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; SCCSID = @(#)msconst.asm 1.4 85/09/12
; Revision history
; AN000 version 4.00 Jan. 1988
; AN007 fake version check for IBMCACHE.COM
include mshead.asm
include version.inc
CODE SEGMENT BYTE PUBLIC 'CODE'
Extrn LeaveDOS:NEAR
Extrn BadCall:FAR, OKCall:FAR
CODE ENDS
Break <Initialized data and data used at DOS initialization>
;
; We need to identify the parts of the data area that are relevant to tasks
; and those that are relevant to the system as a whole. Under 3.0, the system
; data will be gathered with the system code. The process data under 2.x will
; be available for swapping and under 3.0 it will be allocated per-process.
;
; The data that is system data will be identified by [SYSTEM] in the comments
; describing that data item.
;
AsmVars <Kanji, Debug, Redirector, ShareF>
CONSTANTS SEGMENT WORD PUBLIC 'CONST'
extrn sfTabl:DWORD
ORG 0
EVEN
;
; WANGO!!! The following word is used by SHARE and REDIR to determin data
; area compatability. This location must be incremented EACH TIME the data
; area here gets mucked with.
;
; Also, do NOT change this position relative to DOSGROUP:0.
;
Public MSCT001S,MSCT001E
MSCT001S:
I_am DataVersion,WORD,<1> ;AC000; [SYSTEM] version number for DOS DATA
%out WARNING!!! Debug fields are being included!!!
DB "BUG " ; THIS FIELD MUST BE EVEN # OF BYTES
I_am BugTyp,WORD,<0>
I_am BugLev,WORD,<0>
include bugtyp.asm
I_am MYNUM,WORD,<0> ; [SYSTEM] A number that goes with MYNAME
I_am FCBLRU,WORD,<0> ; [SYSTEM] LRU count for FCB cache
I_am OpenLRU,WORD,<0> ; [SYSTEM] LRU count for FCB cache opens
; NOTE: We include the decl of OEM_HANDLER in IBM DOS even though it is not used.
; This allows the REDIRector to work on either IBM or MS-DOS.
PUBLIC OEM_HANDLER
OEM_HANDLER DD -1 ; [SYSTEM] Pointer to OEM handler code
I_am LeaveAddr,WORD,<<OFFSET DOSGroup:LeaveDOS>> ; [SYSTEM]
I_am RetryCount,WORD,<3> ; [SYSTEM] Share retries
I_am RetryLoop,WORD,<1> ; [SYSTEM] Share retries
I_am LastBuffer,DWORD,<-1,-1>; [SYSTEM] Buffer queue recency pointer
I_am CONTPOS,WORD ; [SYSTEM] location in buffer of next read
I_am arena_head,WORD ; [SYSTEM] Segment # of first arena in memory
; The following block of data is used by SYSINIT. Do not change the order or
; size of this block
PUBLIC SYSINITVAR ; [SYSTEM]
SYSINITVAR LABEL WORD ; [SYSTEM]
I_am DPBHEAD,DWORD ; [SYSTEM] Pointer to head of DPB-FAT list
I_am sft_addr,DWORD,<<OFFSET DosGroup:sfTabl>,?> ; [SYSTEM] Pointer to first SFT table
I_am BCLOCK,DWORD ; [SYSTEM] The CLOCK device
I_am BCON,DWORD ; [SYSTEM] Console device entry points
I_am MAXSEC,WORD,<128> ; [SYSTEM] Maximum allowed sector size
I_am BUFFHEAD,DWORD ; [SYSTEM] Pointer to head of buffer queue
I_am CDSADDR,DWORD ; [SYSTEM] Pointer to curdir structure table
I_am sftFCB,DWORD ; [SYSTEM] pointer to FCB cache table
I_am KeepCount,WORD ; [SYSTEM] count of FCB opens to keep
I_am NUMIO,BYTE ; [SYSTEM] Number of disk tables
I_am CDSCOUNT,BYTE ; [SYSTEM] Number of CDS structures in above
