Search found 394 matches

by janbredenbeek
Sun Sep 13, 2020 10:22 pm
Forum: The Welcome Area
Topic: Hi there from The Netherlands!
Replies: 6
Views: 253

Re: Hi there from The Netherlands!

kever67 wrote:Howdy QL lovers!
I am René van Egmond from the Netherlands.
Some might know me from the Spectrum scene.
As a Sinclair collector I also have some nice boxed and loose QL's.
Hope to learn a lot here.
Cheers guys!

Welkom! :)

Jan
by janbredenbeek
Wed Sep 09, 2020 12:13 am
Forum: Compatibles Corner
Topic: Q68 and plug-in ROM
Replies: 4
Views: 1584

Re: Q68 and plug-in ROM

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...
by janbredenbeek
Sun Aug 16, 2020 10:30 pm
Forum: Compatibles Corner
Topic: ICL OPD
Replies: 67
Views: 7252

Re: ICL OPD

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...
by janbredenbeek
Sun Aug 16, 2020 12:42 am
Forum: Compatibles Corner
Topic: ICL OPD
Replies: 67
Views: 7252

Re: ICL OPD

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...
by janbredenbeek
Sat Aug 15, 2020 9:02 pm
Forum: Compatibles Corner
Topic: ICL OPD
Replies: 67
Views: 7252

Re: ICL OPD

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...
by janbredenbeek
Sat Aug 15, 2020 8:48 pm
Forum: Compatibles Corner
Topic: ICL OPD
Replies: 67
Views: 7252

Re: ICL OPD

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...
by janbredenbeek
Sat Aug 08, 2020 9:33 pm
Forum: Software & Programming
Topic: Auto-boot in JS ROM
Replies: 10
Views: 661

Re: Auto-boot in JS ROM

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...
by janbredenbeek
Sat Aug 01, 2020 9:45 pm
Forum: Online Auctions
Topic: Sinclair QL books in Dutch
Replies: 2
Views: 325

Re: Sinclair QL books in Dutch

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
by janbredenbeek
Sat Aug 01, 2020 9:39 pm
Forum: Online Auctions
Topic: eBay item, boxed with a Psion version sticker.
Replies: 2
Views: 374

Re: eBay item, boxed with a Psion version sticker.

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...
by janbredenbeek
Sun Jul 19, 2020 10:37 pm
Forum: General QL Chat
Topic: What makes the OS for QL any better, different, unique ?
Replies: 89
Views: 10623

Re: What makes the OS for QL any better, different, unique ?

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...