MB86296 Datasheet, PDF (292/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
SHO (SHadow Offset)
Register
address
DrawBaseAddress + 470H
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
SHOFFS
R/W
RW
Initial value
Don’t care
This register sets the offset address of the shadow relative to the body primitive at drawing with
shadow.
At body drawing, this offset address is set to “0”; at shadow drawing, the offset address calculated
from each offset value of the X coordinates and of the Y coordinates is set. This register is
hardware controlled.
ABR (Alpha map Base)
Register
address
DrawBaseAddress + 474H
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
ABASE
R/W
RW
R0
Initial value
Don’t care
0
This register sets the base address of the alpha map.
FC (Foreground Color)
Register
address
DrawBaseAddress + 480H
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
FGC
R/W
RW
Initial value
0
This register sets the drawing foreground color. This color is for the object color for flat shading
and foreground color for bitmap drawing and broken line drawing. All bits set to “1” are drawn in
the color set at this register.
8 bit color mode:
Bit 7 to 0 FGC8 (Foreground 8 bit Color)
Sets the indirect color for the foreground (color index code).
Bit 31 to 8 These bits are not used.
16 bit color mode:
Bit 15 to 0 FGC16 (Foreground 16 bit Color)
This field sets the 16-bit direct color for the foreground.
Note that the handling of bit 15 is different from that in ORCHID.
Up to ORCHID, bit 15 is “0” for other than bit map and rectangular drawing, but starting
with CORAL, the setting value is reflected in memory as is. This bit is also reflected in bit
15 of the 16-bit color at Gouraud shading.
Bit 31 to 16 These bits are not used.
MB86296S<Coral-PA>
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Specification Manual Rev0.1