Recent content by phipli

I hadn't, but I had come around to the same information via another route. I have the schematics they're talking about for the 6500 so I can double check things and make sure it matches what I'm seeing on the 4400. I've ordered an SMD 50MHz crystal, it takes longer to dismantle the machine than...

I... if your machine doesn't think that it is a supported machine because you hacked your OS, there isn't much I can do. The software crashes if you try to run it on a real LC 580 so it wont run on something that is reporting as a 580.

I managed to speed bump my PM4400/200 to 240MHz. Turns out the answer was written on the silkscreen of the Motorola StarMax! You can set the speed to anything between 80MHz and 240MHz (in mostly 20MHz steps). I got an 11% improvement in Norton System Info's CPU benchmark overall (from Norton...

@GerrySch I doubt you've killed your SE/30 completely. The most likely thing is that you've put the tantalum capacitors in backwards. Irritatingly, they're marked backwards compared to regular electrolytics. The symptoms you describe are exactly what happens when you put tantalums in...

A fair. I'd forgotten you said that because I have a box full of caps and wasn't thinking. So that is a slightly different situation, it is still... not great to run a machine without capacitors. Sometimes you get serious transients that can damage a chip, the caps soak them up. I know you...

Not hugely helpful, but I got myself an ultrasonic for this sort of thing. Other than that the only thing you can do more is if you can find a solvent proof tray and submerge it in IPA and brush it gently with a paintbrush (make sure you have some ventilation). Make sure you let it dry before...

I dug out the original photo, so here it is in higher resolution :

You shouldn't run a circuit that has leaked electrolyte on the board. The reason is that the electrolyte allows electrolysis to happen - it strips the outer surface off pins and things corrode way faster than when a computer is just sat on a shelf. The damage tends to concentrate on the power...

Most stuff comes with an installer, so you just double click the installer application and follow onscreen instructions once you've decompressed it. If someone has just grabbed the actual files, then what you do depends on what the files are. Drivers are usually either an "Extension" or a...

If you draw what you want in a paint program and then copy it to the clipboard, go to the "Desktop Patterns" control panel and paste in your own pattern. You're no longer limited to 8x8 but can do larger designs - not sure what the maximum is, something like 128x128. See the teddybear desktop as...

What ethernet card is it? Do you have the main chip part number? Or a photo of the card? Cheapest solution based on what you're saying is going to be to buy a second hand or borrow a USB CD burner and a pack of CD-Rs, although some old drives don't like reading some brands of CD-Rs. Don't buy...

Its also the wrong PSU - it is the older, lower power LC / LC II style PSU, an ASTEC in fact :) My LC 475 is an official body snatcher - someone bought the logic board upgrade kit with the sticker for the front case. Means the case has an LC II era serial number and the groove on the front of...

If I remember, you shouldn't expect big differences between when the CPU is busy and when it isn't with this era of chips, although I'd be interested to know for certain. My PSU isn't recapped, so my machine isn't a good example.

Hum, my understanding was that Doom and Doom II showed FPS on mac, but you had to reduce the size from full screen.