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As long as you fitted appropriate resistors for 33MHz you're fine :) The schematic values match the Apple Fool clock chipping website, so if you followed either you're good. I actually fitted a 320 to mine because I misplaced the original 300R - I'm not too bothered about 20 ohm higher (its a...

Made an updated version. Mustermann found my bug that was stopping arbitrary speeds working on all machines (not sure arbitrary speeds were working on any to be honest...). https://stuffandnonsense.elephantandchicken.co.uk/?p=2519 This version now fully works and you can type in absolutely any...

<off topic> If you don't know - cool trick : If you put a removable SCSI disk like a CD or a Zip disk in the drive before powering on, and it has a compatible driver on the disk for the host computer, the computer loads the driver from the disk right at the start of boot. This is a great way to...

Norton's estimate of Processor speed is wrong as often as it is right. It is even sometimes wrong on stock, unmodified macs. Some of the 2.5x bus multiplier PPC Performas used to just say the wrong speed. Long and short - don't pay any attention to that, it is out of anybody's control.

Don't forget to test serial. Your card likely doesn't use anything near as much power, but my old cards drag the 5v rail down, so if you have a PSU outputting 4.75v stock, you add the card and it drops lower and the computer crashes. But JDW has fully confirmed that he already has everything...

Yeah, not voltage then - was just a thought given you were seeing inconsistent behavior. Nice meter for the floppy port. I was meaning to make something when I was recapping a load of PSUs, but I never got around to it. The great thing about making one of those PSU extension cabless is that...

Hey JDW, I'd suggest double checking the 5V rail while the accelerator is running. Perhaps it was lower end, and the extra load is making it marginal. 68000s are picky about the quality of the 5V. Easiest way to measure it is from the external floppy port. The memory aid is that the fifth pin...

Oh wow, unexpected. I didn't think that System 1 would cope with the non-PWM control system. Guess the routines are in ROM. Another case of only primary evidence has value. Never believe accepted knowledge 😆 Edit - Quite a surprise though - isn't the memory map different in the SE? Doesn't ADB...

My guess would be that the Floppy Emu doesn't need the PWM speed signal because it doesn't have a physical spinning motor. This thread seems to be pointing towards the removal of the PWM related stuff in the SWIM itself, rather than the upgraded ROMs. So your situation is that you probably...

The host doesn't crash - the audio just... stutters is an understatement. This is a particularly bad example with this setup. Perhaps it is pushing their audio fix to its limits and beyond. Generally it works fine with short samples, but struggles with music. I've always found Prince of...

That is impressive. All of my SE accelerators cause issues with Prince of Persia's intro music. Not like the issue you're having with Tetris, a different issue where the music keeps dropping out and notes hang. That's what I was checking for. @Zane - historically there may have been two audio...

Good work - looks like setting the volume level to 1 brought it down into range. I was nervous to suggest that in case Tetris cranked it back up on launch and toasted your recorder. Like @Andy said, the stuttering sounds and looks like a background task hogging the CPU. As a quick test, perhaps...

Yes, you're right, sorry, I didn't listen that far. Part of the issue is that there is quite heavy distortion through the entire video, even on the stock config. Either the games you've selected have very crude sound (they're not games I play), or you're getting clipping on your recorder. This...

I recommend testing Prince of Persia - that's the game my cards struggle with most.

Yeah, the sound out on the SE isn't line level, just to warn you. It was designed to drive an external (I assume unamplified) speaker. The "Robust Firmware" sounds the same as the stock SE to me, although you are probably getting digital clipping on all recordings if you're overdriving the...

Take care - all you are comparing is the partition map itself, it isn't verifying data integrity. The other command I used was for that. That is a byte by byte comparison of the two files. "diff" compares strings, so I use xxd to convert the two binary files into a hex output, then compare the hex.

Its my own python script. Specifically "listPartitions.py", but it makes use of hfseditlib.py as well, so you need both files in the same folder. https://github.com/Phipli/HFS-Image-Inspect-and-Repair-Tools They're not a polished product and probably not for general use. I wrote them to help...

Yes sorry, you can't create a iso image of this type of CD. I missed that that was what you were trying to do. I wouldn't call it Windows-centric. A bin / cue image is basically an iso with a contents page (more accurately, what we call an iso is actually a .bin - the iso name only refers to...

Here is the partition map from the CD I ripped on Linux : ... and here is the partition map from the CD I ripped using Toast 3.5.x : But as with later versions of Toast, it very slightly modifies the file. This is the output of diff <(xxd ./My\ CD.iso) <(xxd My\ CD\ Linux.iso) ...

Have you tried using the menu option Format>SCSI Copy in Toast 3.5? Click "Data...", then pick the CD... then ... possibly click Options and deselect "Clear Driver Descriptor Map" - I'm not certain about this step, I tend to use version 4.x. I'd want to generate two images and compare them...