Electronics > Projects, Designs, and Technical Stuff
Looking for an algorithm to help deciper the contents of a PAL
NivagSwerdna:
--- Quote from: FenTiger on February 02, 2020, 07:23:58 pm ---I've used Espresso for analysing truth tables like this before.
https://en.m.wikipedia.org/wiki/Espresso_heuristic_logic_minimizer
--- End quote ---
Thanks for that reference. I haven't come across this before; also Logic Friday. :-+
rstofer:
Great tools! Way better than rolling your own.
I may download LogicFriday just to see if it will produce a NAND only (or NOR only) solution.
intabits:
--- Quote from: rstofer on February 03, 2020, 05:18:55 pm ---Great tools! Way better than rolling your own.
I may download LogicFriday just to see if it will produce a NAND only (or NOR only) solution.
--- End quote ---
Yes, it can:-
iMo:
Mind propagation delays :D
up8051:
After some reverse engineering, based on the posted file:
/FDCWR = PIN8 * /EF3X * /E * /RW
+ /PIN8 * RW
/FDCRD = PIN8 * /EF3X * /E * RW
+ /PIN8 * /RW
/BENQ = A0 * MemEna * DGrnt * /E
/BENE = /A0 * MemEna * DGrnt * /E
/CAS0 = /A0 * /A15 * MemEna * DGrnt * Q4 * /E
/CAS1 = A0 * /A15 * MemEna * DGrnt * Q4 * /E
/CAS2 = /A0 * A15 * MemEna * DGrnt * Q4 * /E
+ Q4 * E
/CAS3 = A0 * A15 * MemEna * DGrnt * Q4 * /E
+ Q4 * E
This would still need to be tested.
Regards,
up8051 aka JarekC.DIY
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