I teach a hands-on computer architecture course in which the students burn their programs onto an EPROM with a commerical PROM burner. The instructions are read by a low-speed TTL computer they build. I started with the 27C256 EPROM but switched to the 29C256 EEPROM, which has now gotten hard to find.
Can anyone recommend an EEPROM (I'm sick of UV erasers) that would be a good replacement? Specifically, it should be reasonably priced, reliable, easily available and likely to remain so. It doesn't need to be pin-compatible, although that would be nice. I'd be happy with as few as 8 address bits (we use two LS163s for the PC), although I doubt anyone makes something that small. I also don't care about speed. Robustness to student wiring mistakes would be great. (All of the EPROMs have seemed pretty good for this.) Would the 28C family be a good place to look?
We have an Andromeda Labs PROM burner, which supports lots of devices.
Added detail: I've been using the 28-pin DIP package.