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Intellivision from Brazil with faulty GROM


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If you look at an intellivision schematic and grom data sheet you'll see that the grom has to read multiplexed data/address lines and also provide addressing to the gram.  You could probably use an eprom if you also provide the other functions a grom chip performs.

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1 hour ago, mr_me said:

If you look at an intellivision schematic and grom data sheet you'll see that the grom has to read multiplexed data/address lines and also provide addressing to the gram.  You could probably use an eprom if you also provide the other functions a grom chip performs.

And no idea of which eprom I can use?

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16 minutes ago, mr_me said:

If you create the other circuitry you could probably use any eprom.  It's how some old prototype cartridges worked.

 

There are people here that might have spare grom chips, how do you know it's the grom that is bad?

I use other Intellivision with same board to test the ICs from mine.

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