v4.0/src/BIOS/BIOSTRUC.INC

   1 %OUT BIOSTRUC.INC...
   2 ;       SCCSID = @(#)BIOSTRUC.INC 1.0 86/09/30
   3 ; ROM BIOS CALL PACKET STRUCTURES
   4
   5 ;*******************************
   6 ;System Service call ( Int 15h )
   7 ;*******************************
   8 ;Function AH = 0C0h, Return system configuration
   9 ;For PC and PCJR on return:
  10 ;       (AH)    = 80h
  11 ;       (CY)    = 1
  12 ;For PCXT, PC PORTABLE and PCAT on return:
  13 ;       (AH)    = 86h
  14 ;       (CY)    = 1
  15 ;For all others:
  16 ;       (AH)    = 0
  17 ;       (CY)    = 0
  18 ;       (ES:BX) = pointer to system descriptor vector in ROS
  19 ; System descriptor :
  20 ;       DW      xxxx            length of descriptor in bytes,
  21 ;                               minimum length = 8
  22 ;       DB      xx              model byte
  23 ;                               0FFh    = PC
  24 ;                               0FEh    = PC/XT, Portable
  25 ;                               0FDh    = PC/JR
  26 ;                               0FCh    = PC/AT, 6Mhz PC/AT,
  27 ;                                         6Mhz PC/AT running coprocessor(?),
  28 ;                                         PS/2 Model 50, 50 z
  29 ;                               0FAh    = PS/2 Model 25, 30
  30 ;                               0F9h    = PC Convertible
  31 ;                               0F8h    = PS/2 Model 80
  32 ;                               0F7h    = Nova
  33 ;                               0E0 thru 0EFh = reserved
  34 ;
  35 ;       DB      xx              secondary model byte
  36 ;                               000h    = PC1
  37 ;                               000h    = PC/XT, Portable
  38 ;                               000h    = PC/JR
  39 ;                               000h    = PC/AT
  40 ;                               001h    = 6Mhz PC/AT
  41 ;                               003h    = 6Mhz PC/AT running coprocessor(?)
  42 ;                               004h    = PS/2 Model 50, 50z
  43 ;                               001h    = PS/2 Model 25
  44 ;                               000h    = PC Convertible
  45 ;                               000h    = PS/2 Model 80
  46 ;                               000h    = Nova
  47 ;
  48 ;       DB      xx              bios revision level
  49 ;                               00 for first release, subsequent release
  50 ;                               of code with same model byte and
  51 ;                               secondary model byte require revison level
  52 ;                               to increase by one.
  53 ;
  54 ;       DB      xx              feature information byte 1
  55 ;                               X0000000 = 1, bios use DMA channel 3
  56 ;                                        = 0, DMA channel 3 not used
  57 ;
  58 ;                               0X000000 = 1, 2nd Interrupt chip present
  59 ;                                        = 0, 2nd Interrupt chip not present
  60 ;
  61 ;                               00X00000 = 1, Real Time Clock present
  62 ;                                        = 0, Real Time Clock not present
  63 ;
  64 ;                               000X0000 = 1, Keyboard escape sequence(INT15h)
  65 ;                                               called in keyboard interrupt
  66 ;                                               (Int 09h).
  67 ;                                        = 0, Keyboard escape sequence not
  68 ;                                               called.
  69 ;                               0000XXXX reserved
  70 ;
  71 ;       DB      xx              feature information byte 2 - reserved
  72 ;
  73 ;       DB      xx              feature information byte 2 - reserved
  74 ;
  75 ;       DB      xx              feature information byte 2 - reserved
  76 ;
  77 ;       DB      xx              feature information byte 2 - reserved
  78 ;
  79
  80 BIOS_SYSTEM_DESCRIPTOR  struc
  81 bios_SD_leng            dw      ?
  82 bios_SD_modelbyte       db      ?
  83 bios_SD_scnd_modelbyte  db      ?
  84                         db      ?
  85 bios_SD_featurebyte1    db      ?
  86                         db   4 dup (?)
  87 BIOS_SYSTEM_DESCRIPTOR ends
  88
  89 ;FeatureByte1   bit map equates
  90 DMAchannel3             equ 10000000b
  91 ScndIntController       equ 01000000b
  92 RealTimeClock           equ 00100000b
  93 KeyEscapeSeq            equ 00010000b
  94 ;
  95 ;Model Byte
  96 MDL_PC1         EQU     0FFH
  97 MDL_XT          EQU     0FEH
  98 MDL_JR          EQU     0FDH
  99 MDL_AT          EQU     0FCH
 100 MDL_CONVERT     EQU     0F9H
 101
 102 mdl_ps2_30      equ     0fah
 103 mdl_ps2_80      equ     0f8h