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3.9.1. Pattern layout table settings
The pattern layout table is a map of the screen (per screen image). Every byte
location of the screen contains color code for one single dot. This is bitmap graphics mode,
and there's no pattern generator table.
0
0
0, 0
1
0, 1
...
...
191
0, 191
...
...
211
0, 211
↑
Y
MSB
7
0
1
Green
255
256
27134
27135
Pattern layout table base address is stored in register R#2, and corresponds to the
cell (0, 0) in the picture above.
MSB
R#2
**Note that in G6 and G7 modes location of bit A16 differs
© 1985 ASCII CORP. / NIPPON GAKKI CO.
1
2
1, 0
2, 0
1, 1
2, 1
...
...
...
...
1, 191
2, 191
...
...
...
...
1, 211
2, 211
6
5
4
Color code for (0, 0)
Color code for (1, 0)
Color code for (255, 0)
Color code for (0, 1)
Color code for (254, 211)
Color code for (255, 211)
7
6
5
0
0
A16
**
Columns
3
3, 0
...
3, 1
...
...
...
...
X, Y
...
...
...
...
...
...
...
...
3
2
1
Red
4
3
2
1
1
1
Page 60 of 108
255
254, 0
255, 0
...
255, 1
...
...
...
...
...
255,191 LN=0
...
...
...
...
...
255,211 LN=1
0
LSB
Base address
Blue
1
0
LSB
1
1
Pattern layout
table base
address
© 2010-2015 Eugeny Brychkov
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