Screen flickering problem while installing Xenix

[Tony Tran]

I was trying to install SCO 2.3.1 the other day, and as the system booted
up from the diskette, it came up with a banner, and a few seconds later,
the screen flickered and I had to abort the installation.

The PC was a PC-386 clone with a Video-7 VGA/EGA card, and a ITT EGA
monitor with a 40MB Seagate drive. The color was OK under DOS.

Did I mis-adjust some jumpers on the graphic card or did I miss
a driver somewhere? 

Any help/hints on this would be appreciated.

Tony
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