18-23
MB86R02 ‘Jade-D’ Hardware Manual V1.64
18.6.3 Display Color
Data processed by the display controller is of the following formats:
18.6.3.1
Indirect Color (8 bits/pixel)
Palette RAM’s index. The index is displayed after being converted by Palette RAM to the image data
where each of RGB (R, G and B) is 6 bits. The palette that can be used depends on the layer.
A
8 bit
R
G
B
i-th entry
i
1 bit
6 bit
6 bit
6 bit
Palette RAM
256
entries
If the pixel value is i, the RGB output value is determined by the i-th entry of the pallet.
The precision of each color element of the palette is 6 bits. The basic precision of display output is 8
bits for each of RGB and each color element of the palette is output to be displayed with 2 bits shifted
toward the MSB side.
18.6.3.2
Direct Color (16 bits/pixel)
The level of each of RGB is expressed by 5 bits. The basic precision of display output is 8 bits for
each of RGB and the value of each color element is output to be displayed with 3 bits shifted toward
the MSB side.
There are the ARGB and RGBA formats.
format
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ARGB
A
R
G
B
RGBA
R
G
B
A
The A bit determines whether display blend is enabled or disabled.
18.6.3.3
Direct Color (24 bits/pixel)
The level of each of RGB is expressed using 8 bits. In fact, 1 pixel is expressed by 32 bits.
There are the ARGB and RGBA formats.
format
31
30
...
25
24
23
22
...
17
16
15
14
...
9
8
7
6
...
1
0
ARGB
A
ignored
R
G
B
RGBA
R
G
B
ignored
A
In ARGB format, whether A = 0 or A
≠
0 (whether blend enabled or disabled) is determined using a 1-
bit value.
Summary of Contents for MB86R02
Page 24: ...MB86R02 Jade D Hardware Manual V1 64 ...
Page 76: ...3 2 MB86R02 Jade D Hardware Manual V1 64 Figure 3 1 Memory map 1 ...
Page 77: ...3 3 MB86R02 Jade D Hardware Manual V1 64 Figure 3 2 Memory map 2 ...
Page 167: ...8 8 MB86R02 Jade D Hardware Manual V1 64 ...
Page 214: ...11 7 MB86R02 Jade D Hardware Manual V1 64 15 16 cycles initial value ...
Page 497: ...18 139 MB86R02 Jade D Hardware Manual V1 64 VSYNC is output 1 dot clock faster than HSYNC ...
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Page 682: ...22 2 MB86R02 Jade D Hardware Manual V1 00 FUJITSU PROPRIETARY AND CONFIDENTIAL ...
Page 811: ...29 24 MB86R02 Jade D Hardware Manual V1 64 ...