34 lines
617 B
ArmAsm
34 lines
617 B
ArmAsm
;; #LAYOUT# M65 KERNAL_0 #TAKE
|
|
;; #LAYOUT# * * #IGNORE
|
|
|
|
|
|
; 'Print immediate', original implementation by Mike Barry, adapted to 65CE02, modified to preserve .Y
|
|
; see http://www.6502.org/source/io/primm.htm
|
|
|
|
|
|
PRIMM:
|
|
|
|
pla ; get low part of (string address-1)
|
|
sta PTR1
|
|
pla ; get high part of (string address-1)
|
|
sta PTR2
|
|
phy
|
|
+bra @2
|
|
@1:
|
|
jsr JCHROUT ; output a string char
|
|
@2:
|
|
inc PTR1 ; advance the string pointer
|
|
bne @3
|
|
inc PTR2
|
|
@3:
|
|
ldy #$00
|
|
lda (PTR1), y ; get string char
|
|
bne @1 ; output and continue if not NUL
|
|
ply
|
|
lda PTR2
|
|
pha
|
|
lda PTR1
|
|
pha
|
|
|
|
rts
|