The Sinclair QL Forum

Also its a mystery that the QL has a 9x11 Matrix, the 8049 IPC only supports 8x8 Matrix. The CTRL, ALT and SHIFT keys are on their own line separate from any other keys, so pressing them and two other keys does not create a ghost click on the 4th corner. This adds one line on one axis of the table ...

The RAM in the QL was the absolute least they could get away with. Everything is marginal. With the incredibly poor power and debounce practices used, the QL seems to spend almost all its life only just working. Some early FB QLs had -200 DRAM, but they quickly switched to -150 and some of the very ...

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?