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The biggest haul I’ve ever made.


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A good question. It has two video cards but that’s about it. This will need to be overhauled, recapped, cleaned, traces, and re-batteried before I take a look. If anyone knows how to read RAM chips (I don’t, I’m happy to take a look.

 

Ill start a separate resto thread on the machine.

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On ‎3‎/‎1‎/‎2020 at 8:20 PM, LaPorta said:

-About 10 Mac 128k/512k/Plus/SE logic boards in various states (I’ll bet all need repairs).

If you have a Mac 128K motherboard, or a 512K motherboard with socketed RAM in that stack, I'd be interested.

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15 minutes ago, Dog Cow said:

If you have a Mac 128K motherboard, or a 512K motherboard with socketed RAM in that stack, I'd be interested.

Tomorrow/this weekend I’ll be rifling through the boards to see what is there and In what quantity. I’ll let you know.

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13 hours ago, LaPorta said:

 If anyone knows how to read RAM chips (I don’t, I’m happy to take a look.

I AltaVistad, and found this:

 

Size or capacity of SIMM


Look at the four digits to the left, these often carry information about the number of bits in the chip. A 4256 indicates 256 K bits arranged in sets of four, for a total of 1 Mb. "1000" indicates 1 MB of bits arranged in one set.

 

With some memory, the last one or two digits may be changed to indicate different kinds of memory; there are 1 MB chips that end with 4256, 4257, and 4258. In this case, round the last digits to an even 256 or thousand. Three-chip SIMMs have two larger chips that are quadruple the capacity of the third chip. The third chip is dedicated to parity data.

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13 hours ago, LaPorta said:

Ill start a separate resto thread on the machine.

It'd be great to see this come back to life! Adam's records indicated that this one needed quite a bit of work (it does not power on currently), but wasn't any more specific than that. Information like this played a significant role in prioritizing what we would attempt to sell and what we would view as a contribution to the community.

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Some of those sales and training CDs and DVDs can be cool.  Lots of product photography, line art, typefaces, presentations, brochures, that sort of thing.  I've seen some with radio ads.  It's been a long time since I've seen one though, so who knows?

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17 hours ago, LaPorta said:

 If anyone knows how to read RAM chips (I don’t, I’m happy to take a look.

 

If you present an image from which we can read the markings on the RAM SIMM chips, we can figure out the capacity from the datasheet(s) for the chips on the SIMM boards.

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RAM chip info in in the new rest thread!

 

I count 10 logic boards: Two 128k, one 512k, five Mac Plus, Two SE, and one SE/30 that it appears someone worked on previously.

 

IMG_4944.thumb.jpg.fc9a47e7102059328a6f13fe7dd17e36.jpg

 

Here's a puzzler to me: what the heck is this contraption?

 

IMG_4943.thumb.jpg.0cd0dd6895efad5d2723ed8bd882097c.jpg

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