11 Dec
2008
11 Dec
'08
12:25 p.m.
All this talk of CPUs got me back onto thoughts of homebrew CPU design, which
has been a stalled project of mine for the last year or so.
So, has anyone come across a good online resource which compares vintage CPU
instruction sets? It'd be useful to see what 'core' instructions* were most
common back in the day and use that as a basis for my own homebrew effort; I
think I can probably rustle up things like hardware multiply and divide, but
really don't want an all-singing solution. KISS and all that. :-)
* My hands-on knowledge is pretty much limited to Z80, 6502, 68000 and x86,
and it'd be nice to go a little further back in time - but hopefully without
having to download and digest many different databooks!
cheers
Jules