Recent content by eharmon

If I remember right, in the ROM thread we decided the Radius ROM (@2.0) should perform the same as the AC ROM with the latest Radius extensions installed on PPC. So you should be fine.

I found the docs, it's System Update 3.0 that corrects the issue with the Basic Color Monitor and some VGA monitors:

I can try to dig up the docs this weekend, but that sounds familiar -- I think there was a race condition in the system initialization that could cause it to stick in SoG mode. I believe that was fixed later. What OS are you running? Do you have the Quadra monitors extension installed? I think...

The Radius card should be a QuickColor if you can find those ROMs. But without the ARM processor it's not gonna go far.

I believe when the card is disabled there's no way to see it on the bus. As soon as you hear the standard Quadra/Centris beep, you know it's allowed the 68k to take control and loaded it's standard ROM. To do so on the pane you're looking at, it would need to have its DeclROM exposed and I...

This is awesome. For anyone a fan of Audio Science Review these charts are a fun comparison. How far we've come! Now I just want one even more after missing one go for $65 recently :(.

Nope, that doesn't work any better. It displays the happy Mac, then goes to a grey screen, and hangs. I'm not convinced this works despite the internet saying it does...

Yeah that's exactly what I'm using and it's wonderful. I can't, however, seem to get 9.1 to work, though it seems like theoretically it should. Not sure why...I'm gonna try changing the gusd's manually and see if that works any better. I also noticed 8.5+ removes the DAFB drivers, and the...

Oh, I only know of a single version of the Sonnet enabler, are there multiple? This is specifically the "Sonnet Presto PPC" enabler.

8.5 installer crashed once for me, but it's all been good since.

After more trial-and-error, the answer appears to be to do a clean install of 8.6 instead of an upgrade.

It's not so slow, a PS2 driver was written to use it's memory card slot SPI to speak directly to SD cards: https://www.psx-place.com/threads/mx4sio-sio2sd-sd-card-adapter-and-sd-driver-for-the-ps2-sio2-interface.29210/ Does > 5MB/s which isn't bad at all, all things considered.

I've been using the Sonnet 8.5 enabler to run 8.5 on my Power PC upgraded Quadra, and it seems to run well enough. So I figured I'd give 8.6 a try, but after running the upgrade installer and rebooting the machine just dies with an "illegal instruction" on boot. Quickly, and even with no...

Interesting, the 166MHz ROM is checksum 838C0831. I don't think that's a previously known dump, at least!

You can duplicate it with a test clip and a fixed or variable oscillator, if you don't want to do any soldering. I have an example of how to do it with the spicy-o-clock, which gives you better tuning than the New Tech, here: https://eharmon.net/retro/macintosh/spicy-o-clip/ If you just want to...