2064 ;;
2065;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2066;;
2067;; Called by INIT to define the STATE and BUF for the LPTn according to
2068;; the DID_STATUS. Create font buffer if requested through the "desi*nate"
2069;;
2070;; at entry : CX = device order in parse table
2071;;
2072;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2073CHK_DID PROC ;;
2074 ;;
2075 push cx ;;
2076 push di ;;
2077 push dx ;;
2078 ;;
2079 MOV AX,DID_STATUS ;;
2080 ;;
2081 PUSH CX ;; order 0 to m
2082 POP DI ;;
2083 ADD DI,DI ;; indexing : [DI]
2084 ;;
2085 INC CX ;;
2086 SHR AX,CL ;; is the device parameter valid ?
2087 ;;
2088 JC DEFINE_BUFFER ;;
2089 JMP LPT_FAIL ;;--------------------------
2090 ;;
2091DEFINE_BUFFER : ;;
2092 ;; good device parameters as determined
2093 MOV AX,DESCO[DI] ;;
2094 MOV BUF.PDESCO,AX ;;
2095 ;;
2096 PUSH DI ;;
2097 MOV DI,AX ;;
2098 MOV AX,CS:[DI].CLASS ;;
2099 MOV BUF.PCLASS,AX ;;
2100 POP DI ;;
2101 ;;
2102 MOV AX,HARD_SLA[DI] ;; in the DID_EXTRACT
2103 MOV BUF.HARDSO,AX ;;
2104 ;;
2105 MOV AX,RAM_SLA[DI] ;;
2106 MOV BUF.RAMSO,AX ;;
2107 ;;
2108 MOV AX,HRMAX[DI] ;;
2109 MOV BUF.HARDMX,AX ;;
2110 ;;
2111 MOV AX,CTMAX[DI] ;;
2112 MOV BUF.HCARMX,AX ;;
2113 ;;
2114 ADD AX,HRMAX[DI] ;; defore "designate"
2115 MOV BUF.HSLMX,AX ;;
2116 ;;
2117 ;;
2118 MOV AX,RMMAX[DI] ;;
2119 MOV BUF.RAMMX,AX ;;
2120 ;;
2121 XOR AX,AX ;;
2122 PUSH CX ;; calculate the max. length of control
2123 MOV CX,2 ;; sequence that is allowed for the
2124 CMP BUF.PCLASS,1 ;; room reserved for physical slots.
2125 JNE CTL_LOOP ;;
2126 MOV CX,1 ;; class 1 printer has one control seq.
2127CTL_LOOP : ;;
2128 ADD AX,CTL_MAX ;;
2129 DEC AX ;; leave one byte for the length
2130 DEC CX ;;
2131 JNZ CTL_LOOP ;;
2132 MOV BUF.FSELMAX,AX ;;
2133 POP CX ;;
2134 ;;
2135 MOV AX,FSIZE[DI] ;;
2136 MOV BUF.FTSZPA,AX ;; FTSIZE in paragraph
2137 ;;
2138 PUSH AX ;;
2139 ;;
2140 MOV DX,4 ;;
2141FT_PARA: ;;
2142 ADD AX,AX ;;
2143 DEC DX ;;
2144 JNZ FT_PARA ;; font size
2145 MOV BUF.FTSIZE,AX ;; font size in bytes (used with.RBUFMX)
2146 ;;
2147 POP DX ;; FTSIZE in paragraph
2148 ;;
2149 MOV CX,RBUMAX[DI] ;; create font buffer per .RBUFMX and
2150 MOV BUF.RBUFMX,CX ;; assume sufficient memory for all the
2151 ;; "designate request"
2152 PUSH CX ;;
2153 ;;
2154 CMP BUF.PCLASS,1 ;; always create font buffer for class1
2155 JNE CLASS_NOT_1 ;;
2156 ;;
2157 AND CX,CX ;;
2158 JZ CLASS1_NOCX ;;
2159 ADD CX,BUF.HARDMX ;;
2160 MOV BUF.HSLMX,CX ;;
2161 JMP CLASS_NOT_1 ;;
2162 ;;
2163CLASS1_NOCX: ;;
2164 MOV CX,BUF.HSLMX ;;
2165 ;;
2166CLASS_NOT_1 : ;;
2167 AND CX,CX ;;
2168 JZ MULTIPLE_DONE ;;
2169 MOV AX,RESIDENT_END ;;
2170MULTIPLE_FT : ;;
2171 ADD AX,DX ;; allocate the font buffers at the end
2172 DEC CX ;; of the resident codes
2173 JNZ MULTIPLE_FT ;;
2174 ;;
2175 ;;
2176 MOV CX,RESIDENT_END ;;
2177 MOV BUF.FTSTART,CX ;;
2178 MOV RESIDENT_END,AX ;;
2179 ;;
2180 ;;
2181MULTIPLE_DONE : ;;
2182 POP CX ;; designate requested
2183 ;;
2184 CMP BUF.PCLASS,1 ;;
2185 JNE DEF_RBUF ;;
2186 ;; CLASS 1
2187 CMP BUF.HARDMX,0 ;;
2188 JE DEFBUF_DONE ;;
2189 ;;
