51 lines
1.2 KiB
NASM
51 lines
1.2 KiB
NASM
|
; Set 8-bit accumulator
|
||
|
|
setaxs .macro
|
||
|
|
SEP #$30 ; set A&X short
|
||
|
|
.as
|
||
|
|
.xs
|
||
|
|
.endm
|
||
|
|
|
||
|
|
; Set 16-bit accumulator
|
||
|
|
setaxl .macro
|
||
|
|
REP #$30 ; set A&X long
|
||
|
|
.al
|
||
|
|
.xl
|
||
|
|
.endm
|
||
|
|
|
||
|
|
; Set 8-bit accumulator
|
||
|
|
setas .macro
|
||
|
|
SEP #$20 ; set A short
|
||
|
|
.as
|
||
|
|
.endm
|
||
|
|
|
||
|
|
; Set 16-bit accumulator
|
||
|
|
setal .macro
|
||
|
|
REP #$20 ; set A long
|
||
|
|
.al
|
||
|
|
.endm
|
||
|
|
|
||
|
|
; Set 8 bit index registers
|
||
|
|
setxs .macro
|
||
|
|
SEP #$10 ; set X short
|
||
|
|
.xs
|
||
|
|
.endm
|
||
|
|
|
||
|
|
; Set 16-bit index registers
|
||
|
|
setxl .macro
|
||
|
|
REP #$10 ; set X long
|
||
|
|
.xl
|
||
|
|
.endm
|
||
|
|
|
||
|
|
sdb .macro ; Set the B (Data bank) register
|
||
|
|
pha ; begin setdbr macro
|
||
|
|
php
|
||
|
|
.setas
|
||
|
|
lda #\1
|
||
|
|
pha
|
||
|
|
plb
|
||
|
|
.databank \1
|
||
|
|
plp
|
||
|
|
pla ; end setdbr macro
|
||
|
|
.endm
|
||
|
|
|