44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Cool, thanks!
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Hmmm...well, xroar seems to execute the unchanged 44-color (and 8-color) code more-or-less correctly, even with PAL configurations. I had expected that the extra horizontal sync pulses inserted to turn the NTSC-compatible output of the 6847 into a PAL-compatible signal would be visible through the PIA-controlled interrupt line, and would therefore need to be accounted for in the timing code. Maybe that isn't the case?
I definitely need someone to try this code on a PAL Dragon or CoCo (or both)...
I definitely need someone to try this code on a PAL Dragon or CoCo (or both)...
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
I'm quite busy ATM, but will try them for you if no one else tests them over the next few days.
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
If you can provide a .CAS or a .VDK/.DSK file with the test program, I'll be glad to test it.
Actually due to my setup, a .CAS file would be better.
Best regards,
Rob
Actually due to my setup, a .CAS file would be better.
Best regards,
Rob
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
There are WAV files available already. Have you tried those? The xroar emulator seems to consume them FWIW.
What is your setup? It seems like a WAV file would be more friendly to loading on a real machine?
What tool do you use for building CAS files? The cecb tool from Toolshed doesn't seem to want to cooperate...
What is your setup? It seems like a WAV file would be more friendly to loading on a real machine?
What tool do you use for building CAS files? The cecb tool from Toolshed doesn't seem to want to cooperate...
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Attached below are .CAS conversions (XROAR) of all the .WAV files for Robcfg, or anyone else would like to test them.
- Attachments
-
- 44_colour_vdgtricks.zip
- (64.43 KiB) Downloaded 226 times
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Great, thanks!
I'll try to test them today when I come back home.
I'll try to test them today when I come back home.
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Good evening!
Here you have the result of the test programs on a real Dragon:
Paltest1
Paltest2
YouTube Link
Testflip44
YouTube Link
Testg6c8
Testsg24
The Paltest2 and Testflip44 do flicker more than you can appreciate in the video, but also the effect is a bit better.
If you need to do more test, I'll be glad to help.
Best regards,
Rob
Here you have the result of the test programs on a real Dragon:
Paltest1
Paltest2
YouTube Link
Testflip44
YouTube Link
Testg6c8
Testsg24
The Paltest2 and Testflip44 do flicker more than you can appreciate in the video, but also the effect is a bit better.
If you need to do more test, I'll be glad to help.
Best regards,
Rob
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
Awesome! Thanks for the testing and the pics/video! The effects look more-or-less similar to what xroar showed.
It looks like the timing code is actually working, even though it thinks it is running on NTSC. I guess the extra hsync signals inserted for adapting to PAL video aren't visible to software on the CoCo/Dragon?
The flicker is a bit unavoidable, given the technique used in the paltest2 and testflip44 programs. I imagine that the flicker is worse on the 50 Hz PAL displays than on the 60 Hz NTSC displays. It is less than ideal, but I don't know that it can be "fixed" either...
Anyway, at least I know that you guys can run the code as-is! Hopefully testg6c8 is impressive enough to make-up for the flicker of testflip44?
It looks like the timing code is actually working, even though it thinks it is running on NTSC. I guess the extra hsync signals inserted for adapting to PAL video aren't visible to software on the CoCo/Dragon?
The flicker is a bit unavoidable, given the technique used in the paltest2 and testflip44 programs. I imagine that the flicker is worse on the 50 Hz PAL displays than on the 60 Hz NTSC displays. It is less than ideal, but I don't know that it can be "fixed" either...
Anyway, at least I know that you guys can run the code as-is! Hopefully testg6c8 is impressive enough to make-up for the flicker of testflip44?
Re: 44 on-screen colours from a CoCo 1/2 or Dragon 32/64
I posted some pics of my NTSC CoCo displaying a variety of other images in 44 colors...
http://www.facebook.com/media/set/?set= ... 13314f06c9
http://www.facebook.com/media/set/?set= ... 13314f06c9