mirror of
https://github.com/cc65/cc65.git
synced 2024-08-19 02:29:33 +00:00
60 lines
1.2 KiB
ArmAsm
60 lines
1.2 KiB
ArmAsm
|
;
|
||
|
; Oliver Schmidt, 12.01.2005
|
||
|
;
|
||
|
|
||
|
.export rwprolog, rwcommon, rwepilog
|
||
|
.import oserrexit
|
||
|
.import popax
|
||
|
|
||
|
.include "zeropage.inc"
|
||
|
.include "fcntl.inc"
|
||
|
.include "mli.inc"
|
||
|
.include "filedes.inc"
|
||
|
|
||
|
rwprolog:
|
||
|
; Save count
|
||
|
sta ptr2
|
||
|
stx ptr2+1
|
||
|
|
||
|
; Get and save buf
|
||
|
jsr popax
|
||
|
sta ptr1
|
||
|
stx ptr1+1
|
||
|
|
||
|
; Get and process fd
|
||
|
jsr popax
|
||
|
jmp getfd ; Returns A, Y and C
|
||
|
|
||
|
rwcommon:
|
||
|
; Set fd
|
||
|
sta mliparam + MLI::RW::REF_NUM
|
||
|
|
||
|
; Set buf
|
||
|
lda ptr1
|
||
|
ldx ptr1+1
|
||
|
sta mliparam + MLI::RW::DATA_BUFFER
|
||
|
stx mliparam + MLI::RW::DATA_BUFFER+1
|
||
|
|
||
|
; Set count
|
||
|
lda ptr2
|
||
|
ldx ptr2+1
|
||
|
sta mliparam + MLI::RW::REQUEST_COUNT
|
||
|
stx mliparam + MLI::RW::REQUEST_COUNT+1
|
||
|
|
||
|
; Call read or write
|
||
|
tya
|
||
|
ldx #RW_COUNT
|
||
|
jsr callmli
|
||
|
bcc rwepilog
|
||
|
cmp #$4C ; "End of file"
|
||
|
bne oserr
|
||
|
|
||
|
rwepilog:
|
||
|
; Return success
|
||
|
lda mliparam + MLI::RW::TRANS_COUNT
|
||
|
ldx mliparam + MLI::RW::TRANS_COUNT+1
|
||
|
rts
|
||
|
|
||
|
; Return oserror
|
||
|
oserr: jmp oserrexit
|