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+        PAGE ,132 ;
+        TITLE MSBIO2 - BIOS
+
+        %OUT    ...MSBIO2.ASM
+
+;==============================================================================
+;REVISION HISTORY:
+;AN000 - New for DOS Version 4.00 - J.K.
+;AC000 - Changed for DOS Version 4.00 - J.K.
+;AN00x - PTM number for DOS Version 4.00 - J.K.
+;==============================================================================
+;AN001; - P1820 New Message SKL file                              10/20/87 J.K.
+;AN002; - P5045 New INT 2fh for Get BDS table vector for EMS      06/06/88 J.K.
+;==============================================================================
+
+ROMSEGMENT      EQU     0F000H
+MODELBYTE       EQU     DS:BYTE PTR [0FFFEH]
+MODELPCJR       EQU     0FDH
+
+        itest=0
+
+        INCLUDE MSGROUP.INC     ;DEFINE CODE SEGMENT
+        INCLUDE MSEQU.INC
+        INCLUDE DEVSYM.INC
+        INCLUDE PUSHPOP.INC
+        INCLUDE MSMACRO.INC
+
+        ASSUME  DS:NOTHING,ES:NOTHING
+
+        EXTRN   DSK$IN:NEAR
+        EXTRN   SETPTRSAV:NEAR
+        EXTRN   OUTCHR:NEAR
+        EXTRN   SETDRIVE:NEAR
+        EXTRN   FLUSH:NEAR
+        EXTRN   HARDERR:NEAR
+        EXTRN   HARDERR2:NEAR
+        EXTRN   MAPERROR:NEAR
+        EXTRN   GETBP:NEAR
+        EXTRN   CHECKSINGLE:NEAR
+        EXTRN   CHECK_TIME_OF_ACCESS:NEAR
+        EXTRN   EXIT:NEAR
+        EXTRN   HAS1:NEAR
+        EXTRN   READ_SECTOR:NEAR
+        EXTRN   INT_2F_13:FAR
+
+        EXTRN   OLD13:DWORD
+
+;DATA
+        EXTRN   PTRSAV:DWORD            ;IBMBIO1
+        EXTRN   START_BDS:WORD
+        EXTRN   FDRIVE1:WORD
+        EXTRN   FDRIVE2:WORD
+        EXTRN   FDRIVE3:WORD
+        EXTRN   FDRIVE4:WORD
+        EXTRN   FLAGBITS:WORD
+        EXTRN   TIM_DRV:BYTE
+        EXTRN   MEDBYT:BYTE
+        EXTRN   DRVMAX:BYTE
+        extrn   Ext_Boot_Sig:byte               ;AN000; ibmbdata
+        extrn   SecPerClusInSector:byte         ;AN000; ibmbdata
+        extrn   Boot_Serial_L:word              ;AN000; ibmbdata
+        extrn   Boot_Serial_H:word              ;AN000; ibmbdata
+
+        PATHSTART 005,DISK
+        EVENB
+        public  Model_Byte
+MODEL_BYTE DB   0FFH                    ; MODEL BYTE. SET UP AT INIT TIME.
+                                        ; FF - PC1
+                                        ; FE - XT (64/256K PLANAR)
+                                        ; FD - PC-JR
+                                        ; FC - PC/AT
+        public  Secondary_Model_Byte
+Secondary_Model_Byte db 0
+
+        PUBLIC  ORIG19
+ORIG19  DD      ?
+
+        PUBLIC  INT19SEM
+INT19SEM DB     0                       ; INDICATE THAT ALL INT 19
+                                        ; INITIALIZATION IS COMPLETE
+
+        IRP     AA,<02,08,09,0A,0B,0C,0D,0E,70,72,73,74,76,77>
+        public  Int19OLD&AA
+Int19OLD&AA     dd      -1              ;Orignal hardware int. vectors for INT 19h.
