Show HN: MOS6502 in pure Lua running in WebAssembly

(carimbo.run)

48 points by delduca4 days ago

3 comments

bayangan2 days ago
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
- emulationonline1 day ago
 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.<a href="https://chiplab.emulationonline.com/6502/" rel="nofollow">https://chiplab.emulationonline.com/6502/</a>
delduca1 day ago
I’ve just updated the demo. Check it out here: <a href="https://carimbo.run/play/1.0.43/willtobyte/MOS6502/1.0.6/480p/" rel="nofollow">https://carimbo.run/play/1.0.43/willtobyte/MOS6502/1.0.6/480...</a>
NackerHughes2 days ago
How many layers of virtualisation do we need?
- djmips1 day ago
 Run it in a browser in Wine on a MAC?
 - delduca1 day ago
 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.
 - djmips1 day ago
 Have you run <a href="https://github.com/Klaus2m5/6502_65C02_functional_tests">https://github.com/Klaus2m5/6502_65C02_functional_tests</a> ?See also <a href="https://www.righto.com/2012/12/the-6502-overflow-flag-explained.html" rel="nofollow">https://www.righto.com/2012/12/the-6502-overflow-flag-explai...</a>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.
 - delduca22 hours ago
 Good call out. Thank you! I will give a try.
- delduca1 day ago
 All of them :)