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...Passives on, but i've lost two of the diodes and a resistor in the kitchen somewhere - no biggie, right? Well, the diodes are marked J5 which equates to a ZC834 single diode. Which are obsolete. And i can't find a suitable replacement as they're variable capacitance... 🤦‍♂️ The other issue...

IT WORKED! Full heat on the cast iron helped the socket just pull right out - however, in the process, the PCB lifted about 1cm and dropped...and then flung off the bus switches and a few passives - all are intact, no bent legs, just means i have to solder some TSSOP-48 parts! No trace damage...

I've spent 4 hours so far trying to remove it with little success so far. I've currently got it on a cast iron hotplate in the kitchen. I fluxed the crap out of the pins and methodically went over each one with the iron set to 380*c and some 2.0mm GootWick, and have cleared each individual hole...

Paging @techknight :p

Some of you may not be aware, but we do indeed have a Discord server, ideal for chatting with fellow tinkerers - come and join in! :) https://discord.gg/CM3JqTSTNF

http://www.merlintec.com/download/unitron1.pdf http://www.merlintec.com/download/unitron2.pdf I uncovered these a while ago, it may help to reverse engineer the PAL's used on the 128k, 512k and potentially, the Plus. All of this is courtesy of a genius by the name of Jecel Mattos de Assumpcao...

The following is courtesy of Wouters page on the Macintosh PAL's, here: http://www.retro.co.za/ccc/mac/ReverseEngineering/PALs.html /TSEN0 /CS 11 10 GND /CASL O 12 9 I /LDS /CASR O 13 8 I /UDS /RAS R 14 7 I /AS TC R 15 6 I /ROM C1M R 16 5 I /RAM...

Want to sacrifice one to me to reverse engineer? ;)

Get yourself a Meanwell RT-65B Power Supply, some wire and a 14-pin Molex Mini-Fit Jr plug & crimp tool - you can make a really simple bench power supply for these :)

@Ron's Computer Videos That looks simple enough to replicate, the PAL/GAL on it could potentially be reverse engineered by @Bolle

My New Macbook Pro 14 with the M1 Max has finally arrived. I ran a few benches and it's impressive to say the least!

Ahhh thats for the older magazine with the original PAK68, not the 68/3 as detailed here. @RMCRetro has that magazine somewhere, i think!

Urgh. Sounds like a pain - but presumably that's a PDF download once you do?

Some of you may be aware of the PAK68 line of open source accelerators, originally published in the German C't Magazine in the 1990's. This was intended to be a 'universal' 68000 accelerator, for the Atari ST line, primarily, but with modifications you can make it work in an Amiga or a...

Hmm - it's not either of these, is it? http://websites.umich.edu/~archive/mac/game/gameutil/simcitybank.cpt.hqx http://websites.umich.edu/~archive/mac/game/gameutil/simcitydollarspatch1.1.cpt.hqx I do remember how to edit the DOS version, using debug:

Brand new, from Germany! For €30!! This is equivalent to the Radeon X800XT and will work in AGP PowerMac G4's once the EEPROM is flashed with the X800 XT ROM and the requisite pins are masked off on the edge connector. Best part is, the seller has dozens of these - they're ex-HP workstation...

Yes you could but if you're talking about standard ZIF modules from a B&W, DV warehouse has 400 MHz ZIF G4's in stock for cheap.

I literally found these in my parts bin - ideal for upgrading G3 machines, or for 1st gen G4's. These are 500 MHz parts. I honestly don't remember why, or when, I bought them! Anyone want their iMac DV upgraded? 😛

What 'problem' did the bodge wire fix? :)

Steal the SND and the 26LS chips if you can.