Rastergraf VFX-M User Manual page 69

Rastergraf
Soft configuration will only be used by BIOS code to setup a default video
configuration. GLP does not use the Soft Configuration Data (SCD)
directly to control video mode programming. However, the SCD can be
accessed from GLP via the pk_get_attribute and pk_set_attribute calls.
The following soft configuration variables are defined:
General video parameters
Name
w
h
p
f
P
Video timing override
Name
pf
hf
hp
hs
hb
vp
vs
vb
Register Override *
Name
Wxx
Gxx
Dxx
Cxx
Ixx
Oxx
Rxx
* Note: Name denotes an offset (in hex) from the RBASE_n or
RAMDAC base register address.
4-26 Troubleshooting
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Description
width
height
pixel format
vertical sync frequency
pitch
Description
Pixel frequency
Horizontal frequency
Horizontal front porch
Horizontal sync
Horizontal blanking
Vertical front porch
Vertical sync
Vertical blanking
Description
RBASE_W register override
RBASE_G register override
RBASE_D register override
RBASE_C register override
RBASE_I register override
IO register override
RAMDAC register override
Units
pixels (640 default)
pixels (480 default)
8 (default), 16, 555, or 24
Hz (60 default)
pixels (default to width)
Units
MHz
KHz
microseconds
microseconds
microseconds
milliseconds
milliseconds
milliseconds
Values
32-bit (hex)
32-bit (hex)
32-bit (hex)
32-bit (hex)
32-bit (hex)
32-bit (hex)
byte (hex)