Originally Posted by hap
Hmm, wizatron issue could also be due to how the digit leds work. They obviously should take some time to decay so strobing them doesn't look like a flickering disco. Maybe related to that.

TI-1270: do you have the post-acid pic? I can see the microinstructions, but barely see the output pla and main opcode pla.
Yeah, the change to SETR and removal of RSTR may have something to do with it. I still haven't read enough to understand that change yet. I don't have any working TMS-0970s left, but I have a couple of TMS-0980s, which likely output the same. I could do some logic captures if you think it might help.

I uploaded the TI-1270 post-acid pic.

Last edited by R. Belmont; 11/23/14 12:30 AM.