I can't see what it is you attached in the last post. I neglected to mention that the APU1 won't program the "UV erase" EPROMs well at least from my experience. The PPII didn't have a problem with the difference being APU1 is USB powered and PPII has an external power source. Sorta remember that 2732 needs 25v to program and 2732A needs 21v and pin voltage specifications has no bearing on programming. Boosting USB 5v to program something that requires 21-25v could be troublesome. Any reason not to delve into EEPROMs? Once you take the plunge, you'll never go back.