epitaxial

I removed the front panel and can get a better look at the insides. The power supply is putting out +5 and +12 just fine. I guess that feeds the TI but still can't easily tell. The hard drive is a 20mb MFM drive cabled to a Winchester controller. On the same bus is an RS232 adapter. The drive spins up fine but I was told that imaging MFM drives is difficult because of how the controller handles all the low level signals. The board with the orange sticker on the chip is the adapter for using IBM keyboards.

Hello all. I'm the poster from vcfed and owner of this. If you have any questions I'll be happy to answer them. First of all let me say no the keyboard is not going on eBay. I'm into vintage computers but never had any experience with anything from TI. Old UNIX boxes are more my thing. Did some googling of Rob Ekl and it turns up this obituary https://www.shirleyfuneralhome.com/obituaries/Frances-M-Ekl?obId=10847954 Then if you google Joseph John Ekl you see his obituary https://www.legacy.com/obituaries/triblive-tribune-review/obituary.aspx?n=joseph-j-ekl&pid=185397845&fhid=17246 where it says he was a computer club member. The estate sale was in this area so it looks like Rob was a nickname.