Search results

Yeah... I'm in my mid 40s now, and this is only the second time I've ever had first-hand experience with a device smoking. The first was the Rifa cap on my 128K Mac's analog board going bang... but, well, Rifa caps. There's a reason they're notorious for this. I didn't dig much further in to...

If you've already got a system to do something with the video data once you have it, then it should - in principle - be not to difficult to build a declROM that tells the system to just put the data wherever you want it in address space. The basic Mac II setup is well documented, as you well...

Has anybody had any odd behavior from their hat? The reason I ask is that one of the ones that went overseas vented it's magic blue smoke... based on the description I got I think it's the PIC12F1840 that died... I don't think he did anything wrong, so at the moment I'm guessing that it's just a...

I was under the impression that the LocalTalk stack was tied into an interrupt so that packets didn't get dropped when something in the foreground went into a tight loop? Or am I remembering that wrong? I'd have to go review the relevant sections of Inside Macintosh, but I think that there are...

Uhh... can I ask the stupid question? Given the existence of the TashTalkHat... why not do it all in software? You'd need an INIT/System Extension on each Mac on the network, and a server on the Pi; but no other hardware would be needed?

I find the "spaghetti" reasonably readable; and find just labeling the connections without any lines more of a pain to figure out (having to hunt thru the while schematic to find what went where). ...mmmm... spaghetti... 🍝 great, now I'm hungry. See what you did? ;)

I wanted the effect to be as if you'd picked it up at Macworld Expo in 1985 or 1986 from a vendor in a small booth... obviously commercial, but more of a "mom-and-pop" outfit than a megacorporation.

Do you have an oscilloscope? If so, you might be able to trace the signal path and find a trace that's stuck low...

I haven't been following the thread; but just jumping in at the end here and eye-balling it... I think... I would suspect either bad VRAM, a fault in the data bus connecting to the VRAM, a bad buffer on the bus (if it even has one - I haven't looked at a schematic) or a bad video output chip...

Just thinking aloud... Generally speaking, it should be possible, working from first-principles, with the documentation that's available online (such as the above linked document, the 68020 datasheets, etc) to design a work-alike module to replace both the PALs and the NuChip... it would, of...

Thanks! That's what happens when you a: run out of packing tape; b: have a huge box of large shipping labels for your Dymo LabelWriter that you got off of Amazon for less than the price of a single "genuine" one; and c: happen to still have the TashTalkHat logo still open in Affinity Designer...

Took this before leaving for the post office... So, all but one (which I need the shipping address for) have now shipped.

Hmm... I'm wondering if there's enough room on the recreated SE/30 board to remove the B&W circuitry (without the Video ROM the system doesn't even go looking for it) and put this in it's place instead... :unsure:

Well... we'll try. Even though there's money changing hands, this is a hobby to me; so perhaps this doesn't apply...

It looks like Tindie is not working out for handling the international orders... and they seem to be in violation of the EU/UK's tax rules, as far as I can tell... well, I think. If anybody knows better, please correct me! There's only five international orders, though, and I've already spent...

All boards that have headers pre-soldered have passed testing OK - no bodge wires required. Obviously, I haven't been able to test aperezbios's two, because the headers are, well, unsoldered. ;) For the international orders, I'm going to try to go thru Tindie, as they are a recognized...

Hmm... looks like the minimum size box that the international post will accept is larger than the boxes I have on hand... and the local office supply stores are all showing either excessively oversize boxes, or (ironically) mail order only. So, off to Amazon I go to get a bigger outer box so the...

I ran into a soldering issue on a couple of boards... that means that counting one for micheledipaola, the entire batch is now spoken for. All the boards have been assembled; but they haven't yet been cleaned of flux residue or tested. It's possible that a board might fail testing and require a...

There's three of them left... I've sent you the ordering PM.

Egads... what did they write that in, Integer Basic? Even allowing for mis-tuning of the stack, that's miserable.