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layout: page
title: Challenger 1P Machine-Language Applications
permalink: /apps/c1p/6502/
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Challenger 1P Machine-Language Applications
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The project contains the following 6502 machine-language tests:

- [BCD](tests/bcd/bcd.asm): Verify decimal mode behavior
- [VFLAG](tests/vflag/vflag.asm): Demonstrate that the V flag works as described

along with a variety of [6502 Machine-Language Programs](jeffpar/) written by [Jeff Parsons](https://twitter.com/jeffpar)
from 1979 to 1980.