; A fake header for the NUL device
I_am NULDEV,DWORD ; [SYSTEM] Link to rest of device list
DW DEVTYP OR ISNULL ; [SYSTEM] Null device attributes
short_addr SNULDEV ; [SYSTEM] Strategy entry point
short_addr INULDEV ; [SYSTEM] Interrupt entry point
DB "NUL " ; [SYSTEM] Name of null device
I_am Splices,BYTE,<0> ; [SYSTEM] TRUE => splices being done
I_am Special_Entries,WORD,<0>; [SYSTEM] address of specail entries ;AN000;
I_am IFS_DOS_CALL,DWORD ; [SYSTEM] entry for IFS DOS service ;AN000;
I_am IFS_HEADER,DWORD ; [SYSTEM] IFS header chain ;AN000;
I_am BUFFERS_PARM1,WORD,<0> ; [SYSTEM] value of BUFFERS= ,m ;AN000;
I_am BUFFERS_PARM2,WORD,<0> ; [SYSTEM] value of BUFFERS= ,n ;AN000;
I_am BOOTDRIVE,BYTE ; [SYSTEM] the boot drive ;AN000;
I_am DDMOVE,BYTE,<0> ; [SYSTEM] 1 if we need DWORD move ;AN000;
I_am EXT_MEM_SIZE,WORD,<0> ; [SYSTEM] extended memory size ;AN000;
PUBLIC HASHINITVAR ; [SYSTEM] ;AN000;
HASHINITVAR LABEL WORD ; [SYSTEM] ;AN000;
I_am BUF_HASH_PTR,DWORD ; [SYSTEM] buffer Hash table addr ;AN000;
I_am BUF_HASH_COUNT,WORD,<1> ; [SYSTEM] number of Hash entries ;AN000;
I_am SC_CACHE_PTR,DWORD ; [SYSTEM] secondary cache pointer ;AN000;
I_am SC_CACHE_COUNT,WORD,<0> ; [SYSTEM] secondary cache count ;AN000;
IF BUFFERFLAG
I_am BUF_EMS_SAFE_FLAG,BYTE,<1> ; indicates whether the page used by buffers is safe or not
I_am BUF_EMS_LAST_PAGE,4,<0,0,0,0> ; holds the last page above 640k
I_am BUF_EMS_FIRST_PAGE,4,<0,0,0,0> ; holds the first page above 640K
I_am BUF_EMS_NPA640,WORD,<0> ; holds the number of pages above 640K
ENDIF
I_am BUF_EMS_MODE,BYTE,<-1> ; [SYSTEM] EMS mode ;AN000;
I_am BUF_EMS_HANDLE,WORD ; [SYSTEM] buffer EMS handle ;AN000;
I_am BUF_EMS_PAGE_FRAME,WORD ,<-1>;[SYSTEM] EMS page frame number ;AN000;
I_am BUF_EMS_SEG_CNT,WORD,<1>; [SYSTEM] EMS seg count ;AN000;
I_am BUF_EMS_PFRAME,WORD ; [SYSTEM] EMS page frame seg address ;AN000;
I_am BUF_EMS_RESERV,WORD,<0> ; [SYSTEM] reserved ;AN000;
IF BUFFERFLAG
I_am BUF_EMS_MAP_BUFF,1,<0> ; this is not used to save the state of the
; of the buffers page. this one byte is
; retained to keep the size of this data
; block the same.
ELSE
I_am BUF_EMS_MAP_BUFF,12,<0,0,0,0,0,0,0,0,0,0,0,0> ; map buufer ;AN000;
ENDIF
; End of SYSINITVar block
;
; Sharer jump table
;
PUBLIC JShare
EVEN
JShare LABEL DWORD
DW OFFSET DOSGROUP:BadCall, 0
DW OFFSET DOSGROUP:OKCall, 0 ; 1 MFT_enter
DW OFFSET DOSGROUP:OKCall, 0 ; 2 MFTClose
DW OFFSET DOSGROUP:BadCall, 0 ; 3 MFTclU
DW OFFSET DOSGROUP:BadCall, 0 ; 4 MFTCloseP
DW OFFSET DOSGROUP:BadCall, 0 ; 5 MFTCloN
DW OFFSET DOSGROUP:BadCall, 0 ; 6 set_block
DW OFFSET DOSGROUP:BadCall, 0 ; 7 clr_block
DW OFFSET DOSGROUP:OKCall, 0 ; 8 chk_block
DW OFFSET DOSGROUP:BadCall, 0 ; 9 MFT_get
DW OFFSET DOSGROUP:BadCall, 0 ; 10 ShSave
DW OFFSET DOSGROUP:BadCall, 0 ; 11 ShChk
DW OFFSET DOSGROUP:OKCall , 0 ; 12 ShCol
DW OFFSET DOSGROUP:BadCall, 0 ; 13 ShCloseFile
DW OFFSET DOSGROUP:BadCall, 0 ; 14 ShSU
MSCT001E:
CONSTANTS ENDS
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