Re: 65032: Re-designed 65c832

["Arkain" <rwking@usa.nospam.net>]

Shouldn't be a problem. As far as the 32bit mode goes, I'm not sticking
strictly to the original specs. The new 65032 will have a 32bit mode switch
that makes the original 254 commands fully 32bit and adds another set of
commands that use the reserved command as the 1st byte.

I haven't decided what commands to add. That will depend on the amount of
space left after implimenting everything else. 2 pins on the new cpu will
tell the rest of the system what mode it should run in.

Arkain

"Matt Jenkins" <mdj@bilby.cs.rmit.edu.au> wrote in message
3993948a@naylor.cs.rmit.edu.au">news:3993948a@naylor.cs.rmit.edu.au...
> Heh, well, if you can actually get full on 65832 compatable chip going,
you
> can count me in for a few. The only catch I can see is that you have to
> implement 65C02, 65C816 and then 65832....
>
> IIRC, the 65816 instruction set reserves an opcode for the 65832, so I
> presume the chip doesn't actually have a 32bit mode switch, but rather
just
> behaves 32 bit like when an instruction comes along that has the reserved
> opcode as the first byte of it's instruction.
>
> Matt
>
>
>
> --
>               Matt(hew) Jenkins. Computer Science (RMIT Bundoora)
>                            email: mdj@cs.rmit.edu.au
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