Fujitsu MB86R02 Jade-D Hardware Manual page 577

MB86R02 'Jade-D' Hardware Manual V1.64
MDR7 (Mode Register for Extension)
Register
DrawBaseAddress + 43C
address
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
R/W
Initial value
This register used for "Gray Scale Gouraud Shading". This register is able to use only in 8 bit / pixel
mode.
Bit 4 GG (Gray scale Gouraud Shading)
Sets gray scale gouraud shading mode
0:
1:
Note: This register is used for gray scale gouraud shading. This register is changed by internal
processing. Please don't set these bits except GG bit.
In case of gray scale gouraud shading drawing, please set this register to the follows.
1. Set this register to 0x00000050 before drawing.
2. Set this register to 0x00000040 after drawing.
H
Hard mask on (compatible Orchid)
Hard mask off (extension mode)
GG
W
0
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