home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The Pier Shareware 6
/
The_Pier_Shareware_Number_6_(The_Pier_Exchange)_(1995).iso
/
024
/
psi110g.zip
/
ASYVEC.ASM
< prev
next >
Wrap
Assembly Source File
|
1994-08-26
|
4KB
|
199 lines
; ASY (8250/16450/16550A "comm" port) interrupt hooks
; Copyright 1991 Phil Karn, KA9Q
;% .MODEL MEMMOD,C
include asmglobal.h
%MACS
extrn doretch:proc,asyint:far,eoi:proc
.DATA
extrn Sssave:word
extrn Spsave:word
extrn Stktop
.CODE
dbase dw @Data
; asy0vec - asynch channel 0 interrupt handler
public asy0vec
label asy0vec 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
PUSHALL
push es
call eoi
mov ax,0 ; arg for service routine
push ax
call asyint
inc sp
inc sp
jmp doretch
; asy1vec - asynch channel 1 interrupt handler
public asy1vec
label asy1vec 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
PUSHALL
push es
call eoi
mov ax,1 ; arg for service routine
push ax
call asyint
inc sp
inc sp
jmp doretch
; asy2vec - asynch channel 2 interrupt handler
public asy2vec
label asy2vec 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
PUSHALL
push es
call eoi
mov ax,2 ; arg for service routine
push ax
call asyint
inc sp
inc sp
jmp doretch
; asy3vec - asynch channel 3 interrupt handler
public asy3vec
label asy3vec 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
PUSHALL
push es
call eoi
mov ax,3 ; arg for service routine
push ax
call asyint
inc sp
inc sp
jmp doretch
; asy4vec - asynch channel 4 interrupt handler
public asy4vec
label asy4vec 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
PUSHALL
push es
call eoi
mov ax,4 ; arg for service routine
push ax
call asyint
inc sp
inc sp
jmp doretch
; asy5vec - asynch channel 5 interrupt handler
public asy5vec
label asy5vec 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
PUSHALL
push es
call eoi
mov ax,5 ; arg for service routine
push ax
call asyint
inc sp
inc sp
jmp doretch
end