+        ENDM
+
+        EVENB
+        PUBLIC  DSKDRVS
+DSKDRVS DW      FDRIVE1
+        DW      FDRIVE2
+        DW      FDRIVE3
+        DW      FDRIVE4
+        PUBLIC  HDSKTAB
+HDSKTAB DW      HDRIVE
+        DW      DRIVEX
+;* Next area is reseved for mini disk BPB pointers *** J.K. 4/7/86
+;* Don't change this position. Should be addressible from DskDrvs *** J.K. 4/7/86
+MINI_DISK_BPB_PTRS DB 40 dup (?)   ;J.K. 4/7/86 - memory reserved for Mini disk.
+
+        EVENB
+        PUBLIC  INT_2F_NEXT
+INT_2F_NEXT DD     ?
+
+RET_ADDR    DD     ?
+
+        PATHEND 005,DISK
+; = = = = = = = = = = = = = = = = = = = =
+
+;  INT19
+;
+;       WE "HOOK" THE INT 19 VECTOR, BECAUSE CONTRARY TO IBM DOCUMENTATION,
+;  IT DOES NOT "BOOTSTRAP" THE MACHINE.  IT LEAVES MEMORY ALMOST UNTOUCHED.
+;  SINCE THE BIOS_INIT CODE ASSUMES THAT CERTAIN INTERRUPT VECTORS POINT TO
+;  THE ROM_BIOS  WE MUST "UNHOOK" THEM BEFORE ISSUING THE ACTUAL INT_19.
+;  CURRENTLY THE ONLY VECTORS THAT NEED TO BE UNHOOKED ARE INT_19, INT_13,
+;  AND THE HARDWARE INTERRUPTS.
+;
+        PUBLIC  INT19
+INT19   PROC    FAR
+        XOR     AX,AX
+        MOV     DS,AX
+        assume  ds:nothing
+        assume  es:nothing
+
+        LES     DI,OLD13
+        MOV     DS:[13H*4],DI
+        MOV     DS:[13H*4+2],ES
+
+        CMP     BYTE PTR INT19SEM, 0
+        JNZ     INT19VECS
+        JMP     DOINT19
+
+;       ON THE PCJR, DON'T REPLACE ANY VECTORS
+;       MODEL BYTE DEFINITIONS FROM IBMSTACK.ASM
+        MOV     AX,ROMSEGMENT
+        MOV     DS,AX
+        MOV     AL,MODELPCJR
+
+        CMP     AL,MODELBYTE
+        JNE     INT19VECS
+        JMP     DOINT19
+
+;Stacks code has changed these hardware interrupt vectors
+;STKINIT in SYSINIT1 will initialzie Int19hOLDxx values.
+INT19VECS:
+        XOR     AX,AX
+        MOV     DS,AX
+
+        IRP     AA,<02,08,09,0A,0B,0C,0D,0E,70,72,73,74,76,77>
+
+        LES     DI,Int19OLD&AA
+;SB33103******************************************************************
+
+        mov     ax,es           ;
+        cmp     ax,-1           ;OPT 0ffffh is unlikely segment
+        je      skip_int&AA     ;OPT no need to check selector too 
+        cmp     di,-1           ;OPT 0ffffh is unlikely offset
+        je      skip_int&AA
+
+;SB33103******************************************************************
+        MOV     DS:[AA&H*4],DI
+        MOV     DS:[AA&H*4+2],ES
+skip_int&AA:
+        ENDM
+
+DOINT19:
+        LES     DI,ORIG19
+        MOV     DS:[19H*4],DI
+        MOV     DS:[19H*4+2],ES
+
+        INT     19H
+INT19   ENDP
+
+        ASSUME  DS:CODE
+        PUBLIC  DSK$INIT
+DSK$INIT PROC   NEAR
+        PUSH    CS
+        POP     DS
+        MOV     AH,BYTE PTR DRVMAX
+        MOV     DI,OFFSET DSKDRVS
+        JMP     SETPTRSAV
+DSK$INIT ENDP
+
+;
+; INT 2F HANDLER FOR EXTERNAL BLOCK DRIVERS TO COMMUNICATE WITH THE INTERNAL
+; BLOCK DRIVER IN IBMDISK. THE MULTIPLEX NUMBER CHOSEN IS 8. THE HANDLER
+; SETS UP THE POINTER TO THE REQUEST PACKET IN [PTRSAV] AND THEN JUMPS TO
+; DSK$IN, THE ENTRY POINT FOR ALL DISK REQUESTS.
