Show HN: MOS6502 in pure Lua running in WebAssembly
(carimbo.run)48 points by delduca 4 days ago | 9 comments
emulationonline 17 hours ago | root | parent |
I networked a 6502 a while ago in order to capture some behavior that isn't well documented.
You can interact with it using a wasm-based assembler in your browser. Programs only get 100 cycles to run but that should be plenty if you just want to poke around.
delduca a day ago | prev | next |
I’ve just updated the demo. Check it out here: https://carimbo.run/play/1.0.43/willtobyte/MOS6502/1.0.6/480...
NackerHughes a day ago | prev |
How many layers of virtualisation do we need?
delduca a day ago | root | parent |
None of them run in a browser powered by WebAssembly. I created a 2D engine in C++20 based on SDL, in which I can use Lua to create games. Then I thought, “I’ll make a NES emulator,” so I started with its CPU, the 6502.
djmips 16 hours ago | root | parent |
Have you run https://github.com/Klaus2m5/6502_65C02_functional_tests ?
See also https://www.righto.com/2012/12/the-6502-overflow-flag-explai...
I also note that you have the same code copy/pasted in every ALU operation which might be better expressed in one location for maintenance reasons.
delduca 7 hours ago | root | parent |
Good call out. Thank you! I will give a try.
bayangan 2 days ago | next |
This was a fun thing to see after having just finished binging Ben Eaters 6502 breadboard computer series.
Since it's printing something out I suppose it also has everything else virtualised, would be cool to be able to provide it some machine code / assembly