I seen your repository a while ago and was thoroughly impressed, though this was before I had the tapes or a terminal. I'll have to check it out further. Thanks for reminding me about it. Also thanks for the link to the 4041, I sent an inquiry.
On the belts, I've seen people 3d printing tape belts for other kinds of tape players with flexible TPU filament. Which is pretty cool, probably will take quite a bit of testing with different durometers/lengths/widths. If all else fails, this is definitely an option to look into.
From what I've read the 4200s are upgraded and rebadged 4100 terminals. The only real difference is a higher resolution and more performance. The 4200s have modified internals that integrated a bunch of logic into asics on a single board and some have larger memory. 4200's are fully compliant with 4100 stuff, so it's likely I can use the ATOM/EZ-TEST, I'll definitely have to try it if I can acquire that 4041. The terminal I have access to is a 9201T which is just a rebadged 4205 that was dedicated to be used with the DAS9200, although I don't have a keyboard for it, which is problematic. Maybe it's possible to take inspiration from your keyboard interface and build a kind of emulated keyboard for Tek terminals, as i'm sure that would be useful for others. Seems like the terminal keyboards are more rare than the terminals themselves, which is unsurprising.
I originally got the tapes, because I figured I could use the EZ-TEST tapes to bypass having the EZ-TEST PC software, which is basically non-existent at this point. The 4200 Mod tapes I've been told are largely the same as the non-4200 Mod EZ-TEST tapes but have DAS9200 support among other machines. They claimed the mod tapes have the DAS9200's Tek Codes and Standards for the 8150 Test System Interface but couldn't confirm it and might have been misremembering. I know the EZ-TEST tapes you have backed up have DAS9100 support, but unfortunately no DAS9200 support. So it's very possible these mod tapes have what I'm looking for. The TSI 8150 codes/standards are really what I need from the tapes, as it's possible to talk with any TSI 8150 capable Tek machine provided you have the TSI 8150 codes/standards without using any EZ-TEST at all, and likely is the most future proofed option.
Thanks for the reply!
