mirror of https://github.com/hsoft/collapseos.git
100 lines
1.1 KiB
NASM
100 lines
1.1 KiB
NASM
jp test
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#include "core.asm"
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testNum: .db 1
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test:
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ld hl, 0xffff
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ld sp, hl
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; *** Just little z80 flags memo.
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and a ; clear carry
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ld hl, 100
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ld de, 101
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sbc hl, de
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jp nc, fail ; carry is set
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call nexttest
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and a ; clear carry
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ld hl, 101
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ld de, 100
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sbc hl, de
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jp c, fail ; carry is reset
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call nexttest
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ld a, 1
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dec a
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jp m, fail ; positive
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dec a
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jp p, fail ; negative
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call nexttest
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; *** subHL ***
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ld hl, 0x123
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ld a, 0x25
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call subHL
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ld a, h
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cp 0
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jp nz, fail
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ld a, l
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cp 0xfe
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jp nz, fail
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call nexttest
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ld hl, 0x125
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ld a, 0x23
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call subHL
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ld a, h
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cp 1
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jp nz, fail
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ld a, l
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cp 0x02
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jp nz, fail
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call nexttest
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ld hl, 0x125
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ld a, 0x25
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call subHL
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ld a, h
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cp 1
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jp nz, fail
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ld a, l
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cp 0
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jp nz, fail
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call nexttest
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; *** cpHLDE ***
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ld hl, 0x42
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ld de, 0x42
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call cpHLDE
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jp nz, fail
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jp c, fail
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call nexttest
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ld de, 0x4242
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call cpHLDE
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jp z, fail
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jp nc, fail
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call nexttest
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ld hl, 0x4243
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call cpHLDE
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jp z, fail
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jp c, fail
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call nexttest
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; success
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xor a
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halt
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nexttest:
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ld a, (testNum)
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inc a
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ld (testNum), a
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ret
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fail:
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ld a, (testNum)
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halt
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