Hi Rich, Or another method would be to download the Minerva source code, which is GPL and see how the second screen is programmed correctly and implemented it on a QDOS QL.
There maybe errors in older books like the QLAUG. Probably The QDOS Companion by Andrew Pennel, QL Technical Guide and Minerva Manual would be a better source of information. Derek Rich Mellor wrote: > On Mon, 26 Feb 2007 20:18:05 -0000, omega <[EMAIL PROTECTED]> wrote: > > >> Thank you guys for suggestions. Especially George, Daniele, Dilwyn, Tony >> and others. >> >> I need to work on the routines with your hints and test the results. I >> am sorry for lack of response, simply out of time. Derek and Robert: I >> know the example code in advanced QL user guide. I just want to use >> plain standard QL. If it would appear to be impossible with JS,JM,MG >> roms, I'll switch to Minerva. >> >> > > Hi Jan, > > The code in the advanced QL user guide does allow you to use the dual > screen mode on a standard QL. By entering supervisor mode, the system > variables are no longer accessible and the space (32768 bytes?) at $28000 > can be used as the second screen. However, you have no access to TRAP > calls (if I recall correctly) - it has been a long long time since I > looked at this. > > > > _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
