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Update time! First batch have all sold and a second batch of PCB's are in production The design has been changed slightly to stiffen up the units when assembled, the port pack and keypad are now one PCB with the LCD screwed into the centre of it, this also has the added advantage of getting rid...

A basic first pass of all the trace routeing has been done: Still need to do the connectors and check a few area's against the schematic (and run the big power traces down the sides of the board) but most of the hard work has been done now :)

It's that time of year again, time for a new clone! Really I should be working on the LC 475 board but 6 layer boards and desoldering 208pin QFP's is not seeming appealing at the moment so another project was needed I have been after a Apple II for a while but they go for way more money in the...

Afraid not though there isn't really much to test tbh, those simms should work with a couple of trace cuts and some jumpers ran (As they are essentially the same design as my simm from what I see just with the extra RAS's ran to the slot rather than a connector I might give @johnklos's idea a...

Very! ;) They have been tested and work fine on everything we have tested them on Need to assemble a couple more of them

I would think the controller IC would need programming to tell it how much flash is installed, having a quick look around I wasn't able to find a datasheet for it so can't confirm this. There are some configuration jumper resistors though but again without a datasheet it's hard to tell what...

I'm about 90% sure the board in my beige DT has a MFM header on it. Maybe i'll try desoldeirng the Apple / GCR header and installing a MFM one since the G3 is really a parts mac anyway

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