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VSPEED.EXE reports the video throughput for bit blit operations from DRAM
to VRAM for both the banked VGA and Linear Frame Buffer (LFB) mechanisms. 
To test the LFB you should have a VESA 2.0 conforming driver. If your VESA
driver is not 2.0 compliant VSPEED will attept to determine the LFB
address by querying the PCI configuration registers.  If neither method of
determining the LFB address succeeds, you can supply an LFB address (in
hex) on the command line.  Otherwise the LFB will not be tested.

For your information (and to aid in debugging if there is a problem)
VSPEED will display information about the LFB address once it has started.
Press RETURN to continue on with the program.

Some VESA drivers appear to return an incorrect LFB address.  If you
experience difficulties with VSPEED try using -l or -L on the command line
to eliminate the linear frame buffer test.  For example:

	VSPEED -l

will test only the banked VGA mechanism.

	VSPEED

will test both the banked VGA and the linear frame buffer determined from
the VESA driver of the PCI config registers.

	VSPEED FF000000

will test both the banked VGA and the linear frame buffer using the user
supplied address.

VSPEED tests each of the two mechanisms for 5 seconds regardless of the
bus speed.  This should increase the accuracy of the results on faster
busses and decrease the waiting time on slower busses.

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Sample VSPEED results from a 200MHz Pentium Pro motherboard with the B0
stepping of the 82450, a 4MB Matrox MGA Millennium, and FASTVID patches:

Copy DRAM to banked VGA:          87.72 million bytes per second
Copy DRAM to linear framebuffer:  93.46 million bytes per second

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