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I vote for the 28th of march 2021. "We have repeatable beep!"

It's a early board, all the very early boards have that bodge on them Not 100% sure on what it is doing but I suspect it is doing something to one of the clocks coming out of U22 as the later boards has the position for a 74xx00 in the same position as that deadbugged chip that is doing...

Forked it :) Guess I better go grab the plus from the loft now!

I could do, would just need to find time between all the other projects! Though now might not actually be a bad time as I have pretty much finished off the two big projects I have been working on (LCIII DIIMO and the TechStep) hmmm.....

It's that time of year again!

I managed to make some NuBus brackets, Getting the correct balance of getting them thick enough to survive printing while being thin enough to actually fit between the card and case was a pain but I was pretty happy with how they came out in the end Also found while doing this that although the...

Well the exact final design hasn't been decided so maybe :) The keypad PCB is pretty much entirely custom and apart from the keypad matrix which is a copy of the original, J2 should be populated I just forgot it :) J3 is a optional battery connector for a flat lithium cell (rather than the...

Got the LCD module mounted properly which makes it look much more like a TechStep Now that's done I can finally do some proper testing on it :)

All I have to say is this:

Board layout, gerbers and scans are now on GitHub: https://github.com/max234252/MacIIcx_Reloaded As with my other designs these are provided under a non-commercial licence but if you are a repairer and want to offer transplant services (or have any other commercial use in mind) please contact...

Yeah they are a a bit of a pain but as @jajan547 says they are available. I'll order some form UTSource (As I need to to a order from them anyway) but they are also available on Aliexpress if you know what to search The main pain to get is the main microcontroller, I managed to snag a lot of 8...

Much progress has been made since the my last post to this thread! Stage 2 is now more or less complete, All the hardware has been reverse engineered and new boards have been drawn up and sent off for manufacture. A quick overview of the current status of the hardware: Logicboard: Port...

For anyone needing the PLCC adapter it can now be found here: https://github.com/max234252/PLCC-ADB-Adapter

There's not much to it, PCB looks like this: And it looks like this when soldered onto a slightly grubby blue IIcx Reloaded board (Ignore the bodge wires - those are errors in the Rev 1.0 IIcx reloaded board not the adapter): Gimme a minuite and i'll get the board files uploaded to github...

Oooh thanks for reminding me, I need to post that board on GitHub!

A quick note for anyone who might have had one of these boards made: I have discovered a error in the layout which stops accelerator cards form working in these boards (And possibly PDS cards that try to do DMA), there is a resistor on /BR of the onboard CPU that should be a pull down but is...

Np, good luck! :)

It was posted over at 68kmla: https://68kmla.org/bb/index.php?threads/mac-se-adb-controller.38363/post-458217

The PIC16F87 / PIC16F88 with @Tashtari's conversion of the ADB code is a drop in replacement, no adapters needed The 342S0400-B will work with a adapter though it may be cheaper to get a PIC if you have something around that can program it

unfortunately not yet