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92 lines
1.2 KiB
ArmAsm
92 lines
1.2 KiB
ArmAsm
CUSTOM_NMI = 1
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CUSTOM_IRQ = 1
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.include "shell.inc"
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zp_res interrupt_count
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nmi: inc interrupt_count
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rti
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irq: inc interrupt_count
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lsr $4015
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rti
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main:
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set_test 2,"Interrupts could not be disabled"
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mov SNDCHN,#0 ; disable interrupts
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mov $4010,#0
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mov SNDMODE,#$C0
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mov PPUCTRL,#0
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cli
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mov interrupt_count,#0 ; be sure none occur
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delay_msec_approx 100
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lda interrupt_count
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jne test_failed
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set_test 3,"PHP should set bits 4 and 5 on stack"
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lda #0
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pha
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plp
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php
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pla
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and #$30
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cmp #$30
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jne test_failed
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set_test 4,"PHP and PLP should preserve bits 7,6,3,2,1,0"
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lda #0
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pha
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plp
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php
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pla
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cmp #$30
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jne test_failed
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lda #$FF
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pha
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plp
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php
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pla
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cmp #$FF
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jne test_failed
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set_test 5,"PHA should store at $100+S"
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ldx #$F1
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txs
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lda #$12
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pha
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lda #$34
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pha
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lda $1F1
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cmp #$12
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jne test_failed
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lda $1F0
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cmp #$34
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jne test_failed
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set_test 6,"JSR should push addr of next instr - 1"
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setb $6FE,$20 ; JSR
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setb $6FF,<:+
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setb $700,>:+
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jmp $6FE
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: pla
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cmp #$00
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jne test_failed
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pla
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cmp #$07
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jne test_failed
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set_test 7,"RTS should return to addr+1"
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lda #>:+
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pha
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lda #<:+
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pha
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ldx #0
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rts
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inx
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: inx
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inx
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cpx #1
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jne test_failed
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jmp tests_passed
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