v4.0/src/INC/CONST2.ASM

   1 ;       SCCSID = @(#)const2.asm 1.4 85/07/24
   2 TITLE   CONST2 - More constants data
   3 NAME    CONST2
   4
   5 .xlist
   6 .xcref
   7 INCLUDE DOSSYM.INC
   8 include dosseg.asm
   9 INCLUDE DEVSYM.INC
  10 .cref
  11 .list
  12
  13 Break <Initialized data and data used at DOS initialization>
  14
  15 ;
  16 ; We need to identify the parts of the data area that are relevant to tasks
  17 ; and those that are relevant to the system as a whole.  Under 3.0, the system
  18 ; data will be gathered with the system code.  The process data under 2.x will
  19 ; be available for swapping and under 3.0 it will be allocated per-process.
  20 ;
  21 ; The data that is system data will be identified by [SYSTEM] in the comments
  22 ; describing that data item.
  23 ;
  24
  25         AsmVars <Kanji, Debug, Redirector, ShareF>
  26
  27 CONSTANTS       SEGMENT WORD PUBLIC 'CONST'
  28
  29 ;
  30 ; Table of routines for assignable devices
  31 ;
  32 ; MSDOS allows assignment if the following standard devices:
  33 ;   stdin  (usually CON input)
  34 ;   stdout (usually CON output)
  35 ;   auxin  (usually AUX input)
  36 ;   auxout (usually AUX output)
  37 ;   stdlpt (usually PRN output)
  38 ;
  39 ; SPECIAL NOTE:
  40 ;   Status of a file is a strange idea.  We choose to handle it in this
  41 ;   manner:  If we're not at end-of-file, then we always say that we have a
  42 ;   character.  Otherwise, we return ^Z as the character and set the ZERO
  43 ;   flag.  In this manner we can support program written under the old DOS
  44 ;   (they use ^Z as EOF on devices) and programs written under the new DOS
  45 ;   (they use the ZERO flag as EOF).
  46
  47 ; Default SFTs for boot up
  48
  49 Public CONST001S,CONST001E
  50 CONST001s       label byte
  51         PUBLIC  sftabl
  52 sftabl  LABEL   DWORD                   ; [SYSTEM] file table
  53         DW      -1                      ; [SYSTEM] link to next table
  54         DW      -1                      ; [SYSTEM] link seg to next table
  55         DW      sf_default_number       ; [SYSTEM] Number of entries in table
  56         DB      sf_default_number DUP ( (SIZE sf_entry) DUP (0)); [SYSTEM]
  57
  58 ; the next two variables relate to the position of the logical stdout/stdin
  59 ; cursor.  They are only meaningful when stdin/stdout are assigned to the
  60 ; console.
  61         I_am    CARPOS,BYTE             ; [SYSTEM] cursor position in stdin
  62         I_am    STARTPOS,BYTE           ; [SYSTEM] position of cursor at beginning of buffered input call
  63         I_am    INBUF,128               ; [SYSTEM] general device input buffer
  64         I_am    CONBUF,131              ; [SYSTEM] The rest of INBUF and console buffer
  65
  66         I_am    PFLAG,BYTE              ; [SYSTEM] printer echoing flag
  67         I_am    VERFLG,BYTE             ; [SYSTEM] Initialize with verify off
  68         I_am    CharCo,BYTE,<00000011B> ; [SYSTEM] Allows statchks every 4 chars...
  69         I_am    chSwitch,BYTE,<'/'>     ; [SYSTEM] current switch character
  70         I_am    AllocMethod,BYTE        ; [SYSTEM] how to alloc first(best)last
  71         I_am    fShare,BYTE,<0>         ; [SYSTEM] TRUE => sharing installed
  72         I_am    DIFFNAM,BYTE,<1>        ; [SYSTEM] Indicates when MYNAME has
  73                                         ;            changed
  74         I_am    MYNAME,16,<32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32>
  75                                         ; [SYSTEM] My network name
  76
  77
  78 ;
  79 ; The following table is a list of addresses that the sharer patches to be
  80 ; PUSH AX to enable the critical sections
  81 ;
  82 PUBLIC  CritPatch
  83 CritPatch LABEL WORD
  84 IRP sect,<critDisk,critDevice>
  85 IF (NOT REDIRECTOR) AND (NOT SHAREF)
  86         Short_Addr  E&sect
  87         Short_Addr  L&sect
  88 ELSE
  89         DW      0
  90         DW      0
  91 ENDIF
  92 ENDM
  93         DW      0
  94
  95 ;
  96 ; WARNING!!!  PRINT and PSPRINT *REQUIRE* ErrorMode to precede INDOS.
  97 ; Also, IBM server 1.0 requires this also.
  98 ;
