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It's also worth noting that if you just need to confirm the functionality of a Plus/128k - there is my SCHWIM https://github.com/DosFox1/Shim-IWM Alternatively, the IWM in the SE is compatible with the Plus and the 128. I even have a feeling an FDHD SWIM will work (just without the ability to...

Earlier in the year, Wendell Sander, the designer of the Apple III and one of Apple's best engineers, did a small custom chip that crammed all the functionality of Woz's disk controller into a single chip. It was called the "IWM" chip, which stood for the "Integrated Woz Machine", since Woz's...

I mean, Woz wasn't really involved in the IWM. It was mainly Dr Wendell Sander.

Looking good! Might be a case of hanging the logic board out of the back of the SE though to test it 😅

I would personally say that there is likely a market for both - full IWM functionality with DCD would be nice, but I'd imagine people would be happy with just floppy support. I mean hey, if you take it from the perspective of people making Macintosh Clones - the less components to deal with the...

Except for the prototype twiggy Macintosh 128Ks! Although they were more like modified twiggy drives than anything.

you would be better off talking to Wendell Sander, or Daniel Kottke!

most of my stuff is on Mastodon, but the half completed project was picked up by Toms Hardware and Apple Insider. My github (https://github.com/DosFox1?tab=repositories) contains info on my SND and Shim-IWM - both of which were used in the ITXplus! Max1zzz is a hardware wizard.

Hey, DosFox here! The Shim-IWM (SCHWIM if you will) was always just meant to bypass the IWM enough to get the system to boot from something else. For saying DB19 connectors are ruddy expensive (let alone the floppy drives!), I felt just a bypass was enough for my Macintosh Plus clone project...

An alternative to the Radius Powerview (which has been partially emulated on the PiSCSI), would be timbuktu - basically screensharing over appletalk. It's pretty neat. https://macintoshgarden.org/apps/timbuktu

I wonder if the PALs have the security fuses blown. I'm guessing as it is a prototype and still very much a development system there is a minor chance that they would still be readable by a programmer. If so, that's probably the only way to get at least some of the PAL equations for the macintosh!

That's a good point, now I should probably try and see if there's another way of testing if software is actually using the 68020

So I recently picked up a very nice example of a dual floppy Macintosh SE which came with a Radius Accelerator 16 installed in it. Alas, the hard drive was dead, so I've installed System 6 and System 7.0.1 on an external scsi2sd to see if I can get it working. Despite installing the radiusware...

The controller has just now been removed and there is no difference in behaviour.

Unfortunately the SCSI controller has been removed but... no dice. Exact same issue.

Ah thanks!

As per the title, I picked up an empty IIci case recently and it looks like all possible sources of a logic board have evaporated! So I don't suppose any one has one knocking around? I would even be happy with a IIcx board. Please let me know!

Ahhh ok, although I would of thought that the floppy drive would of had priority over the scsi bus?

Bit of an interesting problem this one. I recently picked up a Macintosh SE FDHD which had suffered a battery leak, however, the logic board did clean up relatively well and it appears that no traces had been damaged. Powering it up showed signs of life - it would bong, pass the memory check...

If the case of the resistor isn't affected, then it should be fine. If you're worried you can test it with a multimeter to make sure it still acts like a resistor.