The Sinclair QL Forum

execute code from rom again. Perhaps Im stepping on limbs here, but are there disassembled ROM listings floating around somewhere? A quick google brings me down to http://www.dilwyn.me.uk/qlrom/index.html but the first notated ROM dumps I downloaded didnt contain the actual asm listings :(. Alterna...

I think Sinclair never completed wiring up the write protection switch, so the OS cannot tell the difference from format failed.

You can replace the macro with
On Sinclair ROMs, you can call this even when interrupts and the OS are disabled. Communication with the IPC is very slow, so use sparingly.

Perhaps thats a matter for the philosophers to ponder. Since the FPGA is not a 68k CPU it must perforce just be a simulation..? Philosophical question indeed, as "emulator" can have a variety of meanings. The FPGA doesn't implement the same transistor layout and characteristics as the ori...

The debugger is a separate component I wrote as a Windows DLL and the UI uses Win32 API calls. It didn't seem worth porting it as I don't know of anybody other than me using it. I recently registered Q-emuLator for macOS, I'm working on Free Pascal, and I'd love to have any sort of debugger in it o...

Some newbie question; Im writing 128 bytes to screen locations in a loop, which is throttled by vsync (effectively, assumingly writing 1 row of pixels every vsync). Vsync is done as described at https://www.chibiakumas.com/68000/sinclairql.php I _assume_ that vsync occurs at 50hz, and I would thus ...

Is there an emulator that has a debugger and/or memory/instructions viewer?e The Windows version of Q-emuLator has a built-in debugger (disclaimer: I'm the author). It's very crude, but can be useful as it's non-intrusive. This is wonderful! Thanks so much. Im curious as to why this feature did not...

spkr wrote:Is there an emulator that has a debugger and/or memory/instructions viewer?e

The Windows version of Q-emuLator has a built-in debugger (disclaimer: I'm the author). It's very crude, but can be useful as it's non-intrusive.

Thank you all for your responses, slowly it's starting to get clear to me. From the zx spectrum, I have the experience that one can select an image or tape from an overarching menu, which is then loaded directly into ram and executed. From what you guys are telling me, I'm getting the impression th...

M68008 wrote: Interesting. Probably need to fix the same in Q-emuLator, then.

Looks like I had already fixed NBCD in Q-emuLator for the general case, but there was still an issue when the input value was $FA.