[Coco] 6821 and 6551 compatible parts @ 14Mhz Bus Speed

[Joel Ewy]

coco at yourdvd.net wrote:
> I was browsing around the Western Design Center (for those who don't
> remember, they created the 65C816 16-bit version of the 6502, which is
> what made the Apple IIgs possible). They still manufacture components,
> and so I thought perhaps their 6521 PIA would come in handy as CoCo
> replacement parts and their 6551 for upgrading my RS-232 Program Pak
> and Modem Pak to 2-mhz operation. I was surprised to find that their
> version of these parts are rated at 14Mhz, which makes since, as the
> 65C816 is a 14Mhz part. Their prices are reasonable for brand-new
> parts. Have a look:
> http://www.65c816.com
>   
Looks as if they're even pin-compatible.  Nice!  Even makes me wonder
what I could do with some of the spare 68000 chips I have lying around...
> Now that's cool :-) Wish I had a 14Mhz CoCo :-(    -robert
>   
FPGA -- it can be done.  FPGA -- it can be done.  FPGA -- it can be
done.  FPGA -- it can be done...
> (have these lil' ASCII faces become an annoyance yet - I seem to be
> using them a lot.....)
>
>   
About to drive me berzerk!  ;-)

JCE
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