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Unless @Kai Robinson swapped it out for a UTSource part then, it looks like Apple were fitting stealth SWIMs to some (probably later - why do a new run of the older part) 800k SEs then. I mean, it doesn't matter at all, they're functionally identical when used like that. You only noticed...

I think the chip is a SWIM chip and the situation is probably reasonably unusual. Where did the chip come from? is there any chance at all that it might be repainted? Alternatively, perhaps Apple were short of spare IWMs for stocks and so just marked some SWIMs as IWM. I think the mystery...

And a superdrive? So... it shouldn't... really be possible. Short background - The SWIM is a IWM with a second "chip" added, the ISM. These two separate parts of the SWIM are very close to functionally identical to their stand alone predecessors. In a FDHD SE, the IWM part controls the drive...

I shared the warning from this page last time you said. This is page 429 from Apple's "Guide to Macintosh Family Hardware, 2nd Edition". I'm confused, I'm unsure whether you think that the voltage isn't 8v peak to peak, or that it is OK to put 8 volts into consumer devices without it needing...

@JTRetro - carefully if you follow this advice. You're only meant to use high impedance headphones (a rare sight these days) {edit - I'm not sure what headphoes are appropriate, so advise working that out yourself} on the SE. Its way higher peak to peak voltage than a normal sound output. It...

Interesting, in my circles they just say "f***ing intermittent faults". Your way is more elegant I have to admit.

I managed to get permission to share the Control Strip Module from the original author of the Control Strip example code I based it on. https://macintoshgarden.org/apps/control-strip-475-overclock Its only 8k in size (larger on big HFS drives). Have fun. It has a ReadMe, but seriously, you...

OK, I got distracted by a side quest...

Anyone got some time to do a bit of testing? You need a... P475, P476, LC475, LC575, P575, P577 or a Q605 :) Awesome if you have a PowerPC upgrade. Latest version : Edit - actually, now like this, because I realised the sliders were sort of pointing the wrong way. Also I used a top secret...

Heh, I don't fully agree regarding reloaded vs original :LOL:. Some of us are very attached to the machines we've personally owned for 26 years 🤣

Take care running Norton Disk Doctor. It is very sensitive to what OS version you are running and can corrupt a disk as often as fix it. It is usually best to only run it in emergencies. Most of the "errors" it finds are hugely overstated. All the creation dates and bundle bits don't cause any...

In this context you don't need to worry about the difference, apple changed their naming convention over time. AppleTalk can be used over multiple types of hardware, LocalTalk specifically means using the serial ports. There isn't a practical difference between Petar using LocalTalk boxes and...

Ah, extra fun. 80MHz should be easier than usual then. A 66 card is better because they just clock double. I assume the 100 detects the speed and switches between 3x and 4x. Or perhaps runs asynchronously? Ah well, anyhow. 66 is better for now to see if that works, because we know what it is doing.

Thankfully I don't think that price is anything more than optimistic on the seller's part. We all have number keys and can mash them randomly. Never take listing prices as an item's value - always look at completed. There aren't any showing atm, but last time I saw they were selling in the $400...

First pass is mostly done, I had to stop for dinner earlier. The built in speed estimation thing needs a little calibration tweak and I need to make it load in the current settings from the extension on launch... after than I just need to do some testing to make sure everything works. I don't...

Tum te tum... Today's progress : Its less far on than it looks. I was just testing after building the XCMD I'm using to set the clock speed. Absolutely flabbergasted that it worked first time. I literally only compiled it (successfully) once. The app itself isn't function complete yet. The...

I found it! @Zane Kaminski @JDW It is a gestalt lookup. Note "More Information" in the corner describes how it works. More information also mentions that depending on the age of the computer there are also a couple of different gestalt selectors that give similar results. But anyway...

Ah, but don't forget that some of us run System 7.1 with Appearance Manager for compatibility 😆 Although admittedly I personally usually turn off the Platinum appearance when I'm doing that.

Just to clarify, I don't believe that TattleTech or Norton calculate the MHz themselves, I think they use an OS function... which I think might be run during boot. More guessing, but I think some accelerators modify the stored value to correct it so that things like Norton report correctly. I...

It wont work if you have a Spicy O'Clock installed because you have disconnected the onboard clock generator that we are re-programming. The RAM timings should still take though, so it might help out the Spicy O'Clock. The clock generator goes way higher than the computer could ever achieve...