Antique PROM programming algorithm?
I'm trying to get a Sinclair MK14 up and running, and it turns out the PROMs don't contain quite what they should - looks like something's screwed the internal data selectors.
While it'd be easy to stick an eprom on the back with jumper wire, I'd rather use the original prom type if I can - but while I can find the data sheet scattered around the net my google-fu has failed me on the programming details.
If anyone can point me at the right place, I'd be really chuffed... perhaps an old Nat Semi paper TTL databook?
Thanks