Re: APPLE ][ Clone-Project?

[salfter@salfter.dyndns.org (Scott Alfter)]

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In article <20020129134755.15927.00000056@mb-fo.aol.com>,
Michael J. Mahon <mjmahon@aol.com> wrote:
>E.-R. Bruecklmeier suggested:
>>Linards Ticmanis schrieb:
>>> I don't think there is a free 6502 core for FPGAs that has original
>>> cycle times, so I assume you'd have to buy one (expensive) or use a real
>>> 6502 chip (fine, but a bit hard to get, and it makes your design more
>>> complicated.)
>>
>>http://www.free-ip.com/6502/
>
>A nice core, but as Linards suggested, the cycle counts are off.

As noted on the website, BCD arithmetic isn't implemented either.  I don't
know offhand how much software uses BCD arithmetic (in nearly 17 years with
the II, I've never used it), but anything that tried it would get wedged on
this core.

  _/_
 / v \  Scott Alfter (salfter@salfter.dyndns.org)
(IIGS(  http://salfter.dyndns.org
 \_^_/  rm -rf /bin/laden
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