Hi Ethan, Ruud!,
Ethan Dicks wrote:
>
> Ruud... don't pitch those defective 6530s... if it's just the RAM, it might
> be possible to build a board that fits in the 6530 socket that has a
> defective 6530 and an SRAM chip to "fill in" for the defective RAM. It's
> not a general solution as a board that completely emulates a 6530, but
> I suspect it would be easier to make (not having to provide I/O...)
BTW, I wonder if it was possible to replace these simple but out of
production SSI and MSI port components by some kind of programmable
logic. ...Well, better said: if it's worth to do it. But I suspect it's
getting to be reasonable.
The 6530 looks pretty simple (except for its internal RAM and ROM that
could occupy lots of CLBs -- still some 100 bytes of RAM could probably
fit even in a CPLD). I know, Xilinx offers flash based, 3.3V / 5V CPLDs.
These chips aren't even expensive (few dollars, depending on
capabilities and packaging).
Best regards,
Levente
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