+; ON EXIT FROM THIS DRIVER (AT EXIT), WE WILL RETURN TO THE EXTERNAL DRIVER
+; THAT ISSUED THIS INT 2F, AND CAN THEN REMOVE THE FLAGS FROM THE STACK.
+; THIS SCHEME ALLOWS US TO HAVE A SMALL EXTERNAL DEVICE DRIVER, AND MAKES
+; THE MAINTAINANCE OF THE VARIOUS DRIVERS (DRIVER AND IBMBIO) MUCH EASIER,
+; SINCE WE ONLY NEED TO MAKE CHANGES IN ONE PLACE (MOST OF THE TIME).
+;
+; 06/03/88 J.K. When AL=3, return DS:DI -> Start of BDS table.
+;          (EMS device driver hooks INT 13h to handle 16KB DMA overrun
+;           problem.  BDS table is going to be used to get head/sector
+;           informations without calling Generic IOCTL Get Device Parm call.)
+;
+; AL CONTAINS THE INT2F FUNCTION:
+;   0 - CHECK FOR INSTALLED HANDLER - RESERVED
+;   1 - INSTALL THE BDS INTO THE LINKED LIST
+;   2 - DOS REQUEST
+;   3 - Get BDS vector                          ;06/03/88 J.K.
+;       Return BDS table starting pointer in DS:DI
+
+MYNUM   EQU     8
+
+        PUBLIC  INT2F_DISK
+INT2F_DISK PROC FAR
+        CMP     AH,MYNUM
+        JE      MINE
+        JMP     CS:[INT_2F_NEXT]        ; CHAIN TO NEXT INT 2F HANDLER
+MINE:
+        CMP     AL,0F8H                 ; IRET ON RESERVED FUNCTIONS
+        JB      DO_FUNC
+        IRET
+DO_FUNC:
+        OR      AL,AL                   ; A GET INSTALLED STATE REQUEST?
+        JNE     DISP_FUNC
+        MOV     AL,0FFH
+        IRET
+DISP_FUNC:
+        MESSAGE FTESTINIT,<"INT2F_DISK",CR,LF>
+        CMP     AL,1                    ; REQUEST FOR INSTALLING BDS?
+        JNE     DO_DOS_REQ
+        CALL    INSTALL_BDS
+        IRET
+
+DO_DOS_REQ:
+; SET UP POINTER TO REQUEST PACKET
+        cmp     al, 3                   ;AN002; Get BDS vector?
+        je      DO_Get_BDS_Vector       ;AN002;
+        MOV     WORD PTR CS:[PTRSAV],BX ;othrwise DOS function.
+        MOV     WORD PTR CS:[PTRSAV+2],ES
+        JMP     DSK$IN
+
+DO_Get_BDS_Vector:                      ;AN002; AL=3
+        push    cs                      ;AN002;
+        pop     ds                      ;AN002;
+        mov     di, Start_BDS           ;AN002;
+        IRET                            ;AN002;
+
+INT2F_DISK ENDP
+
+;
+; INSTALL_BDS INSTALLS A BDS A LOCATION DS:DI INTO THE CURRENT LINKED LIST OF
+; BDS MAINTAINED BY THIS DEVICE DRIVER. IT PLACES THE BDS AT THE END OF THE
+; LIST.
+        PUBLIC  INSTALL_BDS
+INSTALL_BDS PROC NEAR
+        MESSAGE FTESTINIT,<"INSTALL BDS",CR,LF>
+; DS:DI POINT TO BDS TO BE INSTALLED
+        LES     SI,DWORD PTR CS:[START_BDS] ; START AT BEGINNING OF LIST
+        PUSH    ES                      ; SAVE POINTER TO CURRENT BDS
+        PUSH    SI
+; ES:SI NOW POINT TO BDS IN LINKED LIST
+LOOP_NEXT_BDS:
+        CMP     SI,-1                   ; GOT TO END OF LINKED LIST?
