2000-05-28 13:40:48 +00:00
|
|
|
;
|
|
|
|
; Ullrich von Bassewitz, 06.08.1998
|
|
|
|
;
|
|
|
|
; CC65 runtime: Scale the primary register by 4
|
|
|
|
;
|
|
|
|
|
2013-05-09 13:56:54 +02:00
|
|
|
.export asrax2
|
|
|
|
.importzp tmp1
|
2000-05-28 13:40:48 +00:00
|
|
|
|
2013-05-09 13:56:54 +02:00
|
|
|
asrax2: stx tmp1
|
|
|
|
cpx #$80 ; Put bit 7 into carry
|
|
|
|
ror tmp1
|
|
|
|
ror a
|
|
|
|
cpx #$80
|
|
|
|
ror tmp1
|
|
|
|
ror a
|
|
|
|
ldx tmp1
|
|
|
|
rts
|
2000-05-28 13:40:48 +00:00
|
|
|
|