ack/mach/6500/libem/zri.s

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1984-12-17 11:03:13 +00:00
.define Zrl, Zro
1987-01-30 18:41:42 +00:00
.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
1984-12-17 11:03:13 +00:00
! The subroutine Zrl makes a local zero which offset is to big.
! The offset of the local is in registerpair AX.
! The subroutine Zro is used if the address is already in zeropage.
Zrl:
jsr Locaddr ! get address of local
Zro:
lda #0
tay
sta (ADDR),y ! lowbyte = 0
iny
sta (ADDR),y ! highbyte = 0
rts