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VVESA.TXT
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1993-01-22
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VVESA.TXT January 22, 1993
for VESA Super VGA BIOS Extension VVESA.COM
=======================================================================
VVESA.COM is a Terminate and Stay Resident (TSR) program. It is
the implementation of the VESA Super VGA BIOS Extension Standard
#VS911022.
VVESA is not a driver. It is a program which enables your video
board to be used with VESA compatible software. Consult your
software manual or your software manufacturer's Technical Support
to see if a VESA driver is available for your software.
Install your software for VESA Super VGA. Then run VVESA before
running your VESA compatible software. If you prefer, a batch
file can be written to invoke VVESA and then your software. The
resident portion of VVESA only consumes a small amount of memory.
To run Window 3.1 with VESA 800x600 16-color driver in the 7-bit
video mode 6A, VVESA is not required. To remove VVESA from
memory, type: VVESA OFF.
Here is a list of VVESA advanced command line keywords:
OFF: Remove the driver from the system memory.
PAN: Enable Linear Address
It allows user to pan or scroll within the entire
display memory. Standard VGA will wrap around at the
end of 64K in planar mode. Linear address is disabled
at default.
55rw Force single page read & write mode
The Write Page number is set to Read Page number when a
display mode is initialized. (Note that only display
controller 28800-5 or higher is default to dual page
mode, i.e. the writeable and readable windows can be
programmed independently)
For example, to enable driver to view display memory at
upper 512KB, type:
VVESA PAN <enter>
Then run your VVESA application.
The following VESA modes are supported:
MODE RESOLUTION MEMORY MEMORY
NUMBER /COLORS REQUIRED MODEL
100h 640x400 /256 512KB packed pixel
101h 640x480 /256 512KB packed pixel
102h 800x600 /16 256KB 4-plane planar
103h 800x600 /256 512KB packed pixel
104h 1024X768 /16 512KB 4-plane planar
105h 1024X768 /256 1MB packed pixel
108h 80x60/16 Text mode
109h 132x25/16 Text mode
10Ah 132x43/16 Text mode
110h 640x480/32768 1MB packed pixel
113h 800x600/32768 1MB packed pixel
Note that some display adapters may not be capable of displaying
all the modes listed above. Check the user's manual of your
display adapter for the available modes.
=======================================================================
VESATEST Utility
There is a utility program to check which modes are supported on
your display adapter, run VESATEST after loading VVESA. This
utility will provide a listing of all VESA modes available on
your card.
=======================================================================
Programmers requiring more information about VESA standards may
obtain copies of the specifications by writing or calling:
VESA
1330 South Bascom Ave., Suite D
San Jose, CA 95128
(408) 971-7525