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Old 29th Oct 2017, 11:26 pm   #19
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,484
Default Re: Nascom repair - Looking for clues please

Re: EPROMs, can your programmer 'do' EEPROMs? I have used a Winbond 27E512 EEPROM for this sort of thing in the past, with an adaptor similar to those you are using already to make your 2716s look like older/ smaller devices.

This type of EEPROM behaves like an EPROM in read mode, but can be erased and reprogrammed in seconds, unlike conventional EPROMs.

I might be able to find you a 27E512 if your programmer can handle them, or maybe you have something suitable already?
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