Search found 78 matches

by M68008
Fri Mar 30, 2018 6:20 pm
Forum: QL Emulation
Topic: QEmulator support for old MAC Powerbooks...
Replies: 17
Views: 2741

Re: QEmulator support for old MAC Powerbooks...

In addition to what Derek said, if you have an old PPC machine with System 7, in theory you may be able to run the PPC version of Q-emulator. But it's an even older version than the 68K one and no SMSQ/e support either.
by M68008
Tue Mar 13, 2018 4:33 pm
Forum: Hardware
Topic: Troubleshooting black display?
Replies: 14
Views: 2498

Re: Troubleshooting black display?

Just received a new HDMI converter that works with the RGB SCART signal and I'm happy to report that it works, so the QL is good!
There are missing pixels on the right and a few extra at the bottom, but overall not bad, much better than the B/W TV I used in the 80s.
by M68008
Sun Feb 25, 2018 8:20 pm
Forum: Hardware
Topic: Troubleshooting black display?
Replies: 14
Views: 2498

Re: Troubleshooting black display?

Good info about the SCART cable, thanks! I'll buy a different HDMI converter.
by M68008
Sat Feb 24, 2018 8:10 pm
Forum: Hardware
Topic: Troubleshooting black display?
Replies: 14
Views: 2498

Re: Troubleshooting black display?

Unfortunately I don't have an old TV anymore (SCART or otherwise). I've now tried my only other monitor which is my PC's monitor, with similar results: the monitor detects the HDMI being plugged in but it doesn't see a signal on it ("entering power save mode"). SCART cable I'm using: https...
by M68008
Fri Feb 23, 2018 10:15 pm
Forum: Hardware
Topic: Troubleshooting black display?
Replies: 14
Views: 2498

Troubleshooting black display?

I got a QL and I'm trying to connect it to my TV through a "QL Scart" cable and a SCART->HDMI converter, but nothing appears on my TV. The TV does detect a HDMI signal from the converter, but displays nothing (black screen). Apart from the video, the QL seems to work fine: MDV1 turns on af...
by M68008
Sun Dec 17, 2017 6:31 am
Forum: Hardware
Topic: Gold Card / Super Gold Card ROM patching...
Replies: 29
Views: 3909

Re: Gold Card / Super Gold Card ROM patching...

Pr0f wrote:In the Qemulator, does the Gold Card option effectively mimic this behaviour ?


It doesn't. Q-emulator only emulates a little bit of the Gold Card hardware, just enough to enable the GC version of SMSQ/e to run.
by M68008
Sat Dec 16, 2017 4:43 am
Forum: Hardware
Topic: Gold Card / Super Gold Card ROM patching...
Replies: 29
Views: 3909

Re: Gold Card / Super Gold Card ROM patching...

From memory of looking at the GC code long ago, it has a different table of patches for each version of the QDOS ROM. While SMSQ/E replaces QDOS, the GC uses the original (but patched) ROM, so it needs to apply many patches. I didn't look into all of them, but some replaced timing-related code (the ...
by M68008
Sat Dec 16, 2017 4:34 am
Forum: QL Emulation
Topic: Q-emulator add on hardware api
Replies: 2
Views: 1258

Re: Q-emulator add on hardware api

The API is meant to help HW developers simulate their device for testing the drivers. It's available on Windows, by writing a DLL and placing it in a directory named 'Extensions' inside the directory where QemuLator.exe is. Here is some starter code for the DLL: http://www.terdina.net/ql/soft/HwExte...
by M68008
Sat Dec 16, 2017 3:56 am
Forum: Software & Programming
Topic: IO.FLINE doubts and emulation
Replies: 14
Views: 2021

Re: IO.FLINE doubts and emulation

Depends on where you intercept the call (LBYTES, TRAP#3, device driver I/O routine, or some other place)... If you intercept at the TRAP or device driver I/O routine, A1 should be a valid RAM address. If not, you may have a bug somewhere else.
by M68008
Wed Nov 29, 2017 10:51 pm
Forum: Hardware
Topic: ULA ZX8301 - TV Picture Capabilities
Replies: 62
Views: 12563

Re: ULA ZX8301 - TV Picture Capabilities

Nasta wrote:with VSYNCH occuring at approximately line 288, if someone needs a precise number I'll re-measure this.


Do you know at what point IPL1 is triggered? At the same time as VSYNCH?