  99         EVEN                    ; Force swap area to start on word boundry
 100 PUBLIC  SWAP_START
 101 SWAP_START      LABEL BYTE
 102         I_am    ErrorMode,BYTE          ; Flag for INT 24 processing
 103         I_am    INDOS,BYTE,<0>          ; DOS status for interrupt processing
 104         I_am    WPErr,BYTE,<-1>         ; Write protect error flag
 105         I_am    EXTERR_LOCUS,BYTE       ; Extended Error Locus
 106         I_am    EXTERR,WORD,<0>         ; Extended Error code
 107
 108 ;WARNING Following two bytes Accessed as word in $GetExtendedError
 109         I_am    EXTERR_ACTION,BYTE      ; Extended Error Action
 110         I_am    EXTERR_CLASS,BYTE       ; Extended Error Class
 111 ; end warning
 112
 113         I_am    EXTERRPT,DWORD          ; Extended Error pointer
 114         I_am    DMAADD,DWORD,<80h,?>    ; User's disk transfer address (disp/seg)
 115         I_am    CurrentPDB,WORD         ; Current process identifier
 116         I_am    ConC_spsave,WORD        ; saved SP before ^C
 117         I_am    exit_code,WORD          ; exit code of last proc.
 118         I_am    CURDRV,BYTE             ; Default drive (init A)
 119         I_am    CNTCFLAG,BYTE,<0>       ; ^C check in dispatch disabled
 120                                         ; F.C. 2/17/86
 121         I_am    CPSWFLAG,BYTE,<0>       ; Code Page Switching Flag  DOS 4.00
 122         I_am    CPSWSAVE,BYTE,<0>       ; copy of above in case of ABORT
 123         EVEN
 124  PUBLIC Swap_Always
 125  Swap_Always    LABEL   BYTE
 126         I_am    USER_IN_AX,WORD         ; User INPUT AX value (used for
 127                                         ;   extended error type stuff.  NOTE:
 128                                         ;   does not have Correct value on
 129                                         ;   1-12, OEM, Get/Set CurrentPDB,
 130                                         ;   GetExtendedError system calls
 131         I_am    PROC_ID,WORD,<0>        ; PID for sharing (0 = local)
 132         I_am    USER_ID,WORD,<0>        ; Machine for sharing (0 = local)
 133         I_am    FirstArena,WORD         ; first free block found
 134         I_am    BestArena,WORD          ; best free block found
 135         I_am    LastArena,WORD          ; last free block found
 136         I_am    EndMem,WORD             ; End of memory used in DOSINIT
 137         I_am    LASTENT,WORD            ; Last entry for directory search
 138
 139         I_am    FAILERR,BYTE,<0>        ; NZ if user did FAIL on I 24
 140         I_am    ALLOWED,BYTE,<0>        ; Allowed I 24 answers (see allowed_)
 141         I_am    NoSetDir,BYTE           ; true -> do not set directory
 142         I_am    DidCTRLC,BYTE           ; true -> we did a ^C exit
 143         I_am    SpaceFlag,BYTE          ; true -> embedded spaces are allowed in FCB
 144 ; Warning!  The following items are accessed as a WORD in TIME.ASM
 145         EVEN
 146         I_am    DAY,BYTE,<0>            ; Day of month
 147         I_am    MONTH,BYTE,<0>          ; Month of year
 148         I_am    YEAR,WORD,<0>           ; Year (with century)
 149         I_am    DAYCNT,WORD,<-1>        ; Day count from beginning of year
 150         I_am    WEEKDAY,BYTE,<0>        ; Day of week
 151 ; end warning
 152         I_am    CONSWAP,BYTE            ; TRUE => console was swapped during device read
 153         I_am    IDLEINT,BYTE,<1>        ; TRUE => idle int is allowed
 154         I_am    fAborting,BYTE,<0>      ; TRUE => abort in progress
 155
 156 ; Combination of all device call parameters
 157         PUBLIC  DEVCALL                 ;
 158 DEVCALL SRHEAD  <>                      ; basic header for disk packet
 159         PUBLIC  CALLUNIT
 160 CALLUNIT    LABEL   BYTE                ; unit number for disk
 161 CALLFLSH    LABEL   WORD                ;
 162         I_am    CALLMED,BYTE            ; media byte
 163 CALLBR      LABEL   DWORD               ;
 164         PUBLIC  CALLXAD                 ;
 165 CALLXAD     LABEL   DWORD               ;
 166         I_am    CALLRBYT,BYTE           ;
 167         PUBLIC  CALLVIDM                ;
 168 CALLVIDM    LABEL   DWORD               ;
 169         DB      3 DUP(?)                ;
 170         PUBLIC CallBPB                  ;
 171 CALLBPB     LABEL   DWORD               ;
 172         I_am    CALLSCNT,WORD           ;
 173         PUBLIC  CALLSSEC
 174 CALLSSEC    LABEL    WORD               ;
 175             DW      ?                   ;
 176         I_am    CALLVIDRW,DWORD         ;
 177                                         ;
 178         I_am    CALLNEWSC,DWORD         ; starting sector for >32mb
 179         I_am    CALLDEVAD,DWORD         ; stash for device entry point
 180                                         ;
 181 ; Same as above for I/O calls           ;
 182                                         ;
 183         PUBLIC  IOCall                  ;
 184 IOCALL  SRHEAD  <>                      ;
 185 IOFLSH  LABEL   WORD                    ;
 186         PUBLIC  IORCHR                  ;
 187 IORCHR  LABEL   BYTE                    ;
 188         I_am    IOMED,BYTE              ;
 189         I_am    IOXAD,DWORD             ;
 190         I_am    IOSCNT,WORD             ;
 191         I_am    IOSSEC,WORD             ;
 192 ; Call struct for DSKSTATCHK            ;
 193         I_am    DSKSTCALL,2,<DRDNDHL,0> ;
 194         I_am    DSKSTCOM,1,<DEVRDND>    ;
 195         I_am    DSKSTST,WORD            ;
 196         DB      8 DUP (0)               ;
 197         I_am    DSKCHRET,BYTE           ;
 198         short_addr  DEVIOBUF            ;
 199         DW      ?                       ; DOS segment set at Init
 200         I_AM    DSKSTCNT,WORD,<1>       ;
 201         DW      0                       ;
 202
 203         I_am    CreatePDB,BYTE          ; flag for creating a process
 204         PUBLIC  Lock_Buffer             ;
 205 Lock_Buffer LABEL    DWORD              ;MS. DOS Lock Buffer for Ext Lock
 206             DD      ?                   ;MS. position
 207             DD      ?                   ;MS. length
 208 CONST001e       label byte
 209
 210 CONSTANTS       ENDS
 211         END