x6502
65C02 Emulator for Ben Eater's 6502 computer kit (by MaverickAlex)
6502_65C02_functional_tests
Tests for all valid opcodes of the 6502 and 65C02 processor (by Klaus2m5)
x6502 | 6502_65C02_functional_tests | |
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2 | 7 | |
0 | 364 | |
- | - | |
0.0 | 0.0 | |
over 2 years ago | about 1 year ago | |
Assembly | ||
BSD 4-Clause "Original" or "Old" License | GNU General Public License v3.0 only |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
x6502
Posts with mentions or reviews of x6502.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-12-27.
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Built a 65C02 emulator
https://github.com/MaverickAlex/x6502/blob/master/src/functions.h example decimal support here,in the add and substract methods, I added it to this emulator that I found and forked. Much impressed with writing entire thing in windows.
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6502 assembly weirdness
Been working on setting up Ben's 6502 project and I'm mostly done. Did some work on an emulator that I found had some small bugs. https://github.com/MaverickAlex/x6502
6502_65C02_functional_tests
Posts with mentions or reviews of 6502_65C02_functional_tests.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-09-09.
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Show HN: Ghidra Plays Mario
Klaus Dormann's 6502 tests don't rely on a particular emulator environment. They could be used with Ghidra.
https://github.com/Klaus2m5/6502_65C02_functional_tests
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How do I tell if my 65c02 is bad?
How about some assembler code to test all of the opcodes? https://github.com/klaus2m5/6502_65c02_functional_tests
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I made a cycle accurate profiler for 65C02 assembly with visualizations
https://github.com/Klaus2m5/6502_65C02_functional_tests might be worth a look, it's a comprehensive test suite
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What's the address of the monitor disassembly routine?
Great! (and not surprising). You may want to look into using a 6520 test suite to check correctness of your emulator, like this one -- note: I have no experience with it, but it took me some time to iron out the last error of my 6502 emulator, and in hindsight I should probably have used such test suite.
- Built a 65C02 emulator
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Test - Corner cases for 6502 Instructions.
Currently i'm trying to implement 6502's instructions one by one using TDD. I was curious are there any test - corner cases already been written ? I found out ( https://github.com/Klaus2m5/6502_65C02_functional_tests ) but this requires all instructions to be implemented which I don't currently. Is there any way to test a single instruction in isolation for all the edge cases ?
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Apple //e enhanced ROM oddness
By "bad branch", I mean the emulator takes the wrong branch because it fails to emulate some part of the Apple hardware properly. The 65C02 emulation has passed some pretty stringent tests (https://github.com/Klaus2m5/6502_65C02_functional_tests/blob/master/bin_files/65C02_extended_opcodes_test.lst), so I'm pretty confident in it. But the instruction trace file is around 90,000 lines, so is kinda hard to slog through.
What are some alternatives?
When comparing x6502 and 6502_65C02_functional_tests you can also consider the following projects:
retro - Retro Games in Gym
Gymnasium - An API standard for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)
MO-Gymnasium - Multi-objective Gymnasium environments for reinforcement learning
ghidra-plays-mario - Playing NES ROMs with Ghidra's PCode Emulator
ghidra-tlcs900h - Ghidra processor module for Toshiba TLCS-900/H