The Sinclair QL Forum

I looked at this project on Hackaday and it is quite interesting. On the buffer, it would help to connect all unused inputs to ground or +5V. Between the buffer and the monitor connected pins of the 8301 socket, it would offer extra protection to add 5.1V zener diodes to ground. Apart from that, eve...

The SP800 head is compatible. The flex PCB ribbon is slightly different on some revisions but it is easy to swap them with a soldering and middle school soldering skills. The SP1000 head also works, but the ribbon is longer and always needs swapping. So if you check your flex ribbon is OK before ord...

It will work if you’re using any ROM except JSU.

How difficult would it be to port the MCS48 code to the MCS51 family? As a former Silicon Labs contractor I can supply as many SiLabs 8051 as anyone would ever want.

M.K. if all is right with the world would be Marcel Kilgus.

This looks like a board Sandy fitted to a few systems in 1984.

They're horrible and should not be used. We stopped using them as soon as we got customer feedback.

Welcome.

As for QL repairs? I'm all for it myself.

I don't know if that is correct. Sorry

Instead of a text description, maybe you need to create a schematic?

It’s good to have the fuse map, but it sure would be nice to reverse engineer the equations.

I wasn’t involved in the design or build of the keyboard interface. I would love to reverse engineer it and see if it could be adapted for more modern keyboards - which should be a trivial matter.