Whenever the GDEV resets, I can read the following text off the serial port:
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Dolphin OS $Revision: 36 $ Kernel build : May 28 2001 14:21:39 Console Type : Development HW3 Memory 48 MB Arena : 0x8156bf60 - 0x81700000 bootrom Bus Clock = 162000000 Hz Core Clock = 486000000 Hz
I also installed Codewarrior and built a sample app, but when I tried to debug it on the GDEV, Codewarrior popped up a dialog that said something about waiting for the debug monitor to come up, and never got any farther than that. As far as I could tell, nothing was running on the GDEV.
This is very frustrating! I'd love to find someone with some working hardware to compare notes with. My gut right now thinks it is the ODEM card, but it is hard to find any details about it. For example, there's nine LEDs on the back of my card that all light up steady when the card is running, and I don't know what their purpose is. They are labeled D0-D7, and D10. When I looked up the reported device id I got from Device Manager, it said it belonged to an FPGA development board, and when I looked up the chips on the card, there are two big FPGA chips. Which makes sense, from what little I know about electrical engineering, you aren't going to make custom ASICs for a product that will only be sold to a very small number of developers, and there's probably not an off the shelf solution for what this does.
Here's some detailed pics of the ODEM card: