One of the things you need to know about each ROM you are going to program is the Vpp Voltage (Programming Voltage).

Here's a great chart on the different Vpp's needed for the different chips, by Manufacturer...

http://web.telia.com/~u85920178/eprom/eprom-dat.htm

One that is not listed is the TMS2532... It uses 25V for Vpp.

Also, the 27010 -> 27080 (271001 -> 278001) use 12.5V for Vpp regardless of the manufacturer.


Pay special attention to the "A" and "B" that is after some of the chip numbers... ie: Intel 2732, 2732A and 2732B... these 3 chips are the same, but use a different Vpp for programming!


There are other parameters to consider as well, which I will explain shortly...