[ros-kernel] David Recent Video Card Support Changes

[welch at boltblue.com]

Quoting Steven Edwards <steven_ed4153 at yahoo.com>:

> Hello,
> With the recent changes to videoprt.sys I can now load my laptops S3
> savage MX driver for Windows NT4 and Windows 2k under ReactOS. It
> doesnt properly draw anything on the screen but If I start with cmd.exe
> as my shell and then run winhello.exe the screen refreshes and then
> turns blue. hitting Alt-F4 returns me to the console so I know the
> application is loading taking input. Do you guys think the problem with
> it not displaying anything could be related to VideoPrtVerfyAccess
> ranges? I still get a message about it being unimplemented.
> 
It's unlikely to be VideoPortVerifyAccessRanges. You could try running
with the kernel commandline option '/DEBUGPORT=FILE' and see if there are
any unimplemented functions in win32k.sys called by the s3 display driver.

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