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29 lines
749 B
NASM
29 lines
749 B
NASM
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; trivial demo program: read input, swap case and write out
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; assemble using Anton Treuenfels' HXA assembler
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; with I6502.A macro file
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; HXA_TW.EXE swapcase.asm
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; (runs on Linux if you have WINE installed)
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; which will make
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; SWAPCASE.HEX
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; where the first line should not be input to the hexloader
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.hexfile
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.cpu T_32_M16
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.assume BIT32=1032, BIT32R=3210
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.include "i6502.a"
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; I/O is memory-mapped in py65:
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PUTC = $f001
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GETC = $f005 ; blocking input
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; the py65 hexload boot ROM will only load to $0200
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.ORG $200
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another
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lda GETC
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eor #$20 ; swap upper and lower case as a demo
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sta PUTC
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jmp another
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