Got another Mac for the collection today, a Performa 600CD. It's essentially a middle road between the IIvx and IIvi. It has the 32MHz 030 on a 16MHz bus of the IIvx, but the lack of 32k L2 cache of the IIvi.
I got it locally from the same seller as the PM6100, for €30. He's into old computers, but not Macs, and he sometimes just gets them in lots of various computers, so he just sells them as untested, for parts.
From the ad, I did notice the door of the CD-ROM Drive, which is a caddy loader, was down, yet no caddy was inserted. The flap has gone floppy, so that needs some inspection. The drive is taken out in the pictures, hence the gaping hole where it should be.
The Mac itself wouldn't power up, so I took off the lid. Looking inside the machine, the caps had clearly leaked, as the board had wet spots around the area of the caps. That's at least somewhat positive, as it being fairly fresh means it has had less time to do damage. The traces and IC leads all looked clean underneath, so that's reassuring. The machine had no hard drive or RAM, so I just populated it with four 8MB SIMMs. I also cleaned off the electrolyte, ensuring the EGRET chip was especially thoroughly cleaned. The battery was a Kodak Photolife from 2011, clearly someone has been playing with this machine somewhere in the last decade.
But the big surprise was in the PDS slot, there was some sort of 040 card! On close inspection, it appears identical to a Sonnet Presto, and judging by the oscillator, it's a 40MHz model. The heatsink is firmly glued on, but if Wikipedia is to believed, 40MHz 68LC040s didn't exist until 2000, meaning it should have the full 040 on it. The weird thing is that the "Sonnet Technologies" branding on the back is instead "Donoho Design Group". Looking them up, they're an iPhone and iPad consultancy nowadays, but their About page does mention their work on "TokaMac" accelerators. I wonder, did they simply rebrand Sonnet cards, or did Sonnet rebrand their cards for the Prestos?
After letting it dry, I gave it another shot, and there you have it, it's booting to a floppy! There was no sound, but I then noticed it had no speaker either, so that will have to be replaced. I did get sound out of headphones, so the DFAC audio IC on this one is thankfully still working.
For now, I've put in the ProDrive 425i from my dead Quadra 700, by just screwing it to the frame of the computer itself, as it's missing the hard drive frame. It sits kind of crooked, but is firmly in place. It still needs a good cleaning, inside and out, a recap, some RAM, a HDD solution like a SCSI2SD, a speaker, and work on the CD Drive as well as a caddy, but this will be a nice piece for the collection... and yet another project