The Sinclair QL Forum

indeed Here we are then. 20240204_190724.jpg 20240204_190750.jpg the part above the drives has some text melted into it but the other end, around the actual keyboard and the keys themselves, are pretty nice. Metal backing and rubber dome mat present, the only slight inconsistency is that the CTRL k...

You mean just a top case half, with all the keys, the rubber dome pad and the metal backing plate?

I replaced the other electrolytics on the m/b just in case. No difference. I've fixed it though, sort of. I carried out the same mod on my other CPU daughter board and that one worked first time - BASIC in ROM! I can only assume that something is flaky on the other board I was using... perhaps one o...

That is likely as I've noticed that resetting (removing and reinserting or shorting the 3v battery quickly) has had an effect in the past. Then the message 'Permanent store lost' appears on re-boot. I've removed everything from the CPU board and am comparing connections etc with the other working on...

I don't think just trying to read from that address would cause that problem - as the data is in ROM. I know, it must have just been a coincidence. It has crashed previously while working through the Welcome package menus but I put that down to dodgy loaded data and it worked from another copy of t...

Deary me, I don't know what I've done now. While attempting to sbytes 524,288 for a length of 32 bytes the OPD reset itself and now I no longer have BASIC in ROM :? Apart from that it boots as normal, it just keeps trying to access the mdvs to find BASIC. It was working so well up to now. The 5v rai...

You are no doubt correct, but I'll verify by sbytes-ing a few bytes starting at 524,288!

I'm planning on making a similar mod - but replacing both logic chips on the right hand (processor) side of the PCB, and doing the same trick - three x 64K blocks - and the remaining socket switchable for either 128K ROM or RAM at the address designated for RAM expansion - for RAM to work - the cod...

That would certainly help with the C1 floppy interface as that takes 7.5K RAM meaning that the configuration programs can't load as they need BASIC and there's not enough memory left. Yes, that was the thing that inspired me to find a way to be able to open them and also any other large-ish BASIC p...

In the darkest depths of the internet I found an OPD Teledrive disk image that I haven't been able to get to work on my OPD yet, but browsing through the content of the image with a hex editor I found a couple of docs/references relating to putting ICL BASIC in ROM - which in my opinion is a mini ga...