68kMLA Classic Interface

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IIci issues
Posted by: IIsi on 2008-11-24 13:15:02
My offer still stands for the IIci board, however it has damage to the 68030 chip that although it does not affect functionality it is rather ugly. I nearly sheared off an address pin while cleaning corrosion off the chip. (Yes Bunsen I know I know, it was an accident! I am very careful. 🙂 ) It still works but is bent and looks awful. If anyone knows how to dry-solder SMT components I can ship them the IIci board plus a spare unused 68030FE33B chip. Other than this defect, the board is spotless and in great shape.

This is an excellent video on how to solder SMT stuff, even absurdly large chips:

http://www.curiousinventor.com/guides/Surface_Mount_Soldering
Posted by: JDW on 2009-01-30 06:34:20
Because no ROM SIMM was ever made for the IIci, the on-board ROM must be selected with a jumper at W1.
Apart from the IIci ROM SIMM made by Gamba and Trag a few years ago...
Here's the actual Gamba IIci ROM SIMM. I would like to have one of these, just to see how the SE/30 acts with and without various 030 and 040 accelerators. I found the IIsi and IIfx ROMs to have trouble with the Daystar Turbo 040 insofar as the internal floppy would stop reading/writing 1.4MB disks (although it could still handle 400k/800k disks just fine, and the Turbo 040 works fine with 1.4MB disks if the stock SE/30 ROM is used -- but the stock ROM prevents running of OS 7.6.1 or 8.1).

I also found this IIci Apple Developer Technote to be interesting. Figure 1-2 on page 7 of that PDF mentions the optional ROM SIMM can be anywhere from 0.5MB to 32MB in size!
Posted by: trag on 2009-02-11 13:12:27
It still works but is bent and looks awful. If anyone knows how to dry-solder SMT components I can ship them the IIci board plus a spare unused 68030FE33B chip. Other than this defect, the board is spotless and in great shape.
Are you saying that if someone wants to buy your board you can include an extra 68030 chip, or are you saying that you would like someone to replace the chip for your use?

If the latter, I'd recommend leaving it alone as long as it is functional. I could do the replacement (if I could ever find the top of my desk), but there's always some non-zero chance of failure in such a replacement--not to mention uncertainty as to whether a new component actually is a functional component. The bad possibilities may have a low probability, but there are risks.
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