exxos's Atari, Amiga & retro forum

alexh wrote: 24 Jun 2025 15:05 If you had a spare 060

Nope, but thanks, wasn't aware of that project :)

SteveBagley wrote: 24 Jun 2025 15:13 So a single beep sounds positive. Looking at the source, the next thing the bootblock does is try and initialise the keyboard, which is on the SuperIO chip so I suspect it might be stuck waiting for that to respond (which is difficult if it is removed :P).

Quite possible :lol: Whoever updated the stuff must have never thought that chips will be missing from the motherboard :lol:

Good it booted with the original stuff though! I might have given up otherwise!

So BB104 is test_20060514.zip I dismissed it before as it said TEST :lol: 104 doesn't work either.

But next I need to fix a broken track, gunk up the solder resist I scraped off. Possibly replace the vertical simm socket.. much to do yet :)

Repairing the track I cut while diagnosing the problem .


Bit of a fiberpen cleanup.



Solder blob over the cut.


New resign.


Put on a gentle simmer until I remember to turn it off or the battery goes flat...


Will go on a hunt for SIMM sockets now..

The "wrong" vertical simm socket..


Thought I better clean out my solder station before starting another job!


Outwith the old.. Hopefully those damaged vias are not important!

Looks like 11 & 12.. 11 is NC and 12 is A0 :roll: But its pad and track on the bottom seems fine. So "not important" at this point in time..


In with the new 45° socket... Which will no doubt set of some people's OCD ! :lol: but I'm not changing the other three SIMM sockets I cannot be bothered :lol:


Now cooking the other resist I scraped off yesterday..


Need to find a new battery.. New PCI socket (ordered from aliexpress just ).


Probably not much else I can do until my replacement chip comes now :(

I do need to figure out how to actually connect a keyboard to this thing at some point though! And how the hell do you connect a mouse even ?! :lol:

Also does anyone know what form factor this motherboard is, is it a mini-ATX ? Will need to find the smallest case possible to fit it all in at some point as well..

EDIT:
Maybe a cheap case like this would do ...
https://www.ebay.co.uk/itm/286152040992

This might be available online but I have the paper manual in German.

The DIN socket is the keyboard, you can use a DIN to PS2 adapter.

The mouse connects to an 8 pin connector just next to the pci slots. There should be a short internal connection cable.

I can't see any mention of the form factor but I think it is full size AT.

It must be designed to use one of these...


Probably had one years ago, brand new and chucked it away at some point :lol: :roll:

Can only seem to find them in the USA :roll:

I actually drilled a hole in the back panel and got rid of the slot plate.

Looks like it will cost about £30 to get a bracket with PS2 connector and cable :roll: cannot even find them on Ali express.

Anyway, I have asked my UK broker for a price on the MC68040RC40 mask L88M.. They only deal with genuine parts.. But the price will probably be insanely high, but no harm in asking..... I have asked the prices for 5 and 10 pcs. No use asking for lower amounts.

I think this was the thread I was looking at regarding fake CPUs
https://tinkerdifferent.com/threads/ide ... -mask.820/