mirror of
https://github.com/cc65/cc65.git
synced 2024-07-05 21:29:03 +00:00
25 lines
351 B
ArmAsm
25 lines
351 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 06.08.1998
|
||
|
|
;
|
||
|
|
; CC65 runtime: Scale the primary register by 8
|
||
|
|
;
|
||
|
|
|
||
|
|
.export asrax3
|
||
|
|
.importzp tmp1
|
||
|
|
|
||
|
|
asrax3: stx tmp1
|
||
|
|
cpx #$80 ; Put bit 7 into carry
|
||
|
|
ror tmp1
|
||
|
|
ror a
|
||
|
|
ldx tmp1
|
||
|
|
cpx #$80
|
||
|
|
ror tmp1
|
||
|
|
ror a
|
||
|
|
ldx tmp1
|
||
|
|
cpx #$80
|
||
|
|
ror tmp1
|
||
|
|
ror a
|
||
|
|
ldx tmp1
|
||
|
|
rts
|
||
|
|
|