Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!uflorida!reef.cis.ufl.edu!jdb
From: jdb@reef.cis.ufl.edu (Brian K. W. Hook)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Help wanted to install a VGA card correctly
Message-ID: <27990@uflorida.cis.ufl.EDU>
Date: 12 Apr 91 16:51:35 GMT
References: <1991Apr12.160629.2075@cs.cornell.edu>
Sender: news@uflorida.cis.ufl.EDU
Organization: UF CIS Dept.
Lines: 32

In article <1991Apr12.160629.2075@cs.cornell.edu> ladanyi@cs.cornell.edu (La'szlo' Lada'nyi) writes:
|>I just bought an IBM/AT clone with a Paradise VGA card. (I beleive 
|>it is PVGA-16.) The card clearly has the maximum 512K (I see the 
|>chips), but all of my program says, that it has only 256K. I 

As far as I know, if you have a VGA card most sysinfo programs (such as SI)
will tell you that you have 256K since they check the same low memory area
in the BIOS area.

|>I have the suspicion that the video memory start address is 
|>setted incorrectly. Norton 5.0 Sysinfo says that it starts at 
|>0xB800, however the card's manual says it should start at 0xA000.
|>Is this really a possible problem? 

No, this isn't a problem.  The start of your video address depends on your
mode.  A000 is the start in graphics mode (EGA and VGA) and B800 is the
start of text mode (at least color text) and CGA graphics.  The card should
doa Hercules emulation or an MDA emulation, and that will have a start of
B000.

|>I hope somebody can answer my question.

The best thing to do to test the card is run one of the diags that
should've come with the card.  I think that it should be called
RESTEST.EXE.  Also, there is a program called VDIAGS that might work.  If
your card can do 1024x768x16 or higher, or do 640x480x256 or higher, then
you have 512K.

Brian