The Macintosh Color Classic was the color all-in-one Mac in the early 1990's

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I see some empty slot on the logic board. What's it for and ..

I see some empty slot on the logic board. What's it for and can I stil find one somewhere?

The mac is working fine. The old caps are still in place but I believe is has not had many working hours. So I am not planning to replace them right away.

I am momentarely blasting the cover with thickened waterperoxide and UV licht. It is getting it's original coulor back. If someone wants to know how that goes just ask me.

I ordered two memory slots and a video upgrade card and a battery for 56 euro total but I have to pay 50 for postage too. So is any body has tips they want to share, I am all ears.

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Here's the full specs of your system: Macintosh Color Classic


It reads (4) Socket for the optioneel 68882 math coprocessor

so your answer is good. Thanks


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I think you're talking about the Processor Direct Slot (LC-PDS)

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@danj is this different from a NuBus slot? I don't remember.


Yes, it was proprietary to Apple.

If I remember it came out just a bit before NuBus and was intended to be for the small systems. There where two versions of the slot depending on the PowerPC chip in the system. Again if I remember correctly the first was an 8bit bus and the second 16bit wide bus.


I want to post a photo of the motherboard but I don't see that option. But I found this pictur online

It is the empty square in top left from the middle


Here's a better link: Old Computers - Then click on the motherboard to get the full rundown

The square socket is for the optional 68882 math coprocessor


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Rufus Kohn will be eternally grateful.
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