I want play around with the enhanced features of my Fahrenheit 1280 
video board (S3-based), but in order to do this I need to be able to access 
portsabove 0x3ff.  Ports above 0x3ff are not mapped by Linux into the per-
process IO bitmap, so I cannot use the ioperm system call.  I looked through 
the Linux source code and saw code for an 'iopl' system call, but I was 
unable to get this to work (Linux 0.97)--the call was not present in the C
libraries.  Could someone tell me how to use the iopl system call?  Or 
inform me of another method to access high ports?  I presume that writing an
assembly language routine to set the iopl directly by pushing/popping the 
flags register will not work if it is executed by a user process . . .

Also, does anyone have any S3 hacks for linux that they would be willing to
share?

Thanks,

Chris Laurel
CHRISL@county.lmt.mn.org