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43 lines
696 B
NASM
43 lines
696 B
NASM
// Test declaring a variable as at a hard-coded address
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// Incrementing a load/store variable will result in cause two *SIZEOF's
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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.label SCREEN = $400
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main: {
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.const ch = $102
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.label i = 2
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// i=0
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lda #0
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sta.z i
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__b1:
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// while(i<8)
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lda.z i
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cmp #8
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bcc __b2
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// }
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rts
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__b2:
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// SCREEN[i++] = ch
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lda.z i
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asl
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tay
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lda #<ch
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sta SCREEN,y
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lda #>ch
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sta SCREEN+1,y
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// SCREEN[i++] = ch;
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inc.z i
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// SCREEN[i++] = ch
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lda.z i
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asl
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tay
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lda #<ch
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sta SCREEN,y
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lda #>ch
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sta SCREEN+1,y
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// SCREEN[i++] = ch;
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inc.z i
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jmp __b1
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}
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