MB86293 Datasheet, PDF (210/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
MDR7 (Mode Register for Extension)
Register
address
DrawBaseAddress + 43CH
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
LTH EZ GG PGH PTHPZH
R/W
Initial value
W WW
1 00
W WW
0 00
This register controls the BLT mode.
Bit 0
PZH (Polygon Z Hard mask)
Sets polygon-fill Z reference mode
0:
Hard mask on ( compatible Orchid)
1:
Hard mask off ( extension mode)
Bit 1
PTH (Polygon Texture Hard mask)
Sets polygon-texture mode
0:
Hard mask on ( compatible Orchid)
1:
Hard mask off ( extension mode)
Bit 2
PGH (Polygon Gouraud shading Hard mask)
Sets polygon-gouraud shading mode
0:
Hard mask on ( compatible Orchid)
1:
Hard mask off ( extension mode)
Bit 4
GG (Gray scale Gouraud Shading)
Sets gray scale gouraud shading mode
0:
Hard mask on ( compatible Orchid)
1:
Hard mask off ( extension mode)
Bit 5
EZ (Extend Z)
Sets new Z mode
0:
Z 1 bit extend off ( compatible Orchid)
1:
Z 1 bit extend on ( extension mode)
Bit 6
LTH (Line Texture Hard mask)
Sets line texture mode
0:
Hard mask on ( compatible Orchid)
1:
Hard mask off ( extension mode)
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( GG bit and LTH bit equal to 1) before drawing.
2. Set this register to 0x00000040( LTH bit equal to 1) after drawing.
MB86293 CORAL_LQ
Graphics Controller
210
Specifications Rev. 1.1