The Sinclair QL Forum

Interesting, you managed to jump to a system variable (SV.RAND) which contains a random number... And by chance it happened to have a value $Axxx which is always illegal to the 68000 (but often used by emulators).

Thanks Tofro, so "OFFSET 0" puts the code at the start of the 4kb? It still won't assemble code after an OFFSET though (the offset section is at the end of my source file) You need to add a SECTION directive after the block defined after OFFSET 0. E.g.: OFFSET 0 label1 DS.L 1 label2 DS.L ...

Just a short explanation on why you shouldn't be fiddling with PC_INTR ($18021) directly: If you write directly to that address (a hardware register), you're confusing the system that normally maintains a copy on what was last written there. Next, you seem to be writing $ff there, which re-arms all...

I tend to use code like that: timerLinkage timer_pllk ds.l 1 ; Polling interrupt linkage timer_plad ds.l 1 ; Polling interrupt service routine address ... I can't get most of this to assemble especially anything referencing "(A6)" which throws "relocatable value not allowed here"...

Have settled on the Quanta version of GST but have replaced the QED_exe with Jans v2 QED (BTW I couldn't find any version of QED that matched the downloadable, from Dilwyn's download pages, Quanta QED manual though, but my old physical manual seems to have the correct commands. e.g. the Quanta manu...

You need to disable interrupts anyway on standard QDOS when using the second screen. But MT.IPCOM keeps working as it communicates directly with the IPC, so keyboard input and sound output is still possible.

Looks like an Issue 5 motherboard which originally had IC17 fitted but that's been snipped out after the ROMs have been upgraded to JM at some point. There's a Hermes manual and the co-processor is a Philips rather than the usual Intel chip so that could be a Hermes but I can't yet tell. A Philips-...

I've just posted a new paper called "The Sinclair QL in North America" on my website. It has details on the launch of the QL here in the US, the QL & T/S community, the QL shows, the vendors and even QL software written on this side of the pond. Nice to see a mention of QBOX :) . I re...

Hi Wietze, I read from some manual that when using Minerva one should not change the stack pointer. In the Minerva romcode itself, I see there are assumptions made about the location of the stack pointer. Some minimal testing shows that this matters (in my code SP is set to $30100, and Minerva makes...

Hi Jan, thanks for your comment, nice to see another Dutchie here :). Regarding the nop; yes, geez, is my face red. That is supposed to me ending in 5.... ;) Correct: vblRoutList dc.l 0 dc.l demoScriptHandler Where demoScriptHandler is part of the little kernel of my demosystem. That looks OK, thou...