ack/mach/z80/libem/pstrng.s

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.define pstrng
.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
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! print a string of characters to the console
! entry: DE points to string
! string terminator is 0x00
! exit: DE points to string terminator
pstrng: push af
1: ld a,(de)
or a
jr z,2f
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call putchar
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inc de
jr 1b
2: pop af
ret