mirror of
https://github.com/cc65/cc65.git
synced 2024-11-03 10:07:02 +00:00
42 lines
437 B
ArmAsm
42 lines
437 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 13.09.2001
|
||
|
|
;
|
||
|
|
; Banking routines for the 510.
|
||
|
|
;
|
||
|
|
|
||
|
|
.export set_bank, sys_bank, restore_bank
|
||
|
|
.importzp ptr1
|
||
|
|
|
||
|
|
.include "zeropage.inc"
|
||
|
|
|
||
|
|
.code
|
||
|
|
|
||
|
|
.proc sys_bank
|
||
|
|
pha
|
||
|
|
lda IndReg
|
||
|
|
sta IndSegSave
|
||
|
|
lda #$0F
|
||
|
|
sta IndReg
|
||
|
|
pla
|
||
|
|
rts
|
||
|
|
.endproc
|
||
|
|
|
||
|
|
.proc set_bank
|
||
|
|
pha
|
||
|
|
lda IndReg
|
||
|
|
sta IndSegSave
|
||
|
|
pla
|
||
|
|
sta IndReg
|
||
|
|
rts
|
||
|
|
.endproc
|
||
|
|
|
||
|
|
.proc restore_bank
|
||
|
|
pha
|
||
|
|
lda IndSegSave
|
||
|
|
sta IndReg
|
||
|
|
pla
|
||
|
|
rts
|
||
|
|
.endproc
|
||
|
|
|
||
|
|
|