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HAM Radio 3.2
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Ham Radio Version 3.2 (Chestnut CD-ROMs)(1993).ISO
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n17jsrc
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drsivec.asm
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Assembly Source File
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1991-01-27
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696b
|
42 lines
; DRSI 8530 card interrupt hooks
.MODEL MEMMOD,C
LOCALS
%MACS
.LALL
extrn Stktop,Spsave,Sssave,drint:proc,doret:proc,eoi:proc
.CODE
dbase dw @Data ; save loc for ds (must be in code segment)
; dr0vec - DRSI card #0 interrupt handler
public dr0vec
label dr0vec far
push ds ; save on user stack
mov ds,cs:dbase ; establish interrupt data segment
mov Sssave,ss ; stash user stack context
mov Spsave,sp
mov ss,cs:dbase
lea sp,Stktop
push ax ; save user regs on interrupt stack
push bx
push cx
push dx
push bp
push si
push di
push es
call eoi
mov ax,0 ; arg for service routine
push ax
call drint
pop ax
jmp doret
end