[comp.sys.ibm.pc.hardware] Funny VGA problems

fish@vpnet.chi.il.us (Gil Winograd) (08/12/90)

I just recently bought a 386SX system (1Meg RAM) from Mirage Computers in
California (ad in Computer Shopper). With the computer, I bought the Super
VGA option, which is a Paradise 1024i OEM card (256K RAM) and a Loop monitor.
(The card name is EMK-16 VGA1024). The problem I have is: Occasionally when
I am scrolling up and down through text, some of the attribute bytes on the
text screen get messed up, so that, for no apparent reason, there will be
a blinking "a" or a green "h" in the middle of the screen. The text itself
is never garbled or destroyed, just its associated attribute byte. This
happens most often in TELIX when I use ALT-B to scroll back text, but has
also happened to a lesser extent in Turbo C. All VGA diagnostics I have run
say that my card is in perfect working order, operating in 16 bits with full
capabilities, etc... The only advice I received so far from Mirage is
to check my DIP switches, which I did. Any other advice?

Thanks, -* Gil
fish@vpnet.chi.il.us

kji@vpnet.chi.il.us (Ken Isacson) (08/12/90)

Sounds like a problem that I had running an OLD ega card in a very
fast 286.  The sure speed of the PC messed up the display.  I 
would recommend calling Mirage back and let them know about your
problem.  See what they suggest, if your problem is unique, maybe
they can swap a new card for you.  Or if your problem is not
uniqe, maybe they will have fix for you.