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%OUT BIOSTRUC.INC...
; SCCSID = @(#)BIOSTRUC.INC 1.0 86/09/30
; ROM BIOS CALL PACKET STRUCTURES
;*******************************
;System Service call ( Int 15h )
;*******************************
;Function AH = 0C0h, Return system configuration
;For PC and PCJR on return:
; (AH) = 80h
; (CY) = 1
;For PCXT, PC PORTABLE and PCAT on return:
; (AH) = 86h
; (CY) = 1
;For all others:
; (AH) = 0
; (CY) = 0
; (ES:BX) = pointer to system descriptor vector in ROS
; System descriptor :
; DW xxxx length of descriptor in bytes,
; minimum length = 8
; DB xx model byte
; 0FFh = PC
; 0FEh = PC/XT, Portable
; 0FDh = PC/JR
; 0FCh = PC/AT, 6Mhz PC/AT,
; 6Mhz PC/AT running coprocessor(?),
; PS/2 Model 50, 50 z
; 0FAh = PS/2 Model 25, 30
; 0F9h = PC Convertible
; 0F8h = PS/2 Model 80
; 0F7h = Nova
; 0E0 thru 0EFh = reserved
;
; DB xx secondary model byte
; 000h = PC1
; 000h = PC/XT, Portable
; 000h = PC/JR
; 000h = PC/AT
; 001h = 6Mhz PC/AT
; 003h = 6Mhz PC/AT running coprocessor(?)
; 004h = PS/2 Model 50, 50z
; 001h = PS/2 Model 25
; 000h = PC Convertible
; 000h = PS/2 Model 80
; 000h = Nova
;
; DB xx bios revision level
; 00 for first release, subsequent release
; of code with same model byte and
; secondary model byte require revison level
; to increase by one.
;
; DB xx feature information byte 1
; X0000000 = 1, bios use DMA channel 3
; = 0, DMA channel 3 not used
;
; 0X000000 = 1, 2nd Interrupt chip present
; = 0, 2nd Interrupt chip not present
;
; 00X00000 = 1, Real Time Clock present
; = 0, Real Time Clock not present
;
; 000X0000 = 1, Keyboard escape sequence(INT15h)
; called in keyboard interrupt
; (Int 09h).
; = 0, Keyboard escape sequence not
; called.
; 0000XXXX reserved
;
; DB xx feature information byte 2 - reserved
;
; DB xx feature information byte 2 - reserved
;
; DB xx feature information byte 2 - reserved
;
; DB xx feature information byte 2 - reserved
;
BIOS_SYSTEM_DESCRIPTOR struc
bios_SD_leng dw ?
bios_SD_modelbyte db ?
bios_SD_scnd_modelbyte db ?
db ?
bios_SD_featurebyte1 db ?
db 4 dup (?)
BIOS_SYSTEM_DESCRIPTOR ends
;FeatureByte1 bit map equates
DMAchannel3 equ 10000000b
ScndIntController equ 01000000b
RealTimeClock equ 00100000b
KeyEscapeSeq equ 00010000b
;
;Model Byte
MDL_PC1 EQU 0FFH
MDL_XT EQU 0FEH
MDL_JR EQU 0FDH
MDL_AT EQU 0FCH
MDL_CONVERT EQU 0F9H
mdl_ps2_30 equ 0fah
mdl_ps2_80 equ 0f8h
|