2190 PUSH CX ;; STACKS...
2191 PUSH SI ;;
2192 PUSH DS ;;
2193 PUSH ES ;;
2194 PUSH DI ;;
2195 PUSH DX ;;
2196 ;;
2197 MOV DX,BUF.HARDMX ;;
2198 PUSH DX ;; STACK +1 -- # of HWCP
2199 ;;
2200 PUSH CS ;;
2201 POP DS ;;
2202 MOV BUF.RBUFMX,0 ;;
2203 MOV SI,BUF.PDESCO ;;
2204 MOV SI,CS:[SI].SELH_O ;;
2205 XOR CX,CX ;;
2206 MOV CL,CS:BYTE PTR [SI] ;;
2207 INC CX ;; including the length byte
2208 ;;
2209 MOV DI,BUF.FTSTART ;; control template
2210DEF_FTBUF: ;; fill the font buffer with the
2211 PUSH DI ;;
2212 POP ES ;;
2213 XOR DI,DI ;;
2214 ;;
2215 PUSH CX ;;
2216 PUSH SI ;;
2217 REP MOVSB ;;
2218 POP SI ;;
2219 POP CX ;;
2220 ;;
2221 PUSH ES ;;
2222 POP DI ;;
2223 ADD DI,BUF.FTszpa ;;
2224 DEC DX ;;
2225 JNZ DEF_FTBUF ;;
2226 ;;
2227 POP DX ;; STACK -1
2228 ;;
2229 MOV SI,BUF.HARDSO ;;
2230 MOV DI,BUF.FTSTART ;; define the HWCP values
2231DEF_FThwcp : ;;
2232 PUSH DI ;;
2233 POP ES ;;
2234 MOV DI,CTL5202_OFFS ;; offset to the HWCP words
2235 ;;
2236 MOV AX,CS:[SI].SLT_CP ;;
2237 MOV ES:WORD PTR [DI],AX ;;
2238 ;;
2239 INC SI ;;
2240 INC SI ;;
2241 INC SI ;;
2242 INC SI ;;
2243 ;;
2244 PUSH ES ;;
2245 POP DI ;;
2246 ADD DI,BUF.FTSZPA ;;
2247 DEC DX ;;
2248 JNZ DEF_FThwcp ;;
2249 ;;
2250 POP DX ;;
2251 POP DI ;;
2252 POP ES ;;
2253 POP DS ;;
2254 POP SI ;;
2255 POP CX ;;
2256 ;;
2257 JMP DEFBUF_DONE ;;
2258 ;;
2259 ;;
2260DEF_RBUF : ;;
2261 MOV BUF.RSLMX,CX ;; the no. of ram slots supported
2262 CMP CX,RMMAX[DI] ;;
2263 JNB DEFBUF_DONE ;;
2264 MOV AX,RMMAX[DI] ;;
2265 MOV BUF.RSLMX,AX ;; the max. of .RAMMX and .RBUFMX
2266 ;;
2267DEFBUF_DONE : ;;
2268 MOV BUF.STATE,CPSW ;; the LPTn is CPSW ----- STATE
2269 ;;
2270 CMP BUF.BFLAG,BF_PRN ;;
2271 JNE RET_CHK_DID ;;
2272 MOV AX,DID_BIT[DI] ;;
2273 MOV BUF.DID_PRN,AX ;;
2274 ;;
2275 ;;
2276 JMP RET_CHK_DID ;;
2277 ;;
2278LPT_FAIL: ;;
2279 ;;
2280 MOV BUF.STATE,NORMAL ;; the LPTn is NORMAL --- STATE
2281 ;;
2282 ;;
2283RET_CHK_DID: ;;
2284 ;;
2285 pop dx ;;
2286 pop di ;;
2287 pop cx ;;
2288 ;;
2289 RET ;;
2290 ;;
2291CHK_DID ENDP ;;
2292 ;;
2293;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2294;;
2295;; Called by INIT to check for consistency between duplicated device name and
2296;; between PRN and LPT1
2297;;
2298;; at entry : DI = pointer to PAR_DEVOT
2299;; BUF.STATE = any state
2300;; CX = DID order
2301;;
2302;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2303 ;;
2304DEV_CHECK PROC ;;
2305 ;;
2306 LEA SI,BUF.PAR_EXTRACTO ;;
2307 ;;
2308 PUSH CX ;;
2309 ;;
2310 PUSH SI ;; compare device id
2311 PUSH DI ;;
