🚀 go-pugleaf

In <2cqxmn+@rpi.edu> floydb@sun01.admin.rpi.edu (Barry B Floyd) writes:

>antti@clinet.fi (Antti H{m{l{inen) writes:

>>I recently got a new Trident 8900c SVGA-adapter. I have encounterded some
>>problems with it in the 800x600-256-mode: vertical lines on the screen
>>(width 1 pixel - height 50-100 pixels).

>>Configuration:
>>386-25 / 4MB
>>Trident 8900C (JAX 8212) with 1MB
>>(Monitor: Tystar 1415)
>>MS-Dos 5.0
>>Windows 3.10

>>Anybody else had some kind of troubles - like to get your opinnion on this.

>>/Antti

>We have had similar (1 pixel vertical white lines) problems with our
>Trident boards in our Bitwise 386-25 boxes. 

>Fortunately, these problems only occur when using MS-Excel 3.0 or 4.0.
>We have Win 3.0 and Win 3.1 on various machines, all demonstrate the
>same problem. 

>My guess (grain of salt taken) is that Microsoft sought to "optimize"
>Excel's performance at the risk of SVGA compatibility. They may have
>used some more direct access to hardware methods which shows up an
>incompatibility with the Trident chip.
> 
>If anyone has heard from Trident or Microsoft regarding a solution
>please post it to the group.
> 
>barry
> 

I have a 486DX/50 8MB, Dos 5.0, Win 3.1, Trident 8900C 1MB SVGA, and  I
haven't noticed any problems with the Trident 800x600x256 driver that
I have currently installed (though I can't remember exactly which one
is installed, as several were supplied).

As an aside, I ran the Texas Instruments 'Wintach' benchmark program
(this tests various features of graphics performance - ie 'typical'
spreadsheet, wordprocessing, painting operations)
and tried ALL the trident drivers, and on the spreadsheet tests
I found that some drivers did show up spurious lines on the display.

In practice, I have had no problems at all.

Chris
-- 
Dr. Chris Gatcombe
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