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70 lines
1.1 KiB
NASM
70 lines
1.1 KiB
NASM
// Test using some simple supported string escape \n in both string and char
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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main: {
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.label cursor = 6
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.label msg = 2
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.label line = 4
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lda #<$400
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sta.z cursor
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lda #>$400
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sta.z cursor+1
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lda #<$400
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sta.z line
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lda #>$400
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sta.z line+1
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lda #<MESSAGE
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sta.z msg
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lda #>MESSAGE
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sta.z msg+1
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__b1:
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// while(*msg)
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ldy #0
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lda (msg),y
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cmp #0
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bne __b2
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// }
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rts
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__b2:
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// case '\n':
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// line += 0x28;
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// cursor = line;
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// break;
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lda #'\n'
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ldy #0
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cmp (msg),y
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beq __b3
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// *cursor++ = *msg
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lda (msg),y
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sta (cursor),y
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// *cursor++ = *msg;
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inc.z cursor
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bne !+
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inc.z cursor+1
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!:
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__b5:
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// msg++;
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inc.z msg
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bne !+
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inc.z msg+1
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!:
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jmp __b1
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__b3:
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// line += 0x28
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lda #$28
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clc
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adc.z line
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sta.z cursor
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lda #0
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adc.z line+1
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sta.z cursor+1
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lda.z cursor
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sta.z line
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lda.z cursor+1
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sta.z line+1
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jmp __b5
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}
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MESSAGE: .text @"hello\nworld"
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.byte 0
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