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Page is updated with huge 600dpi scans of the disks. They may take a bit to load. The Disk Copy images now live inside a MacZip archive, preserving the resource forks. You can click "View Contents" on the zip and download individual images if you'd like.

Best WWW browser for Mac Plus?

I don't think the resource fork is needed for these images. Why would you need the checksum? What you get from the Internet Archive page is a verbatim copy of the floppies (I checked the hashes). I chose to present the images this way for easier handling outside of classic Mac OS. Though, I...

The EDUCOMP diskettes are now available on the Internet Archive, saved for posterity. https://archive.org/details/educomp-stacks I used DiskDup Pro 1.0.3 on my Mac Plus to image the floppies, saving in Disk Copy 4.2 format with all bad sectors included. Next, I put my BlueSCSI's microSD card in...

I tried SFplay on a Mac Plus running System 7.1.2, with and without the Sound Manager and it'll launch and "open" aiff files but won't play them. The same aiff files play fine inside SoundEdit.

how 2 fix?

What chip programmer do you recommend for minting custom Mac Plus ROMs? A ROMinator is overkill.

I do not know anything about this monitor BUT I'd recommend reading Sam Goldwasser's monitor repair FAQ if you haven't already. Videokarma.org also has a lot of old school CRT techs who can help out. It takes a few days to get new accounts approved there though.

Do I need a SCSI terminator for the Apple HD SC if it is the only device on the SCSI bus, and the Mac Plus it is connected to has the termination power diode installed?

If it works it works! Everything else doesn't really matter does it I don't know if it is. I've never heard anything like that before. All I know is that the 1.44MB floppies have higher coercivity than the lower density disks, so extra magnetic force is needed when writing to a 1.44MB floppy.

Is it possible to install a Sony MP-F75W (SuperDrive) circuit board in a MP-F51W (800k) drive? (to convert 800k drive to a SuperDrive.) Since I have a SuperDrive with bent heads & a working 800k drive

Next step is to use my Mac Plus to see which HyperCard stacks are on the disks and [if they're/how many are] already on the Internet Archive collection. Instead of using a dedicated diskette backup device like Greaseweazle I'm thinking of just making Disk Copy images on the Mac Plus and...

If I were you I'd jumper the soft power pin to see if it starts up at least, then make sure there aren't any crazy voltages on any of the power rails

Yes that's the one.

I have come into possession of twenty 800k floppy disks from EDUCOMP which appear to contain various HyperCard stacks. I'd won them at auction on eBay originally as a source for cheap 800k diskettes to use with a Mac Plus, but now I see these may contain software that hasn't been archived yet...

I narrowed down the RAM issue to a single bad SIMM. It was the one marked NMBS at the bottom of the picture with a serial no. ending with 649. The four NMBS SIMMs are oddly 2304K each - or 2MB + an extra 256K. I wouldn't bother doing surgery on a single SIMM. Where can I get new SIMMs on the...

Ok it works now. RAM was the problem!

Yeah that's what I did on bank A. Let's try bank B now

NuBus card arrived, I plugged it in and still get the death chime. I don't know if the problem lies with the card or the logic board. I feel the chips getting warm on the card though so it must be doing something. Also, I haven't tested the power supply under load yet. Will do next. I read...

No, of course I did through-hole. I'm sure they'd break off fast if they were only connected on the surface! I have a Radius PrecisionColor 8-24X coming soon (totally not flexing!!). We'll see if the logic board works then.