Thayer's Quest works!!

Thanks to Shaun Wood, my Thayer's Quest is now working once again. I was able to hook Dexter up to it and debug my problem and now it is working. The only thing left to do with Thayer's Quest is make the left/right audio channel stuff work properly which is probably what I'll work on next since I've got momentum.

Dexter DIAGNOSE button working!I

I've updated the Dexter rev2 firmware to support the DIAGNOSE button which should make troubleshooting problems a bit easier.

Dexter DIAGNOSE button coming soon

The DIAGNOSE button on the rev2 Dexter boards has not been hooked up. I am about to change that so that you can press the DIGANOSE button and get verbose logging. This may help with troubleshooting problems with games like Thayer's Quest.

Thayer's Quest sounding good

It sounds like Shaun Wood has made some progress fixing my Thayer's Quest board. This is great news. If he is successful, then I should be able to fix Dexter to work with Thayer's Quest.

Thayer's Quest sent off for repair

I finally stopped procrastinating and sent off my Thayer's Quest boardset (and disc) for repairs. My fingers are crossed!

Thayer's Quest blockage (and detailed pics)

Welp, I erased the original TQ EPROMs and reprogrammed them and it did not solve the problem. So I am stumped. This is very discouraging. I did take a bunch of pictures of my TQ board so that I don't have to take the top board off to see what's on the bottom board again (it is a huge pain to get it back together). This means that my fix for Thayer's Quest on Dexter is delayed indefinitely. :(

EPROM programmer arrived

The EPROM programmer has arrived as you can see. That's the good news. The bad news is I read both of my Thayer's Quest EPROMs and they had no errors on them. They matched the Thayer's Quest ROM images that everyone has. Oddly enough, they were placed on the board as you see them in the pictures; without proper protection from UV light. So may last hope is to try to erase them and reprogram them and see if that changes anything. I've got a sinking feeling in my stomach that it won't make any difference though.