mirror of https://github.com/hsoft/collapseos.git
74 lines
952 B
NASM
74 lines
952 B
NASM
.equ foo 456 ; AFTER_ORG should not get that value
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.org 0x1234
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.equ AFTER_ORG @
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.org 0
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jp test
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dummyLabel:
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testNum: .db 1
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.equ dummyLabel 0x42
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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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; Test that .equ can override label
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ld a, 0x42
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ld hl, dummyLabel
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cp l
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jp nz, fail
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call nexttest
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; test that "@" is updated by a .org directive
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ld hl, AFTER_ORG
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ld de, 0x1234
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or a ; clear carry
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sbc hl, de
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jp nz, fail
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call nexttest
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; test that AND affects the Z flag
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ld a, 0x69
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and 0x80
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jp nz, 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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