Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!rutgers!njin!uupsi!sunic!tut!funic!santra!santra!iisakkil From: iisakkil@niksula.hut.fi (Mika R Iisakkila) Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: Hercules Graphics Plus and VGA problem Message-ID: Date: 6 Aug 90 19:51:19 GMT References: <10305@accuvax.nwu.edu> <5505@uwm.edu> Sender: news@santra.uucp (Cnews - USENET news system) Organization: Helsinki University of Technology, Finland Lines: 34 In-Reply-To: bnk@csd4.csd.uwm.edu's message of 2 Aug 90 13:40:40 GMT In article <5505@uwm.edu> bnk@csd4.csd.uwm.edu (Bob N Keenan) writes: > In article <10305@accuvax.nwu.edu> kaojh@delta.eecs.nwu.edu (Jung-Hong Kao) writes: > > Hi : > > I have problem to install Evergraphics Plus ( a Monochrome > > graphics adapter) and VGA in my PC clone at the same time. > > When I put both on my PC, it got problem to bootstrap. > one video card at once on the board. In fact, I have never heard of > any one trying this or wanting to try. But, if anyone else out there > knows different, let me know- I love to learn new things! Ok, here goes: I have both an EGA card and a Hercules mono graphics card on my 286 machine. The EGA card (Ultimate EGA Plus, a weird system...) has jumpers for configuring it as a primary or secondary display adapter. The machine will boot up with the primary adapter, and it's possible to switch from the EGA to Herc with the dos command 'mode mono'. 'Mode co80' will change back to EGA. You'll also have to run setup and tell the cmos ram what type the primary display is. I haven't had any problems with this configuration. Both of the displays must be in text mode for simultaneous video, though - if you switch to graphics, the other display goes blank. I guess this happens because the graphics memory areas overlap - I have never really thought of it. The main use of the dual monitor system is debugging - at least Turbo Debugger by Borland is able to show the output from the program being debugged on the other screen, and the debugger itself on the other. -- Treasury counter-intelligence Kennedy Cocaine Uzi [Hello to all my fans in domestic surveillance] strategic NSA domestic disruption smuggle CIA $400 million in gold bullion cryptographic supercomputer El Salvador Mossad DES Ft. Bragg Marxist Nazi genetic Nancy Reagan