Undocumented 8080 instructions?
legalize at xmission.com
Sun Dec 26 13:43:46 CST 2010
In article <4D164D02.6030004 at brouhaha.com>,
Eric Smith <eric at brouhaha.com> writes:
> Chuck Guzis wrote:
> > To the best of my recollection, the undocumented 8080
> > opcodes are, by and large, no-ops or redundancies (i.e. they do the
> > same as a close-valued opcode probably from incomplete PLA decoding).
> > No startling new "triple precision divide" instructions.
> I wasn't expecting any. The reason I'm asking is to be able to
> replicate the behavior in a simulator, in case any software happened to
> use them (intentionally or otherwise).
Didn't the visual 6502 guys also have a project to do the 8080?
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
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