In article <Bxrtrr.LMJ@news.cso.uiuc.edu>, rg9538@ehsn2.cen.uiuc.edu (Ronald E Garnett) writes:
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>I bought one a few weeks ago to replace my old speedstar+ card. The new card seems to have a few problems. I want to see iif these are normal (known) problems or not.
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>First, in 1024x768x256 mode, I get stray pixel problems fairly often. SMall groups
>of pixels that don't match the background. They change when I somehow force the
>screen to do a rewrite. (I am speaking of Win 3.1 in this part)
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>Second, in DOS, I get stray characters left in the left margin of the screen. They
>replace the leftmosst character with a |, but the actual character is still there.
>Only the display of the character is hosed.
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>Anyone have similar problems?
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>Note: 486-33, 12 MHz ISA bus, Nanao 9070U monito
Yes, there's your problem. You're running your ISA bus 50% faster than
specification. I've fooled with my IO Bus speed taking it to 10 and 13.3Mhz
respectively (I have a 40Mhz 386, and that corresponds to clk/4 and clk/3),
and I also get the dropouts with any video card I've tried, including the
SS24X.
The solution is simple. You can slow your bus down to 8Mhz and get perfect
video, or you can run your bus up nice and high, after removing the
zero-wait-state jumper on the card to allow it to insert a wait state at the
50% higher clock, and it will also work fine at that speed.
