1
0
mirror of https://github.com/cc65/cc65.git synced 2024-12-27 00:29:31 +00:00
cc65/libsrc/runtime/asrax1.s

17 lines
243 B
ArmAsm
Raw Normal View History

;
; Ullrich von Bassewitz, 06.08.1998
;
; CC65 runtime: Scale the primary register
;
.export asrax1
.importzp tmp1
asrax1: stx tmp1
cpx #$80 ; Put bit 7 into carry
ror tmp1
ror a
ldx tmp1
rts