The Sinclair QL Forum

Hi, Is there a way, when using the Q68 with SMSQE, to load a 16k piece of code at address $C000 in order to simulate a QL plugin ROM module ? Some of these module can be loaded anywhere in ram (I think these was a tool for that but I can’t remember) but many need to be run from the correct $C000 ad...

Nope. "The "Spectrum Microdrive Book" is by Dr. Ian Logan, the guy who developed the Microdrive at Sinclair. So, from the bird's mouth. I used to have this book but sold it along with my Spectrum stuff :( From a disassembly of the IF1 ROM I found that hook code $27 reads a random rec...

My mentioning of sequencial access only on the Spectrum: The Spectrum doesn't have a concept of a user-modifiable file pointer - You cannot append to a file once it's closed, you can't write to a file you have opened for reading (that is, no "rw" mode) and you cannot access specific recor...

That's not true. Microdrives on Spectrum/IF1 and QL basically work identically. It is true that the QL implements more software, because it supports non-sequential random access - But that's just a thicker software layer on top of the HW the Spectrum doesn't have. The hardware is only different for...

I do not quit right remember but someone told me, that MDV handling on the Spectrum/IF 1 was hardware and on the QL it is software or vice versa. Would be interesting to know, how it is handled by OPD AFAIK the write protect handling was in software on the Spectrum and in hardware on the QL. On the...

Is there a way to get JS ROM to autoboot like Minerva does? I'm guessing this would have to be a modification withing the ROM itself, no? I posted my ZXSimulator on line ( http://zxsimulator.epizy.com ) and would love it to autoboot but would like to keep that iconic QL bootscreen. You probably hav...

grafvonb wrote:FYI, just selling https://www.ebay.de/itm/303628917543. If you want to get them without using eBay just let me know over PM.

I would be able to read them, but won't probably learn very much from them
Interesting though how they managed to end up in Germany...

Jan

This QL on UK eBay has a red sticker on its box that reads: 'Contains New Revised Versions of Psion Application Software'. I'd not seen that before. https://www.ebay.co.uk/itm/Sinclair-QL-in-original-box-with-microdrives-tested/303629783444 I suppose that probably indicates that it included the muc...

I can see the QL out performing a 4.77MHz 8088, as that's a 8 bit hobbled 16 bit processor too, but not an AT. Having said that, the PC-XT didn't have to drive the screen and interleave memory as I seem to remember that the MGA or MDA card had its own memory and hardware scrolling, so it would seem...

I've been running uqlx on a Raspberry Pi 3B for over a year now. The 2017 armv7 release from Dilwyn's site will run on the Pi but there is no compiled armv7 binary of the 2018 release. I've managed to compile and run it on the Pi after installing some libraries (notably the SDL2 development). When r...