Comments for 6502 Lane

Comment on Apple III Restoration: Hey, It’s Progress by Camden

Camden — Thu, 02 Sep 2010 17:18:48 +0000

@Mike: I’m in the process of getting some new AC main filter capacitors for the power supply, but while mine was down, I cleaned the head (it was covered in dust & dirt from it’s incarceration), and I was going to align it, but I’m not sure about the process, either.

I do know someone who had to use a multimeter and a logic probe (luckily not me, because that stuff is a pain), but it (I don’t know if it’s any help, but it might be the same chip) turned out that the bad chip was number 341-0042. But, that chips is for a 12 volt board…

Comment on Apple III Restoration: Hey, It’s Progress by Mike

Mike — Thu, 02 Sep 2010 17:04:31 +0000

@Camden: I haven’t nailed it down yet. I did swap the power supply for a known good one and got the same results, so there’s probably something on the logic board that is pulling it down. Board swapping is an easy, if scatter-gun approach and doesn’t always reveal the real problem, unfortunately. Like I said, I think the next step is probably a multimeter and logic probe.

On #018052, I can successfully transfer disk images directly to the /// using ADTPro. The drive passes all the diagnostic tests on the Dealer Diagnostics Disk and Confidence Disk, so I’m assuming that the drive needs to be aligned, a process I’m not familiar with. Or, maybe there’s a flaky chip on the motherboard that causes the crashes when I try to boot certain disks (like the Demo Disk).

Comment on Apple III Restoration: Hey, It’s Progress by Camden

Camden — Thu, 02 Sep 2010 16:40:02 +0000

@Mike: Have you been able to locate the board that has the problem? And on #018052, Have you tried ADTPro and a Serial Null Modem Cable to make some disks to try? You can also check the disk drive speed, and analog board and some other things that I never did, so I can’t remember (Using the /// confidence diagnostics)

Comment on DO WANT by Mike

Mike — Thu, 02 Sep 2010 16:28:32 +0000

@Ken: Yeah, I knew it was a DIY. Thanks for providing the link to the instructions. It always concerns me – just a little – when I see stuff like this. Not as much with the stuff that uses more recent Mac bits, but somewhere out there, at least one Apple /// keyboard was sacrificed to make a set of nifty cufflinks…

Comment on Apple III Restoration: Hey, It’s Progress by Mike

Mike — Thu, 02 Sep 2010 16:04:23 +0000

@Camden: Ah, the infamous Apple /// dropfix! I went ahead and manually reseated each of the chips, with no luck. I fear I may be forced to pull out the multimeter and logic probe if I want to pursue this any further…

Comment on Apple III Restoration: Hey, It’s Progress by Camden

Camden — Thu, 02 Sep 2010 07:07:14 +0000

I have a ///, and my situation is the same is the last (although I’m positive that my media degenerated)

What I would recommend with the first two is to pick them about 3 inches from the floor, and slam the computer down to reseat the chips. Trust me, it’s better than taking all of the boards out, and pushing on the chips located on the motherboard.

Comment on DO WANT by Ken

Ken — Wed, 01 Sep 2010 11:16:19 +0000

Sadly, this is not a retail product but a DIY one. Here are the instructions in their native French and in Google English.

Comment on KansasFest 2011 Announced by KansasFest 2011 dates announced | Apple II Bits

KansasFest 2011 dates announced | Apple II Bits — Thu, 26 Aug 2010 12:00:21 +0000

[...] the meantime, take Mike Maginnis's advice: saving just a dollar a day will cover your KansasFest registration fee. It's easily one of [...]

Comment on Apple Panic? Oh Yes! by Session continuations | KansasFest

Session continuations | KansasFest — Tue, 24 Aug 2010 15:06:09 +0000

[...] hig blog, Mike Maginnis elaborates on his presentation of the Apple III, detailing the machine's design and [...]

Comment on Apple Graphics Tablet by Mike

Mike — Mon, 23 Aug 2010 02:26:00 +0000

Thanks, Ken. I added a shot of the packaging for the overlay. Enjoy!