68kMLA Classic Interface
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| Click here to select a new forum. | | Colour Classic plus Performa 250 | Posted by: elbaroni on 2008-10-06 19:56:44
Which pretty much means two colour classics. I paid through the nose for them, but that's why I drag my arse to work every day... I plan to harvest my LC 575 board for the P250 case, and to leave the CC virginal.
| Posted by: retrogmr on 2008-10-06 20:23:02
Very cool score... I just spent the weekend reacquainting myself with the joys of RegEdit to make a 575 board work in one of these without bugging out.
So the question is, what version of System? 7.1 with the 7.5.5 hacks? Straight 7.5.5? 8.1?
| Posted by: elbaroni on 2008-10-07 17:09:33
I've tried them both out - the CC works perfectly, but the 250's screen is green and blotchy and it won't boot. The screen should be fixed by leaving it plugged in overnight - apparently they have built-in de-gaussing circuitry, and the booting is easy to fix.
I'd forgotten just how slowly an LCII runs. 16 mhz of molasses. Yikes.
| Posted by: LCGuy on 2008-10-07 18:03:26
Very nice score. 🙂
As for the slowness of an LCII, here's something - although its completely unsupported, any LC II will, straight out of the box, boot into, and run System 6.0.8. Not System 6.0.8L, but normal System 6.0.8. I'm curious if it would run on a CC also, or if they've changed the ROM too much....something to try, anyway.....
For the record, welcome back elbaroni 🙂
| Posted by: porter on 2008-10-07 18:12:47
any LC II will, straight out of the box, boot into, and run System 6.0.8. Not System 6.0.8L, but normal System 6.0.8. Yes I run 6.0.8 on an LCII,
A gotcha when installing from floppy is you have to boot from the tools disk not the install disk.
| Posted by: tomlee59 on 2008-10-07 18:46:59
I've tried them both out - the CC works perfectly, but the 250's screen is green and blotchy and it won't boot. The screen should be fixed by leaving it plugged in overnight - apparently they have built-in de-gaussing circuitry, and the booting is easy to fix. The degaussing circuitry is only activated for a few seconds at turn on. And once activated, you can't reactivate for some time (components need to cool off). So, if you have the need for serious degaussing, simply leaving it on overnight won't help. You'll need to cycle it on and off many times, with long waits in the off state.
In severe cases, it's best to use a separate demagnetizer (if that's the problem with your splotchy screen).
| Posted by: elbaroni on 2008-10-07 19:50:08
Thanks, Tomlee. I read somewhere (Pickle?) that leving it plugged in, turned on at the back but shut down was the way to fix the screen. I'll give that a go first (seeing as I can do that as I sleep) and try your method if that doesn't work.
I think 6.0.8 won't work on a CC. When I said LCII, by the way, I meant the CC, which is the same processor and crappy logic board. Roll on the 575 board, says I.
| Posted by: tmtomh on 2008-10-07 20:34:57
Because the CC and LCII share nearly identical logic boards, there were reports that 6.0.8 (or 6.0.8L) would run on a CC. But it turns out that isn't true - it runs on an LCII, but not on a CC.
| Posted by: equill on 2008-10-07 22:51:25
... I read somewhere (Pickle?) that leving it plugged in, turned on at the back but shut down was the way to fix the screen ... Also wulcum back. It is a most-often effective way of re-inducing the pseudo-softpower ('active power control' in Apple's parlance) to return to the job after some time off the mains power. Given that the second thing that you do after receipt of a CC/P250 (after opening and cleaning) is to check/replace the PRAM battery. Be not dismayed to find that the battery varies between 3.6V lithium and 4.5V alkaline depending on production date.
Nice catch, by the way. P250s are not easily come by, although Australia seems to have been one of their stamping grounds. You are perhaps a tad unkind though: what can reasonably be expected of a 16MHz machine throttled back from 12MB actual RAM to 10MB useable, and blessed with totally inadequate screen real estate? Cute, yes. Useful, once, when aspirations were lower.
de
| Posted by: elbaroni on 2008-10-07 23:13:16
Maybe I'm a little unfair. You're right. I should also note that I was running it in thousands of colours.
That said, I'm about to write a 7500-word essay for uni, and I think I'll do it on the CC. Small screen, true, but such a nice atmosphere.
| Posted by: elbaroni on 2008-10-09 00:35:48
Well dammit. Now the CC has permanent pincushion distortion. I've cracked open the case and I can't fix it. The p250 has a geometrically perfect screen but I've not yet solved the degaussing problem.
Any ideas what might be causing extreme pincushion distortion in an original CC?
| Posted by: equill on 2008-10-09 08:45:28
This is a handy reference to have nailed to your 'frig. door. It will give you choices, and a means of distinguishing, between loose yoke, defective caps in the horizontal deflection circuitry, bad power-supply, and many others. I've not met such behaviour as you describe in any of my CCs/P250s (6), so I shall leave it to others (murmur the name of tomlee59 into a megaphone, and see whether he is listening) to chime in with their favourite faults. In the meantime, happy reading!
de
| Posted by: elbaroni on 2008-10-09 15:22:04
Wow, I don't think my fridge is that big, equill, but thank you. I'll check it out when I get home from work. I'm determined to get both the little buggers working perfectly so I can start mucking about with them...
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