I once wrote a MIPS assembler+VM in Racket. It went OK but I never used it for anything: https://github.com/gcr/mips-simulator Was a great learning experience though.
Also, let us not forget the Halt and Spontaneously Combust (HSC) instruction: ftp://reports.stanford.edu/pub/cstr/reports/csl/tr/86/289/CSL-TR-86-289.pdf .
> Add arithmetic shift left/right
> Add logical shift left/right
> Add exclusive OR (XOR)
> Pick a word size so your integer and bit ops have meaning
Questions:
> How do I set the program counter from my assembly?
> Do I have registers (seems like a stack-based VM, so no)? If not, can I have more stacks?
> Can you setup a dedicated block of memory to use as a framebuffer and render it to a <canvas> tag?
~
Good work so far!
> How do I set the program counter from my assembly? The only way to set PC is through branching
> Do I have registers (seems like a stack-based VM, so no)? If not, can I have more stacks? Like you said it's a stack-based VM, so no registers. Currently it's a single stack since it's enough. I never encountered a machine with multiple stacks, can you enlighten me about this ?
> Can you setup a dedicated block of memory to use as a framebuffer and render it to a <canvas> tag I made this machine to be used by students to test compilers, But I think I'll add this feature in case there is any ambitious student who wants to embed a graphics library in his language :)
Thanks,
The result (which I'm pretty pleased with) is here: http://chengsun.github.io/ocremutiny.html
