| Electronics > Projects, Designs, and Technical Stuff |
| Looking for an algorithm to help deciper the contents of a PAL |
| << < (4/4) |
| 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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