I did some hunting on that chip. It looks like it MIGHT be a chip that gets reloaded on power-up rather than having the code programmed into nonvolatile memory. Not sure of that.
On second read of part of the data sheet, the chip is rated for up to 100 R/W cycles of the internal memory so it may be a factory programmed part that Lattice programmed for Lexicon. That may be what the number on it means. The data is supposed to be stable for 20 years but all bets are off when power supplies go bad.
Here is a link to a data sheet on a similar chip. It may be the same thing but this one is a GAL 16V8D P/N rather than 16V8R.
The RV-8 is an insanely complex system. The clocks alone are really hard to understand and I used to do this stuff for a living.
On second read of part of the data sheet, the chip is rated for up to 100 R/W cycles of the internal memory so it may be a factory programmed part that Lattice programmed for Lexicon. That may be what the number on it means. The data is supposed to be stable for 20 years but all bets are off when power supplies go bad.
Here is a link to a data sheet on a similar chip. It may be the same thing but this one is a GAL 16V8D P/N rather than 16V8R.
The RV-8 is an insanely complex system. The clocks alone are really hard to understand and I used to do this stuff for a living.
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