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Interesting; that's good to know. Thank you!

Have a 9GB scsi HDD I’m trying to use with a IIsi. I can boot from a CD image on a ZuluSCSI to format and install an OS. When I initialize the drive I get a prompt about volume size, so I create a 1GB volume. It mounts, I install an OS, and then… nothing. It won’t boot from the volume and if I...

Awesome thanks!

Hi; any chance you have a link for that multipack? I’m in the same boat. 😀

Hi, I've got an AppleCD 300i Plus, (Matsushita CR-503-K) in my Quadra 650 which works, but only mostly. It reads cds fine, and will eject the tray when there's a CD in it ok. But if I hit the tray button when the drive is empty, the tray sticks and I have to tap the left side of the tray to get...

You might want to check all the traces going in and out of the onboard RAM; those are used for VRAM. (U[F|G|H|I][6|7]) A lot of people seem to end up having to replace the chips. C9/C10/C11 are required for sound to work; if you're getting anything weird sound-wise, you might have to resolder...

Damn, I'm glad that card still worked after all that time in storage! Nice fix, too!

I ended up replacing my IIsi PSU with the template board from Caymac Vintage, the “Power Up IIsi.” Works great. I only had a 90w PicoATX to use with it (250w is suggested I guess) but it works fine and powers a nubus adapter with an FPU installed. So a big thank you to Caymac is in order. Some...

Shoot, thanks! 🙏 I was going off the old Apple schematics scans. They didn’t have that. 🤓

Basically I'm trying to create a spreadsheet that catalogs which things should be reachable from what, so I can check continuity from each pin of a few core components (CPU/RAM/ROM and a few others) to 3-4 other points, and have a pretty good idea whether traces are broken or not. And then I...

Hi. So, I had a small batch of these made, using the coupons and stuff that pcbway offers new users, it was like $2 each for 10: https://www.bigmessowires.com/2023/09/27/atx-to-mac-10-pin-power-supply-adapter-kit/ I've assembled six of them so far, and they all work in my Quadra, but only one...

I had similar problems and it turned out to be a short. Grab a continuity tester and check to make sure all the adjacent pins on the stuff you soldered don’t have continuity between them. Good luck!

There’s a chip responsible for detecting ram simm size; it was called out in a recent repair video Adrian’s Digital Basement did on YouTube but I don’t remember which one it was. If you zip through his last video on the se/30 he was repairing it’s in the second half I think.

n/m

Cleaning up a bombed SE/30 and there was enough gunk on the ROM that I took it apart to clean it. (As well as ordering a new simm socket for it.) I damaged/tore one (1) solder pad on it, which is actually good for me, and I can bodge it easily enough but can’t figure out where it’s supposed to...

7.1 didn't change the behavior. I found a couple damaged pins on one of the ICs and they were in contact. Tried to bend them back but they broke off so now it doesn't even sort of work. :-( Ashes to ashes I guess. :-(

Thanks! ::grabs magnifying glass::

Three, and I tried in two of the three. In the third the card bumps into the reset switch and doesn’t set right. (It’s loooong.)

Would a problem with that interrupt indicate an issue with the hardware or more likely to be a config problem like an incorrect refresh rate or VGA adapter setting?