cc65/libsrc/runtime/bcast.s

22 lines
269 B
ArmAsm

;
; acqn, 01.16.2020
;
; CC65 runtime: boolean cast
;
.export bcasta, bcastax
bcastax:
cpx #0
bne L1
bcasta:
tax
beq L0 ; Zero already in X
L1: ldx #0
lda #1
L0: rts