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GAL replacing with combinational gates

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john.stm

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trans_switch.JPGHI every one ,

i need a samll help ..

i want to replace my GAL device with combinational gates .

The GAL needs a go impulse to perform its logic .. then it does some logic function and gives it output to .. i have developed this logic but stuck with two big issues .

1) GAL uses some kind of register memory .. how to realise that in real life .. (with ff, latch or register , d -ff) ?

2) my combinational gates has to function only when at the positive edge of my go impulse ? how to do this part in real life ?

thanks in advance ...

- - - Updated - - -

sorry wrong picture . this is the right picture
 

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