2312 mov SI,[SI].PAR_DIDO ;;
2313 MOV DI,PSE.PAR_DIDO ;;
2314 MOV CX,PSE.PAR_DNML ;;
2315 INC CX ;; including length
2316 INC CX ;;
2317 REPE CMPSB ;;
2318 POP DI ;;
2319 POP SI ;;
2320 Jz hwcp_check ;;
2321 mov init_chk,0021h ;; error 0021h
2322 Jmp FORCE_LPT_BAD ;;
2323 ;;
2324hwcp_check : ;;
2325 PUSH SI ;; compare HWCP
2326 PUSH DI ;;
2327 mov SI,[SI].PAR_HWCPO ;;
2328 MOV DI,PSE.PAR_HWCPO ;;
2329 MOV AX,PSE.PAR_HWCPL ;;
2330 MOV CX,2 ;;
2331 SHL AX,CL ;; multiply by two
2332 INC AX ;; including length
2333 INC AX ;;
2334 MOV CX,AX ;;
2335 REPE CMPSB ;;
2336 POP DI ;;
2337 POP SI ;;
2338 Jz desig_check ;;
2339 mov init_chk,0022h ;; error 0022h
2340 Jmp FORCE_LPT_BAD ;;
2341 ;;
2342desig_check : ;;
2343 PUSH SI ;; compare DESIGNATE
2344 PUSH DI ;;
2345 mov SI,[SI].PAR_DESGO ;;
2346 MOV DI,PSE.PAR_DESGO ;;
2347 MOV AX,PSE.PAR_DESGL ;;
2348 MOV CX,2 ;;
2349 SHL AX,CL ;; multiply by two
2350 INC AX ;; including length
2351 INC AX ;;
2352 MOV CX,AX ;;
2353 REPE CMPSB ;;
2354 POP DI ;;
2355 POP SI ;;
2356 Jz param_check ;;
2357 mov init_chk,0023h ;; error 0023h
2358 Jmp FORCE_LPT_BAD ;;
2359 ;;
2360param_check : ;;
2361 PUSH SI ;; compare parameters
2362 PUSH DI ;;
2363 mov SI,[SI].PAR_PARMO ;;
2364 MOV DI,PSE.PAR_PARMO ;;
2365 MOV CX,PSE.PAR_PARML ;;
2366 INC CX ;; including length
2367 INC CX ;;
2368 REPE CMPSB ;;
2369 POP DI ;;
2370 POP SI ;;
2371 JZ M_END ;;
2372 mov init_chk,0024h ;; error 0024h
2373 ;;
2374FORCE_LPT_BAD : ;; the second set of parameters is
2375 MOV BUF.STATE,NORMAL ;; bad
2376 ;;
2377 CMP BUF.BFLAG,BF_LPT1 ;;
2378 JNE M_END ;;
2379 ;;
2380 ;; since LPT1 is bad, force PRN to bad
2381 push bx ;; force prn to be bad too
2382 mov bx,buf.prn_bufo ;;
2383 MOV BUF.STATE,NORMAL ;;
2384 pop bx ;;
2385 ;;
2386 mov AX,BUF.DID_PRN ;; if PRN was not good, DID_PRN = 0
2387 OR DID_FAIL,AX ;;
2388 ;;
2389 ;;
2390M_END: ;; force the good did_status to fail if
2391 ;; STATE is bad
2392 POP CX ;;
2393 PUSH CX ;; order 0 to m
2394 MOV AX,DID_STATUS ;;
2395 ;;
2396 INC CX ;;
2397 SHR AX,CL ;;
2398 POP CX ;;
2399 JNC DEV_CHECK_RET ;; already failed
2400 ;;
2401 CMP BUF.STATE,CPSW ;;
2402 JE DEV_CHECK_RET ;;
2403 ;;
2404 PUSH BX ;;
2405 MOV BX,CX ;;
2406 ADD BX,BX ;;
2407 MOV AX,DID_BIT[BX] ;;
2408 OR DID_FAIL,AX ;; force DID to fail
2409 POP BX ;;
2410 ;;
2411 ;;
2412DEV_CHECK_RET : ;;
2413 ;;
2414 RET ;;
2415 ;;
2416 ;;
2417DEV_CHECK ENDP ;;
2418 ;;
2419;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2420 ;;
2421CSEG ENDS
2422 END
HIC SVNT DRACONES