+        JZ      INSTALL_RET
+; IF WE HAVE SEVERAL LOGICAL DRIVES USING THE SAME PHYSICAL DRIVE, WE MUST
+; SET THE I_AM_MULT FLAG IN EACH OF THE APPROPRIATE BDSS.
+        MOV     AL,BYTE PTR DS:[DI].DRIVENUM
+        CMP     BYTE PTR ES:[SI].DRIVENUM,AL
+        JNZ     NEXT_BDS
+        MESSAGE FTESTINIT,<"LOGICAL DRIVES",CR,LF>
+        XOR     BX,BX
+        MOV     BL,FI_AM_MULT
+        OR      WORD PTR DS:[DI].FLAGS,BX ; SET FLAGS IN BOTH BDSS CONCERNED
+        OR      WORD PTR ES:[SI].FLAGS,BX
+        MOV     BL,FI_OWN_PHYSICAL
+        XOR     BX,-1
+        AND     WORD PTR DS:[DI].FLAGS,BX ; RESET THAT FLAG FOR 'NEW' BDS
+; WE MUST ALSO SET THE FCHANGELINE BIT CORRECTLY.
+        MOV     BX,WORD PTR ES:[SI].FLAGS ; DETERMINE IF CHANGELINE AVAILABLE
+        AND     BL,FCHANGELINE
+        XOR     BH,BH
+        OR      WORD PTR DS:[DI].FLAGS,BX
+
+NEXT_BDS:
+; BEFORE MOVING TO NEXT BDS, PRESERVE POINTER TO CURRENT ONE. THIS IS NEEDED AT
+; THE END WHEN THE NEW BDS IS LINKED INTO THE LIST.
+        POP     BX                      ; DISCARD PREVIOUS POINTER TO BDS
+        POP     BX
+        PUSH    ES
+        PUSH    SI
+        MOV     BX,WORD PTR ES:[SI].LINK + 2
+        MOV     SI,WORD PTR ES:[SI].LINK
+        MOV     ES,BX
+        JMP     SHORT LOOP_NEXT_BDS
+
+INSTALL_RET:
+        POP     SI                      ; RETRIEVE POINTER TO LAST BDS
+        POP     ES                      ; IN LINKED LIST.
+        MOV     AX,DS
+        MOV     WORD PTR ES:[SI].LINK+2,AX ; INSTALL BDS
+        MOV     WORD PTR ES:[SI].LINK,DI
+        MOV     WORD PTR DS:[DI].LINK,-1 ; SET NEXT POINTER TO NULL
+        RET
+INSTALL_BDS ENDP
+
+;
+; RE_INIT INSTALLS THE INT 2F VECTOR THAT WILL HANDLE COMMUNICATION BETWEEN
+; EXTERNAL BLOCK DRIVERS AND THE INTERNAL DRIVER. IT ALSO INSTALLS THE
+; RESET_INT_13 INTERFACE.  IT IS CALLED BY SYSYINIT
+;
+        PUBLIC  RE_INIT
+RE_INIT PROC    FAR
+        MESSAGE FTESTINIT,<"REINIT",CR,LF>
+        PUSH    AX
+        PUSH    DS
+        PUSH    DI
+        XOR     DI,DI
+        MOV     DS,DI
+        MOV     DI,2FH*4                ; POINT IT TO INT 2F VECTOR
+        MOV     AX,WORD PTR DS:[DI]
+        MOV     WORD PTR CS:[INT_2F_NEXT],AX
+        MOV     AX,WORD PTR DS:[DI+2]   ; PRESERVE OLD INT 2F VECTOR
+        MOV     WORD PTR CS:[INT_2F_NEXT+2],AX
+
+; INSTALL THE RESET_INT_13
+; INTERFACE
+
+;
+; THE FOLLOWING TWO LINES ARE NOT NEEDED ANYMORE BECAUSE THE LINK HAS BEEN
+; HARD-WIRED INTO THE CODE AT NEXT2F_13. - RAJEN.
