Adrian, there is (I think) not a single function that allows to retrieve this information, but some strong hints from the system that GD2 is there:
- Use SD.EXTOP and check offset $64 of the channel table - this gives you the number of bytes per scanline. - use MT.DMODE to retrieve the screen mode Divide scan line length*8 by the number of colour bits for the detected mode, should give you a hint on screen width when you cannot detect PE (The screen height is, I think not easy to detect when no PE is present) If you can detect PE, use iop.flim to get width and height from the PE directly. The only system with resolutions <>512x256 and no PE is, to my knowledge, uQLX. Dilwyn's page has the wonderful display_cde toolkit that incorporates this (and a few other display related calls into a wonderful S*Basic extension. Cheers, Tobias -----Original-Nachricht----- Subject: [Ql-Users] Help: Function to tell whether display is better than QL standard Date: Mon, 28 Feb 2011 15:01:55 +0100 From: "Adrian Ives" <adr...@acanthis.co.uk> To: <ql-us...@q-v-d.com> I know I've seen this somewhere but, as usual, when you really want something it refuses to be found! I'm looking for a function to use in S*BASIC that will tell me if the display driver is capable of providing resolutions greater than the QL's mode 4 & 8 defaults - it would be enough just to know if the display driver is GD2 or not. It has to run on any QL system, including clones and emulators. Can anyone help? Thanks, Adrian _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
