
145
(Color register)
Register
Address
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
LRs
LRde
LGs
LGde
LBs
LBde
015ch
0160h
0164h
0168h
016ch
0170h
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
0
S
Int
Int
Int
Int
Int
Int
Frac
Frac
Frac
Frac
Frac
Frac
Address
Offset from DrawBaseAddress
S
Sign bit or sign extension
0
Not used or 0 extension
Int
Integer or integer part of fixed point data
Frac
Fraction part of fixed point data
Sets color parameters for line drawing. These parameters are used in the
Gouraud shading mode.
LRs
R value at line draw start vertex
LRde
Differential value of R element
LGs
G value at line draw start vertex
LGde
Differential value of G element
LBs
B value at line draw start vertex
LBde
Differential value of B element
7.1.8 Pixel Plot Registers
Each register is used by the drawing commands. The registers cannot be
accessed from the CPU or by using the SetRegister command.
Register
Address
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
PXdc
PYdc
PZdc
0180h
0184h
0188h
0
0
0
0
0
0
0
0
0
0
0
0
Int
Int
Int
0
0
0
Address
Offset from DrawBaseAddress
S
Sign bit or sign extension
0
Not used or 0 extension
Int
Integer or integer part of fixed point data
Frac
Fraction part of fixed point data
Sets coordinate parameter for pixel plot. The foreground color is used.
PXdc
Set X-coordinate position
PYdc
Set Y-coordinate position
PZdc
Set Z-coordinate position