22 Apr
2005
22 Apr
'05
4:47 p.m.
Tony wrote:
However, the PALs in an 11/730 are not protected (the
security fuse is
intact), and when I had access to a good PAL programmer, I actually
desoldered all the PALs in my 11/730 and read them out. So the PAL
equations would be trivial to reconstruct given the schematics, which are
on Manx.
There is a DOS executable floating around called JED2EQN that does this
for the simple (early) PALs. It was part of the National Semiconductor
Opal Jr. package. A version of that is on my PALASM web page, near
the bottom.
http://www.brouhaha.com/~eric/retrocomputing/mmi/palasm/
Note that I have not run ANY of these binary-only tools, and offer no
warranty for them. Caveat emptor! (For that matter, I don't offer any
warranty for the Fortran versions, nor for any of the software that I've
written.)
Eric