home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Frozen Fish 1: Amiga
/
FrozenFish-Apr94.iso
/
bbs
/
alib
/
d1xx
/
d165
/
parsnag.lha
/
Parsnag
/
par.asm
< prev
next >
Wrap
Assembly Source File
|
1988-11-22
|
771b
|
33 lines
;par.asm - parsnag parallel support routines (c) 1987 John Hodgson
;compile using the Aztec AS assembler with -C and -D options
public _ParDispatch
public _ParExpunge
;entry : a1=IOExtPar, a6=device vector table
_ParDispatch:
move.w $1c(a1),d0 ;fetch io_Command
cmp.w #3,d0 ;CMD_WRITE?
bne .1 ;skip if not
movem.l d1-d7/a2-a6,-(sp) ;save regs
move.l a1,-(sp) ;push ioblock ptr for C
jsr _NewBeginSub ;call it!
move.l (sp)+,a1 ;restore regs
movem.l (sp)+,d1-d7/a2-a6
rts ;back w/result in D0
.1
move.l _OldBeginIO,a0 ;fetch original BeginIO vector
jmp (a0) ;routine will rts for us
;credit to Caroline Scheppner for this one :
_ParExpunge:
moveq.l #0,d0 ;"no error"
rts ;back w/o expunge
public _OldBeginIO
public _NewBeginSub