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July 19, 2018 at 11:39 am #149739
Is it possible to obtain programmed 74S288 PROMs for the H949 Harmonizer?. I have an H949 in which pin4 of PROM #8 is giving a bogus output. Alternatively, armed with a binary, I could create my own using a fast EPROM of flash chip.
Alas, we have neither binaries nor spare proms – these will all have been lost or hidden long ago. Hopefully someone somewhere has a parts unit ..