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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.

How were blogs superior to newsgroups? Newsgroups were the forums of the early days. And they had the advantage of not being at the whims of their creator for how long they persisted. In theory, everything ever posted in Newsgroups should still be available. Of course, once they lost...

Is the fan management not proper under OS9? Otherwise, how are you liking 9 on the Mini? I have a few G4 Minis and I vastly prefer OS9 to OSX, but there are always compromises with the mods needed to run OS9 on unsupported machines...

Hard to read tone in writing... I'm pretty sure you're having me on, but the tubes were between the back rooms and the front mission control area. So after we made a burrito run we'd send the camera-ready people their burritos through the tubes. Access to the main room was heavily...

I don't remember (probably didn't) seeing such discussion. It seems to me that each bank of four SIMM sockets on the SE/30 could be replaced with a single 64 MB 72-pin SIMM (or one bank of a 128 MB SIMM). I don't know if that would cause any current loading issues. You'd be loading the...

It's more than okay with me. I'm glad to see it preserved. MacGurus might have a copyright depending on the terms of their forums, but I doubt they'll notice and they probably wouldn't mind anyway.

Been using this handle since the 90s...

Heh, I wrote that posting at MacGurus. I was a moderator there a long time ago. I actually still had moderator privileges on their forums until they took them down. There was so much excellent information in those forums.... Sigh. I'm glad that posting was preserved at least. You...

<NITPICK> If you count the host controller (the computer) then the SCSI chain support 8 devices. IDs 0 -7 are available, but 7 is (almost) always occupied by the host controller. <\NITPICK>

Well, I like @JDW 's answer better. It really wasn't very exciting, unfortunately. NASA has never been what it was in the 60s since then. I worked there from 84 to 87 in Space Shuttle Payload Integration. Which sounds kind of cool. Get the payloads connected and ready, right? Except...

I don't really have time to sort out the whole diagram, but hopefully clarification/confirmation will be in the following details. First of all, on a 72-pin SIMM, 32 bits/4bytes are addressed at a time. So each address provides 32bit or 4 bytes of storage capacity. Address lines are...

Never mind. It turns out the Dataman 48Pro2C will do the trick and we have one at my work. Some days I get lucky.

The big issue is that the HC05 doesn't seem to be available with the necessary 368 bytes of RAM. One could substitute the 9S08 (HC08 successor) because the HC08 was backward compatible with the HC05, thus simplifying the software port. But the 9S08 has a very different pinout from the HC05...