JIT compiler for 6502 machine code, built on lib6502 and LLVM

https://github.com/ZornsLemma/lib6502-jit

by luu • 11 years ago

59 7 11 years ago

I don't think the 6502 will ever die. It is too popular and was used in a lot of 8 bit computers and video game consoles.

http://www.cc65.org/ Is a C based 6502 compiler that people looking at this JIT compile might be interested in.

univacky• 11 years ago

Here are some brand new 6502 dev boards:

http://www.mouser.com/search/refine.aspx?Ntk=P_MarCom&Ntt=%2...

fit2rule• 11 years ago

I only wish that this JIT compiler was for cc65 so that it produced faster 6502 code. Anyone know of any efforts to do that - my Oric Atmos sessions would definitely benefit!

ksherlock• 11 years ago

Related - Statically Recompiling NES Games into Native Executables with LLVM and Go (http://andrewkelley.me/post/jamulator.html)

hrrld• 11 years ago

Super-interesting article, thank you for sharing.

Two great quotes from near the bottom...

"At this point in the project we have Super Mario Brothers 1 running mostly on native code, although not very highly optimized. We've learned that static compilation, while possible, is rendered pointless by some of the inherent challenges that emulating a system presents."

and...

"These issues must be resolved if we want a playable game. Sadly, the solution marks the final nail in the coffin of the integrity of this project."

So brave. 10/10 - would read again.

0x0• 11 years ago

Dealing with self-modifying code must be one of the hardest tricks to pull off. Saw a notice in TODO about memory leaks, I guess that means there is actually some support for this? Even with leaks that sounds quite impressive.

meow98765• 11 years ago

JIT compiling 6502 code is an idea that has been around for a long, long time.

http://tuxnes.sourceforge.net/

JIT compiler for 6502 machine code, built on lib6502 and LLVM

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