Geometry Control Register - Fujitsu MB86R02 Jade-D Hardware Manual

MB86R02 'Jade-D' Hardware Manual V1.64
18.11.14

Geometry control register

GCTR (Geometry Control Register)
Register
GeometryBaseAddress + 00
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
Reserved
R/W
Initial value
The flags and status information of the geometry section are reflected in this register.
Note that the flags and status information of the drawing section are reflected in CTR.
Bit 1 and 0 PS (Pixel engine Status)
Indicates status of pixel engine unit
00
01
10
11
Bit 5 and 4 SS (geometry Setup engine Status)
Indicates status of geometry setup engine unit
00
01
10
11
Bit 9 and 8 GS (Geometry engine Status)
Indicates status of geometry engine unit
00
01
10
11
Bit 12 FE (FIFO Empty)
Indicates whether the data is contained in display list FIFO (DFIFOD)
0
1
Bit 13 FF (FIFO Full)
Indicates whether display list FIFO (DFIFOD) is full or not
0
1
18-236
H
Rsv
FO
RX RX
RX
X 0 X
Idle
Processing
Reserved
Reserved
Idle
Processing
Processing
Reserved
Idle
Processing
Reserved
Reserved
Data in DFIFOD
No data in DFIFOD
DFIFOD not full
DFIFOD full
FCNT Rsv
NF FF FE
RX RX
RX RX RX
011111 0 0 1 X
GS Rsv SS Rsv PS
R RX R RX R
00 X 00 X 00