I need to just put all the code on GitHub… I haven’t had a chance to finish it yet or clean it up… but I should find the time to post what I have for anyone who wants to play with it. Personally I don’t consider it super useful without a paired compiler, but perhaps that’s just me.
Therefore, would you extend your VM to support 32-bit arithmetics?
That would require some thought… the stack is currently all 16-bit values… the opcodes that process data all 16-bit, etc… To go all in on 32-bit you’d really need a dedicated series of 32-bit push/pop/math opcodes… I’m using 7 bits to store the opcode though, so that does allow 128 instructions (of which I’m only using 36 or so) - so we would have plenty of space in the instruction set for 8 and 32-bit ops.
Perhaps one could add 32-bit math just by making the stack (largely) agnostic about what it’s storing… if you call push32 push32 mul32… then you are pushed 8 bytes unto the stack and multiplying them as two 32-bit numbers…
I’ll see if I can get what I have so far published by Sun/Mon… it’s at home on my other system though or I’d work on it right now.