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PROM to PAL/GAL converter

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sadat007

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Hi,
I need to replace PROMs on a board to PAL or GAL. Any one can help?
thanks
sadat007
 

AndaMan

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Please give more specific information how many input/output and PAL/GAL device number.
PAL/GAL logic is only subset of PROM not all design can transfer from PROM to PAL/GAL.
 

sadat007

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Hi,
Following are 2 pics of the PROMS with some information.
I have the working PROMS so I can read the table inside, I need a program that convert it for GALs/PALs. Rerouting the connections will not be problem, I will do any way.

93_1167578149.GIF

93_1167578149.GIF


83_1167578579.GIF

83_1167578579.GIF


Thanks
sadat007
 

echo47

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You need to do logic minimization of the PROM data, and then see if the equations will fit into a PAL/GAL.

Here are two DOS programs that input a truth table and output minimized logic equations.
https://www.dei.isep.ipp.pt/~acc/bfunc/

You can probably find other similar programs. I read somewhere that Maple and Electronic Workbench can do it too. Your PAL/GAL manufacturer my have development tools with similar capability.
 

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