Ah, so the greyed out area is just leftover stuff read out previously from another chip. Got it, thanks. I did see the legend, just didn't see any entry for grey. I was able to program a few 27C512s successfully yesterday and they are working fine. Will try a TMS2564 as soon as I get my new EPROMs.

I understand now. So I just read a TMS27128, and viewing the buffer, it is greyed out after address 03FF0, but there is still data written in the greyed out area.It is a duplicate copy of that written in the first half. The highlight legend shows other colors, but not grey. What does this signify? T...

I did discover that about the doubling and even quadrupling (512s) during some marathon googling this weekend, thanks. So I guess my number one question currently is whether I should use the device selection for the ST device that it has written on top of it and disable the ID, or if I should use th...

Upon a little further reading, I've found that there is a plain "TI 27128" in the device selection menu and am assuming that it's what I needed to be looking for. With this selected in the menu, I am reading the EPROM and showing addresses programmed only from 2000 and up, but it's only us...

New question, but related. I've just discovered that some of the EPROMs are TMS27128JL-25 instead of TMS2564. The programmer database does not seem to have an entry for these that is an exact match. Are they compatible with the 40Pro? I believe they were programmed in a fashion to replace the origin...

I got into the demo mode on the software and figured that out yesterday. Thank you for the reply anyway. I will be trying my first few EPROMs sometime this week, hopefully it will be smooth sailing. If not, I may have a few additional questions, thanks.

Hi all, I just ordered an S40 Pro and need to program some TI TMS2564 EPROMs. The programmer is still in the mail. Can I do this directly in the programmer or do I need any sort of adapter? I am still new to this. Thanks for any advice.