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Specifically, i'm trying to run Macintosh ROM's through it. While it can decode snippets of functions - it dumps a lot of 'data' it thinks - it can't determine what's code and what's not. Also, the references, while they line up, seem to be scattered around, and the visual graph looks like...

@Mark Fixes Stuff - would you be interested in a spool or two? :)

Problem with that is that you'd need to solder a castellated PCB in place as the pads are SMD. That's a bit fiddly to say the least.

Well, it chimes....then does nothing then chimes...and then chimes...and chimes again :D I've just ordered a recap kit and a few BU406's to re-do the analogue board. I'll reflow all the solder joints while i'm at it.

@Mac84 created the logo - although @Branchus is responsible for the theme - should be easy enough to cobble something together, with the assets - it's a good idea - perhaps a 1-bit version in 512x342 for classic mac's, too :)

I too would be very interested to learn the difference. The main ASIC is identical, it's just the Clock/PLL circuitry that there may be differences - perhaps we could each take some images of the boards to see what these differences might be?

Thats a really really nice print you have there!

Curious, but how slow is it, and is there any reason to run 8.1 on it, other than because you can? 😂

Well, this just fell into my lap! Literally never really thought about getting a Plus before as it seemed kinda pointless with me having an SE...well, a few/eight SE's and SE/30's in various states of being broken... However, I told myself that if i ever found one for a non-silly price, with...

...Why am i not surprised this has already been done? :p

From the images you've provided - it's confirmed my hypothesis - it's a clock doubler. The 89.92MHz oscillator is divided by 2 to give you 44.96MHz - the PAL's are there to decouple the onboard clock from the 68040 clock, letting the CPU run asynchronous to the bus, thus eliminating any issues...

You likely won't break anything - just needs to be unplugged from the socket it's in - sometimes you just need to take your time levering it back and forth with a plastic tool, or your fingers. Hard to tell what it is for definite, as the parts are mostly on the side you can't see - we're only...

Found another one for the UK: https://microdream.co.uk/catalogsearch/result/?q=apple+powermac

That looks very much like a speed doubler - or L2 cache, as @Fizzbinn mentioned. You can get it out of the socket by gently wiggling it and pulling on it, or you can lever it with a plastic spudger?

Came across this today - would be ideal for anyone looking to resurrect a dead machine without having to resort to cannibalising the ever decreasing number of working machines out there. https://monotech.fwscart.com/MOS_CPU_Replacer_(65108501)/p6083514_21591072.aspx Technically it'll replace...

FB, in PCB Silkscreen nomenclature, stands for Ferrite Bead - they're just wire links with a ferrite surrounding them - used for noise suppression - any cheap ferrite bead from eBay would do the job :)

Honestly i'd be really interested to see what would be possible with the Apollo '080 core that's used in the Vampire series of Amiga accelerators.

This will allow the use of the PLCC ADB Transceiver in the Macintosh SE, which is the only model that uses a DIP18 part. There's not much to it other than that! @Branchus has used one of these, successfully, in a troublesome SE, iirc. The github page to the project and the gerbers, is here...

@AlexCL did something to a Mac, using a PiStorm, iirc, if that's the thing you're referring to?