ROM diagnostic mode on a Wombat Quadra?

The problem I’ve had with the serial Diagnostics mode, specifically with my IIfx, is there isn’t really enough (any?) documentation available to be able to do anything with it. The one single piece of documentation available online was based on a different/older machine. The response codes the IIfx gives, for example, are a different length and don’t match up with anything I can find.

nathall said:

The problem I’ve had with the serial Diagnostics mode, specifically with my IIfx, is there isn’t really enough (any?) documentation available to be able to do anything with it. The one single piece of documentation available online was based on a different/older machine. The response codes the IIfx gives, for example, are a different length and don’t match up with anything I can find.

Click to expand...

It's very low level and pretty difficult to use. That's exactly why I was interested in it (well, that and I'd really like to find out what's wrong with my on-board ethernet and the SONIC self-tests should help).

I wanted to replicate this with QEMU for easier local experimentation and it turns out it's stupidly easy from a terminal. Using a q800 machine, set it to 1024MiB RAM with -m 1024. This will cause it to crash on boot, which we want. Add the following arguments: -serial mon:stdio -nographic. The machine will boot and though you'll see no output or QEMU window, you should hear it chime. After a few seconds it will sound the chimes of death. When the sound finishes playing, you can now type diagnostics into the running terminal (it may also print the *APPLE* string).

nathall said:

The problem I’ve had with the serial Diagnostics mode, specifically with my IIfx, is there isn’t really enough (any?) documentation available to be able to do anything with it. The one single piece of documentation available online was based on a different/older machine. The response codes the IIfx gives, for example, are a different length and don’t match up with anything I can find.

Click to expand...

What test info are you looking for? I can provide info for most of them.

SuperSVGA said:

What test info are you looking for? I can provide info for most of them.

Click to expand...

Thanks, it’s been three or four years since I tried it and gave up. I’ll see if I have time through the holidays here to try it again and I’ll give you some specifics.