+;------------------------------------------------------------------------------
+;        MOV     WORD PTR CS:[NEXT2F_13],OFFSET INT2F_DISK ; PRESERVE INT2F_DISK POINTER
+;        MOV     WORD PTR CS:[NEXT2F_13+2],CS
+;------------------------------------------------------------------------------
+
+        CLI
+        MOV     WORD PTR DS:[DI],OFFSET INT_2F_13 ; INSTALL NEW VECTORS
+        MOV     WORD PTR DS:[DI+2],CS
+        STI
+        POP     DI
+        POP     DS
+        POP     AX
+
+        RET
+
+RE_INIT ENDP
+
+;-------------------------------------------------
+;
+;  ASK TO SWAP THE DISK IN DRIVE A:
+;
+        PUBLIC  SWPDSK
+SWPDSK  PROC    NEAR
+        MOV     AL,BYTE PTR DS:[DI].DRIVELET ; GET THE DRIVE LETTER
+;USING A DIFFERENT DRIVE IN A ONE DRIVE SYSTEM SO REQUEST THE USER CHANGE DISKS
+        ADD     AL,"A"
+        MOV     CS:DRVLET,AL
+        PUSH    DS                      ; PRESERVE SEGMENT REGISTER
+        PUSH    CS
+        POP     DS
+        MOV     SI,OFFSET SNGMSG        ; DS:SI -> MESSAGE
+        PUSH    BX
+        CALL    WRMSG                   ;PRINT DISK CHANGE MESSAGE
+        CALL    FLUSH
+;SB33003***************************************************************
+        xor     AH, AH                  ; set command to read character;SB
+        int     16h                     ; call rom-bios                ;SB
+;SB33003***************************************************************
+        POP     BX
+        POP     DS                      ; RESTORE SEGMENT REGISTER
+WRMRET:
+        RET
+SWPDSK  ENDP
+
+;----------------------------------------------
+;
+;       WRITE OUT MESSAGE POINTED TO BY [SI]
+;
+        PUBLIC  WRMSG
+WRMSG   PROC    NEAR
+        LODSB                           ;GET THE NEXT CHARACTER OF THE MESSAGE
+        OR      AL,AL                   ;SEE IF END OF MESSAGE
+        JZ      WRMRET
+;       INT     CHROUT
+        PUSHF
+        PUSH    CS
+        CALL    OUTCHR
+        JMP     SHORT WRMSG
+WRMSG   ENDP
+
+;        INCLUDE BIOMES.INC
+         include MSBIO.CL2
+
+;
+; END OF SUPPORT FOR MULTIPLE FLOPPIES WITH NO LOGICAL DRIVES
+; THIS IS NOT 'SPECIAL' ANY MORE BECAUSE WE NOW HAVE THE CAPABILITY OF
+; DEFINING LOGICAL DRIVES IN CONFIG.SYS. WE THEREFORE KEEP THE CODE FOR
+; SWAPPING RESIDENT ALL THE TIME.
+;
+
+;J.K. 10/1/86 *******************************************************
+;Variables for Dynamic Relocatable modules
+;These should be stay resident.
+
+        public  INT6C_RET_ADDR
+INT6C_RET_ADDR  DD      ?               ; return address from INT 6C for P12 machine
+
+        PATHSTART 001,CLK
+;
+;   DATA STRUCTURES FOR REAL-TIME DATE AND TIME
+;
+        public  BIN_DATE_TIME
+        public  MONTH_TABLE
+        public  DAYCNT2
+        public  FEB29
+BIN_DATE_TIME:
+        DB      0               ; CENTURY (19 OR 20) OR HOURS (0-23)
+        DB      0               ; YEAR IN CENTURY (0...99) OR MINUTES (0-59)
+        DB      0               ; MONTH IN YEAR (1...12) OR SECONDS (0-59)
+        DB      0               ; DAY IN MONTH (1...31)
+MONTH_TABLE:                    ;
+        DW      0               ;MJB002 JANUARY
+        DW      31              ;MJB002 FEBRUARY
+        DW      59              ;MJB002
+        DW      90              ;MJB002
+        DW      120             ;MJB002
+        DW      151             ;MJB002
+        DW      181             ;MJB002
+        DW      212             ;MJB002
+        DW      243             ;MJB002
+        DW      273             ;MJB002
+        DW      304             ;MJB002
+        DW      334             ;MJB002 DECEMBER
+DAYCNT2 DW      0000            ;MJB002 TEMP FOR COUNT OF DAYS SINCE 1-1-80
+FEB29   DB      0               ;MJB002 FEBRUARY 29 IN A LEAP YEAR FLAG
+        PATHEND 001,CLK
+
+;********************************************************************
+;
+
+        PUBLIC  ENDFLOPPY
+ENDFLOPPY LABEL BYTE
+;
+; END OF CODE FOR VIRTUAL FLOPPY DRIVES
+;
+        PUBLIC  ENDSWAP
+ENDSWAP LABEL   BYTE
+
+        PATHSTART 004,BIO
+
+        PUBLIC  HNUM
+HNUM    DB      0                       ;NUMBER OF HARDFILES
+        PUBLIC  HARDDRV
+HARDDRV DB      80H                     ;PHYSICAL DRIVE NUMBER OF FIRST HARDFILE
+;**********************************************************************
+;       "HDRIVE" IS A HARD DISK WITH 512 BYTE SECTORS
+;*********************************************************************
+        EVENB
+        PUBLIC  BDSH
+BDSH    DW      -1                      ;LINK TO NEXT STRUCTURE
+        DW      CODE
+        DB      80                      ;INT 13 DRIVE NUMBER
+        DB      "C"                     ;LOGICAL DRIVE LETTER
+        PUBLIC  HDRIVE
+HDRIVE:
+        DW      512
+        DB      1                       ;SECTORS/ALLOCATION UNIT
+        DW      1                       ;RESERVED SECTORS FOR DOS
+        DB      2                       ;NO. OF ALLOCATION TABLES
+        DW      16                      ;NUMBER OF DIRECTORY ENTRIES
+        DW      0000                    ;NUMBER OF SECTORS (AT 512 BYTES EACH)
+        DB      11111000B               ;MEDIA DESCRIPTOR
+        DW      1                       ;NUMBER OF FAT SECTORS
+        DW      00                      ;SECTOR LIMIT
+        DW      00                      ;HEAD LIMIT
+        DW      00                      ;HIDDEN SECTOR COUNT(low)
+        dw      00                      ;AN000;  Hidden Sector (high)
+        dw      00                      ;AN000;  Number of Sectors (low)
+        dw      00                      ;AN000;  Number of Sectors (high)
+        DB      0                       ; TRUE => BIGFAT
+OPCNTH  DW      0                       ;OPEN REF. COUNT
+        DB      3                       ;FORM FACTOR
+FLAGSH  DW      0020H                   ;VARIOUS FLAGS
+;       DB      9 DUP (0)               ;RESERVED FOR FUTURE USE
+        DW      40                      ; NUMBER OF CYLINDERS
+RECBPBH DB      31 DUP (?)              ; RECOMMENDED BPB FOR DRIVE
+TRACKH  DB      -1                      ;LAST TRACK ACCESSED ON THIS DRIVE
+TIM_LOH DW      -1                      ;KEEP THESE TWO CONTIGUOUS (?)
