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Maxima will do a fabulous job of managing a full-blown RAM disk on a Quadra with plenty of RAM. It works well with RAM compression, will back up to disk automatically on shutdown, and start up from said archive on booting. It’s a great utility. Spin down your mechanical drive in between. A Q650...

Try the utility Maxima for your RAM disk.

Your post made me go and look up the Wikipedia entry for Wirth’s Law (my usual port of call when this general question comes up; it’s a sort of devotional experience for me, inducing calm amid the sense of finding that the All has just been explained). Anyway, according to Wikipedia, the trend...

Just so you know, an AudioVision 14 in working condition is worth a fair sum of money — more than you might imagine if you’ve kept it in the loft for 20 years. Don’t toss it out on a whim.

Or just buy a battery….

Too bad. Have you tried any of the other ‘pram’ files in the Gamba links, then?

There is a Control Panel that might work: Pram Auto-Restore. I would have thought that network settings should be covered, but have never tried it myself. This Gamba archive has a list of associated tidbits: https://vintageapple.org/gamba2/tidbits.html , but the d/l seems to be broken. Scroll...

I really like this approach to collecting: one machine (or very few) maxed out and in use with period peripherals is an elegant alternative to 50 or 60 machines crammed on shelving and probably spilling over onto the floor. The latter approach has caused me a fair bit of trouble over the years...

A close-up pic of the black connector would be useful. Is it an 040 PDS? I have a vague recollection that there was a card (PPC accelerator, maybe?) for the IIfx that used both the PDS and a Nubus slot, but I don’t recall that combo being available for any other model. Mind you, I just went...

Certainly some late 80s/ early 90s cards need the monitor settings stored in pram, to which end you are meant to hold down a key on booting to force the machine to cycle through the options until everything is right. I can’t remember whether the 8.24GC requires that or not, but it is worth...

I have a spur with an air vent (a hose end with a plug shoved in — I used a piece of fibreglass rod) installed on one of the lines of my Quad (single pump) at the highest point to allow air to escape on a flush/refill. The spur is otherwise plugged, obviously, for normal operation. The idea was...

Is there a pad lifted at C5?

Since the processor is located on a daughter card, I would assume yes.

Well if 7.5.3 runs about as fast as 7.1 on the Classic II, I may just have to give it a go. The key attraction for me would be the better AppleScript. Maybe the best thing would be to do a fresh installation and try to use it with System Picker, so that I could revert to 7.1. The minor...

You have the required terminator on the end of the internal scsi ribbon cable, right?

Yes, I like a Classic II as well. For certain uses, like pure word processing, it is a fine machine, which carries out its duties with a minimum of fuss. But System 7.5.3? Why, oh why on a Classic II? Mind you, I have a vague recollection that the blessed eQuill, formerly of this parish, used...

Surely that .455kw would mainly be spent on spinning disks and fans, comparing numbers at a furious rate, and generally running the thing — generating heat as wastage in the process. How many watts would be wasted as heat is a guess, but the machine isn’t a simple resistor.

A Quad at full load apparently consumes 0.455kw/hr. If we assume for argument’s sake that 100w of that is dissipated as heat (which I expect is an over-estimate, but whatever), you’d be talking about it providing 2.4kwh a day of heating. So maybe you could actually take the edge off the cold...

There’s an optical sensor in both my (earlier, I think) Turbomousen which has to be clean; there’s also a capacitor, so you know what that means by this stage. Both mine had problems moving the cursor in one direction. One got fixed, and the other needs to go back to rehab, I’m afraid.

Switching processors would require thermal recalibration, but it ought to boot with fans blasting after the switch if the processors are both working. Sounds like a serious hardware fault.