NEC µPD72257 Preliminary User's Manual page 285

Graphics controllers
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Drawing Engine
8.9.6.2
Access
Address
Index
Initial Value
31
30
29
28
15
14
13
12
Bit
Bit name
31 to 16
SSD
15 to 0
PITCH
DRWPITCH - Framebuffer pitch and spanstore delay
This register can be written in 32-bit units.
<DrwE_Base> + 7C
H
31
0000 0000
. This register is initialized by any reset.
H
27
26
25
24
11
10
9
8
Function
Spanstore delay
Pitch of the framebuffer. A negative width can be used to render bottom-up instead of
top-down.
Preliminary User's Manual S19203EE1V3UM00
23
22
21
SSD
W
7
6
5
PITCH
W
Chapter 8
20
19
18
17
4
3
2
1
16
0
285

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