lomdar67

Thanks so much for your help. I have contacted Dragonbox before and I can probably sent the console and the card to them. I will post the outcome here. Best regards, Michael

I have continuity between pin 24 on Jerry and pin 47 on Tom. I can also read the signal on pin 24/Jerry and 47/ Tom when I try to load a rom…

Hello, back again. I have continuity between EINT0 and pin 36 on Jerry and I can read the signal on pin 36 on Jerry when I try to load a Rom. Would be really great if you could help me through the process finding the problem. Best regards, Michael

Thanks for the picture!

Okay, thanks. I‘ll try this tomorrow. I just did a quick check. Jerry is the DSP, right? I can‘t find any indication on the board where pin one is…

Sorry for the delay. I was able to lend a oscilloscope. And I definitively get a signal on EINT0 when I try to load a ROM, but nothing on EINT1. Do I have to get a interrupt signal on both? Best regards, Michael

Yes you are right. Still can't imagine that there is something wrong with the console. It's in such a good shape... Could it be a hardware revision problem? Maybe some incompatibility with certain board revisions? Could we analyse the problem with something relatively cheap like this here: https://www.amazon.com/-/us/dp/B07C3F5BP3/ or this: https://www.amazon.com/-/de/dp/B06WW6QNFZ ? I case I would buy one of these (they are much cheaper here in Europe), would you be willing to help me analyse the problem? I've never worked with an oscilloscope before... Best regards, Michael

Thanks for your help. Unfortunately I neither have a second Jaguar nor an oscilloscope. There is no movement at all on the loading bar when loading a Rom. I only have movement on the bar when the directory contents is loading. I can't imagine that the console is faulty I have quite e few consoles and have never seen on in such a good condition as the Jaguar (from an optical view). But sometime looks can deceive...

I checked all connections with the GameDrive plugged in, to the back of the PCB where the connector is soldered in. So connection from the GameDrive to the back of the PCB are all fine. If there is a problem with a interrupt line it must be on the PCB. I checked EINT0 and IENT1 twice, there is a connection from the GameDrive to the PCB (can you please confirm that the yellowed market connections are the correct ones). If I have to check EINT0 and EINT1 along the PCB, can you show me where to check for continuity on the PCB?

Thanks for the reply. PCB seems fine to me. Can you be more specific which pins/traces to check? Best regrads, Michael

I have an Atari Jaguar in nearly mint condition. It's a Rev H board and it works fine with my original cartridges. The cartridge slot is fine, not bent pins. After waiting for quit some time a got my GameDrive from DragonBox, it's a Rev 1.2. I've installed the latest GameDrive firmware and I can browse to the contents on the sd-card. But when I try to load any Rom, I get the "Loading ROM..." popup and nothing else happens. The progress bar does not move forward and the console freezes. I tried several sd-cards (I only have SanDisk at the moment) with different sizes. I also tried Roms, Homebrew Roms and jcd files. Nothing is loading. I would appreciate any help to find the problem. Best regards, Michael