View Full Version : Switching off CGX output when using native modes
05-12-2007, 11:03 AM
Is there a way to "kill" the CGX output of the CVPPC when the OS switches to a native video mode?
I'm seeing if I can get the CV64/3D scandoubler to work with the CVPPC, but when the OS switches to a native screenmode the CGX screen freezes and remains visible.
05-12-2007, 11:17 AM
I think there's a tooltype or an env variable which tells it whether or not to keep non-visible screens in memory for fast switching. If you turn that off then it might unload the CGX screen from memory and blank the display. Not sure though.
05-12-2007, 12:59 PM
or you can use a patched cgx4 library to control pin13 of the parallel port, so with a transistor u can automatically open/close it...
here is the Multimedia & design monitor switcher that can be controlled in such a way. http://www.mmd-shop.de/m-switch.htm
with this, I have a full auto-switching grex/aga display.
info on the patch is here: http://people.freenet.de/CHRAmiga.de/Monswit.html
05-12-2007, 08:05 PM
I've got an idea of how to solve this involving sync signals, a single transistor and a small vero board. :idea:
I think I need to think about it for a bit before reaching for the sodlering iron, as I should have been asleep 3 hours ago.
05-13-2007, 04:47 AM
Sounds interesting - keep us up to date :-)
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