+TIM_HIH DW      -1
+VOLIDH  DB      "NO NAME    ",0         ;AN000; VOLUME ID FOR THIS DISK
+VolSerH dd      0             ;AN000; Current volume serial number from Boot record
+SysIDH  db      "FAT12   " ,0 ;AN000; Current file system id from Boot record
+
+;
+; END OF SINGLE HARD DISK SECTION
+;
+        PUBLIC  ENDONEHARD
+ENDONEHARD LABEL BYTE
+;**********************************************************************
+;       "DRIVEX " IS AN EXTRA TYPE OF DRIVE USUALLY RESERVED FOR AN
+;       ADDITIONAL HARD FILE
+;*********************************************************************
+        EVENB
+        PUBLIC  BDSX
+BDSX    DW      -1                      ;LINK TO NEXT STRUCTURE
+        DW      CODE
+        DB      81                      ;INT 13 DRIVE NUMBER
+        DB      "D"                     ;LOGICAL DRIVE LETTER
+        PUBLIC  DRIVEX
+DRIVEX:
+        DW      512
+        DB      00                      ;SECTORS/ALLOCATION UNIT
+        DW      1                       ;RESERVED SECTORS FOR DOS
+        DB      2                       ;NO. OF ALLOCATION TABLES
+        DW      0000                    ;NUMBER OF DIRECTORY ENTRIES
+        DW      0000                    ;NUMBER OF SECTORS (AT 512 BYTES EACH)
+        DB      11111000B               ;MEDIA DESCRIPTOR
+        DW      0000                    ;NUMBER OF FAT SECTORS
+        DW      00                      ;SECTOR LIMIT
+        DW      00                      ;HEAD LIMIT
+        DW      00                      ;HIDDEN SECTOR COUNT (low)
+        dw      00                      ;AN000;  Hidden Sector (high)
+        dw      00                      ;AN000;  Number of Sectors (low)
+        dw      00                      ;AN000;  Number of Sectors (high)
+        DB      0                       ; TRUE => BIGFAT
+OPCNTD  DW      0                       ;OPEN REF. COUNT
+        DB      3                       ;FORM FACTOR
+FLAGSD  DW      0020H                   ;VARIOUS FLAGS
+;       DB      9 DUP (0)               ;RESERVED FOR FUTURE USE
+        DW      40                      ; NUMBER OF CYLINDERS
+RECBPBD DB      31 DUP (?)              ; RECOMMENDED BPB FOR DRIVE
+TRACKD  DB      -1                      ;LAST TRACK ACCESSED ON THIS DRIVE
+TIM_LOD DW      -1                      ;KEEP THESE TWO CONTIGUOUS (?)
+TIM_HID DW      -1
+VOLIDD  DB      "NO NAME    ",0         ;AN000; VOLUME ID FOR THIS DISK
+VolSerD dd      0             ;AN000; Current volume serial number from Boot record
+SysIDD  db      "FAT12   " ,0 ;AN000; Current file system id from Boot record
+
+;
+; END OF SECTION FOR TWO HARD DISKS
+        PUBLIC  ENDTWOHARD
+ENDTWOHARD LABEL BYTE
+
+        PATHEND 004,BIO
+
+        PUBLIC  TWOHARD
+TWOHARD LABEL   BYTE
+        PAGE
+        INCLUDE MS96TPI.INC
+
+;*********************************************************************
+;Memory allocation for BDSM table. - J.K. 2/21/86
+;*********************************************************************
+        PUBLIC BDSMs
+BDSMs   BDSM_type Max_mini_dsk_num dup (<>)     ;currently max. 23
+
+;** End_of_BDSM defined in IBMINIT.ASM will be used to set the appropriate
+;** ending address of BDSM table.
+
+;
+;;3.3 BUG FIX -SP ------------------------------
+;;Migrated into 4.00 -MRW
+;Paragraph buffer between the BDSMs and MSHARD
+;
+;The relocation code for MSHARD needs this. this cannot be used for 
+;anything. nothing can come before this or after this.....IMPORTANT!!!!
+;don't get too smart and using this buffer for anything!!!!!!
+;
+        db      16 dup(0)
+;
+;end of bug fix buffer
+;;
+;;3.3 BUG FIX -SP------------------------------
+
+CODE    ENDS
+        END