Well, it looks like the fault is in the PAV board itself. Not dead, but still very weak. Solution? The "donor" system arrived today. It's an Indigo G3, case is pretty scuffed but…

Thanks for the links. I have no idea if I'll be able to pull it off or not. Looking around, there doesn't seem to be a whole lot of success stories. With more searching, I found t…

What about the MMU in the //e? Click to expand... You might want to take a look at a couple of projects that have come before. But first, you probably want to abandon all hope…

What about the MMU in the //e? Click to expand... How much memory does the MMU page in and out at a time? Both granularity, and within the memory map of the 6502? Click to e…

What about the MMU in the //e? Click to expand... How much memory does the MMU page in and out at a time? Both granularity, and within the memory map of the 6502?

Who would have guessed? I found this on Apple's site. It's ancient: Super Serial Card: Using with Machine Language

Yeah, I have first hand experience with a broken tube.. Still alive to this day.

Also the 6502 has no virtual memory management, so fork() becomes meaningless. Click to expand... What about the MMU in the //e?

Urg, 6502 is one of the worst processors for C let alone UNIX. The size of the stack (256 bytes) is crippling. So you have to do the stack yourself. Also the 6502 has no virtual me…

Ok, now I'm just really pushing things here, aren't I? Aside from my project to write a network game for the Apple II, I also want to look into Unix or any other multi-tasking i…

Yes, when not discharged a CRT can hold up to 27,000 volts. However, there's also an even bigger risk of the CRT neck (which is VERY fragile!) being cracked or broken if handled in…

I hope this doesn't seem like thread hijacking. It's kinda related... What are the risks of disassmbling an iMac down to the CRT? I'm always heard that CRTs are oh-so-dangerous be…

iMac600, if you need parts, let me know. I've got a iMac DV SE with 500 Mhz G3, Firewire 400, that currently has a bad P.A.V. Board I need to get rid of. It's either that or I've…

...is knock, knock, knockin' on heavens door. Since i've owned it, predating even my involvement on these forums, it's been a loveable old machine with CRT problems. The display f…

Sounds like the hard drive.

Holy crap that's a loud and scary noise! It's definitely a fan or a drive.

You're not kidding when you say "broken engine"... sounds like a spun bearing in a V6 engine. Diagnose it like a broken engine then. Open the case wide open, start the machine up …

I see nothing in the fan.

You've got something in the fan… I wouldn't worry that much, since you can hear the startup chime. What's going on, apart from the noise? Does the computer boot? A QUicksilver case…

8-o Did it eat your chips? ;D

Well, I was working in OS 9, it crashed and then I heard this horrid Mechanical Fail Noise. I unplugged it. I plug it back in, and it is the WORST failure sound I ever heard. htt…

Thank you all. This is very helpful. The gist of it in my judgment is that the re-celling of a 2400c battery would be slightly speculative, but worth the price of speculation in t…

Best I can tell the controller boards are all custom but the heart of the intelligence is in chips that can be custom or commercial parts. The intelligent battery controller in th…

You might also want to search this forum for Wally's posts on this subject. He's done the most thorough experimentation and research of anyone I know. I'll briefly share my experie…

http://lowendmac.com/ed/hatchett/08jh/rebuilt-laptop-batteries.html http://lowendmac.com/ed/hatchett/08jh/inside-powerbook-battery.html