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Just following up for the sake of completeness... The Cypress Cypress CY3670 programmer with CY3095 adapter showed up on Ebay for $25 + shipping. Needless to say, I bought it immediately. I haven't tested it yet though. It looks pristine, although the pins for one of the sockets got...

You might also check (IIRC) Phoenix Connectors. I don't have the link available at the moment and may be mis-remembering the name, but Google will probably get you there. Later Edit: This posting https://tinkerdifferent.com/threads/macintosh-connector-part-numbers.135/ lists the...

My 13-year-old water heater just (late Dec.) blew its drain valve clean out. Happily, the garage drains well. Temporarily took out the adjacent furnace the day before temperatures plunged to 15 degress F. Looking at my records, the previous water heater lasted about 13 years also. I think...

Thank you for that, @Kai Robinson While reading Part 1 I kept wondering why the author and his predecessor didn't use the Serial pins on the ATTiny. Heh, then I read Part 2. :)

You can use 100 uF/10V which is pretty commonly available and removes the uncertainty about 6V vs. 6.3V.

I keep a box of modeling clay in a zip lock bag next to my soldering station because of the type of problem you had. The same thing happened to me the first time I used hot air to desolder. Now days, I roll little snakes of modeling clay and press them on rows of surrounding components that...

72-pin SIMM on 128K <=> Plus doesn't make as much sense as on SE/30, because memory usage on the 128K/Plus is only 16 bits wide and 72 pin SIMM is 32 bits wide. It would make more sense to just populate with fewer, higher density chips, assuming the refresh circuitry is compatible. Four 2M X...

You had the ceramic package 68000 on your 512K? The ceramic package is flatter than the plastic package and doesn't fit the Killy clip properly.

Newlife/NewBridge had a 128KE/512KE upgrade board with eight (8) SIMM sockets on board and a plethora of jumpers for configuring the RAM configuration. The RAM limit was still 4MB, but if one had a bunch of 256K SIMMs laying around, one could use those in the upgrade. And the Mac's memory...

I think the issue is that it is not a proper replacement for the Mac II family, but I think Kai knows with more confidence. Above, max1zzz stated that the D1307 was a replacement for the clock in the Mac II family (unless I misunderstood) and that is what triggered the flurry. D1307 looks...

Perhaps put plated vias in the pads, so if they fail to make connection, you can solder down the hole? It reduces your pad to pad area but provides a more reliable method of insuring solder contact.

Hmmm. Looks like the DS1388 might work as a replacement -- at least feature-wise. I haven't checked the command structure. It would probably require a GLUE chip in between to translate.

Well now you have you me confused. My notes have a 343-0042-B at UM5 on the IIcx and it is a DIP8. And I have a 3440042B at UK4 for the SE/30 and again a DIP8. But the datasheet you shared clearly shows a PLCC20. Are you able to resolved the confusion? Later: Ah, but looking more closely...

Is that the same as the Apple 343-0042-B, then? That's what I have down for the SE/30 Clock chip, but it is also an 8 pin DIP, and I wouldn't be surprised if Apple just licensed the design and changed the part number. BTW, the link way above is to an Analog Devices part at Digikey who is out...

As I recall there were three or four resistors to move as well in the conversion process. The feature that makes the 6880M unique and wonderful is that it provides RAID support in both OS9 and OSX. In other words, you can create a single RAID (0 or 1) that can be used on both Classic and OSX...

Great work on the IIcis, but more importantly, I'm jealous of your workshop. Looks wonderful.

I think the logic equations for the PLDs (PALs?) are out there. Maybe published in Mactech at some point. I don't know about the IWM. I saw someone claim that Kai had reproduced the SWIM, but I haven't seen any such announcement -- which doesn't mean much given my chronic absence lately...

It wasn't me. Or if you did, you never told me and it never arrived. :)

It might be useful to mention which part of Texas. If he gets to stuff that isn't worth shipping, there might be someone local interested. Texas is a big state.

Hey, jt, sorry if i misunderstood you. Also, I think I mistook who wrote your posting. Bleary brain.