Macintosh IIci Logicboard recreation

Sideburn

Tinkerer
Jun 16, 2023
255
84
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California
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I haven't sent the boards off for production yet so I'll add you to the list :)
I may also still have some IIcx boards, I'll have a look tomorrow and let you kow
I’m looking for a iici or a iicx board. I’ve recapped and repaired mine but I think it’s faulty. I have to have a ROMinator in it to work probly and I think it still has issues. My cards aren’t working. Only the video card.
 

Patrick

Tinkerer
Oct 26, 2021
434
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oh, i didn't know you were taking names.
If there are any boards available i would buy one.
 

trag

Tinkerer
Oct 25, 2021
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Just been getting a feel for how many to order, Will proably be ordering the boards the next week :)

I am interested, but you're going to be shipping from UK (I'm in Texas) which would add substantially to the expense, I think. I'd probably be smarter to wait and see if someone does a US based run...
 

max1zzz

Moderator
Staff member
Sep 23, 2021
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I am interested, but you're going to be shipping from UK (I'm in Texas) which would add substantially to the expense, I think. I'd probably be smarter to wait and see if someone does a US based run...
Shipping to the US form the UK is a bit pricey but not too bad
I will be posting the design on github once this run is done and I have verified the revised board works fine (Very unlikley it won't but I always like to check before releasing a design into the wild) so if you do prefer to wait I'm sure someone will do a US based run in the future :)
 

max1zzz

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Staff member
Sep 23, 2021
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I was hoping to get these ordered this month but my projects budget ended up being eaten elsewhere
All being good they will be sent off for production at the beginning of next month

Once I have the boards and have verified the revised version is OK I'll contact everyone who has expressed interest
 

max1zzz

Moderator
Staff member
Sep 23, 2021
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Boards are on order!
I have ordered 30 boards, all with the bottom side birdseed populated. Boards are purple with a ENIG finish

The good news is that although the order as a hole was pretty expensive the per board cost is actually lower than I expected so it's looking like the final price will be at (or maybe even below) the lower end of my initial estimates but I can't commit to a price just yet as I want to see what the import VAT bill is first!

I expect it's going to take a few weeks for these to be produced, assembled and shipped to me
 

max1zzz

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Sep 23, 2021
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Boards have arrived and been tested!
IMG_3519.jpg

These have a couple of modifications you may be able top see:
There is now a ATX connector behind the NuBus slots for people who wish to replace the original PSU, just keep in mind this will prevent most full length NuBus cards being installed in the left most slot. IF you are fitting this you will also need to install a 2N3904 at Q6 (this is not required if you are not fitting the ATX connector)

There is a position for a ATTiny85 to be fitted with the firmware available here: https://github.com/pgreenland/attinyrtcmodule if you RTC chip has been damaged by battery leakage. If this is fitted you do not need to install a battery holder, diodes or the 32.768Khz crystal as the firmware saves pram data to the ATTiny's internal EEPROM, you do however need to fit at 16Mhz crystal at Y8 (Y8 is not required if you are using the original RTC chip)

Finally there is a position for a DIP ADB controller, intended to be used with a PIC16F87/88 with @Tashtari's port of the ADB controller firmware available here: https://github.com/lampmerchant/macseadb88 but you can also use a ADB chip from a SE should you have one spare. I have found with some PIC's I have this causes stuttering issues with ADB so needs a little further testing so for the time being I would recommend using the original ADB IC unless it is damaged

These boards will be £45 each + shipping, I will start a for sale thread in the trading section with more details
I will try and contact anyone who has expressed interest directly but if I miss anyone please send me a PM

For those who wish to order boards directly themselves the designs will be on github shortly once I have tidied up the project folder
 

max1zzz

Moderator
Staff member
Sep 23, 2021
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Gerbers and schematic are now on GitHub

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 me

The BOM needs a little cleaning up as it is currently pretty much a raw export for KiCad
 
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