The Sinclair QL Forum

Thank you, Martin! I was hoping that someone would be able to add some more context around those snippets of code.


I am currently going through QLib_run_asm trying to add comments

This is what I have for these areas

Involves FOR loops.


I am mostly working on the initialisation stuff at the ...

I've been doing a bit of digging into this, mainly out of curiosity since I recently received a QXL...

There are some "interesting" sequences of code in qlib_run_asm:

Here we seem to be testing bit 30 of a pointer in A3 (I apologize for not understanding the context of this in the least, but that ...

I suspect it doesn't need any of the funky timing for RAS / CAS that the original GAL's use to provide.

But was the trick to relocate the ROM used I wonder? (needed for non Minverva versions of QDOS)


This is the correct answer, no more RAS/CAS timing logic. And yes, the ROM relocation logic is ...

Hi Techfury,

Thanks for the info! I have already ordered the components. And I have two spare WD1772 at hand.
I assume these work just as well as the WD1770?
Instead of the GAL I will try to make it work with an ATF16V8B. Those are still being made and sold.
I might redraw the board so the card ...

Thanks techfury


No problem!

Sorry this took a whole day to sort out, but the long story short is that the hosting provider decided to block outgoing SMTP (even on ports 465/587) to external servers about a week and a half ago, and didn't tell us.

Unfortunately, I spent a whole day going ...

It does seem that email notifications seem a bit broken at the moment, thanks for letting us know. I'll dig into this right now and see what's going on.

It does get fairly warm but it is not too hot to keep your finger on. There's a copper fill underneath the 7805 to help reduce the heat- I've found it does a great job of keeping the warmth confined to that single corner.

As far as power reduction, here's some quick "back of the envelope" math ...

Right here. Self-deprecating humor is allowed.

I think the GST ROM board does it too... or at least it seems to from my superficial reading of the schematic.

Come to think of it, I just realized I could test this by modifying one of my Trump Card clones' GAL equations such that $C000-FFFF pulls up DSMCL and triggers the CS for SRAM 2, and ...

Typically, a pointer appears when ptr_gen is loaded and you move the mouse. If you're in Basic, this is the "K" pointer.

In sQLux, however, nothing happens with ptr_gen 2.06. However, it works with 2.01.


That may be a ptr_gen thing, I've observed the same behavior (or lack thereof) with mice ...