cc65/libsrc/cbm/c_save.s
mrintsch 16fded6d0c Loading and saving memory areas on cbm platforms
git-svn-id: svn://svn.cc65.org/cc65/trunk@625 b7a2c559-68d2-44c3-8de9-860c34a00d81
2001-03-13 22:48:19 +00:00

28 lines
615 B
ArmAsm

;
; Marc 'BlackJack' Rintsch, 11.06.1999
;
; unsigned __fastcall__ cbm_k_save(unsigned int start, unsigned int end);
;
.include "cbm.inc"
.export _cbm_k_save
.import popax
.importzp ptr1, tmp1
_cbm_k_save:
sta tmp1 ; store end address
stx tmp1+1
jsr popax ; pop start address
sta ptr1
stx ptr1+1
lda #ptr1
ldx tmp1
ldy tmp1+1
jsr SAVE
ldx #0
bcc @Ok
inx
rts
@Ok: txa
rts