Mac PALs (was: Interested in learning 68000 hard/soft) - test-drb@ccmp.vtda.org

21 Jun 2012

Hi Jecel and all

...
 Back in 2005 someone posted the sources for all the
PALs, I looked at
them, but didn't save a local copy. A quick search only showed the
source for the TSM  (timing state machine) circuit in

 > http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=2…

Kryten saved some of what you posted, but his website also is no more. I 
sifted through archives, everything I could find as well as my own musings 
are up on

http://www.retro.co.za/ccc/mac/ReverseEngineering/PALs.html

...
 I did a clean room implementation of the PALs in 1987
that was better
(27% performance increase over the original) but don't have a copy of
the sources (I do have access to a machine with the actual PALs with my
design, however). 
Let's hope you didn't blow the fuses -- if you can, read them and post the 
results?

Thanks

W