NEC µPD72257 Preliminary User's Manual page 271

Graphics controllers
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Drawing Engine
8.9.4.4
Note
Access
Address
Index
Initial Value
31
30
29
28
15
14
13
12
Bit
Bit name
31 to 0
LmBAND[31:0] Limiter m band width parameter
DRWLmBAND - Limiter m band width parameter
Postfilter
First two limiter outputs can be routed through an additional unit before clamping
in order to mirror their gradient and form a 'band' instead of the usual 'halfplane'.
When band output filtering is enabled for limiter 1 (see
DRWCONTROL.BAND1ENABLE) this register stores the 16:16 fixed point inner
width of band region.
m = 1 to 2
This register can be written in 32-bit units.
DRWL1BAND: <DrwE_Base> + 58
DRWL1BAND: 22, DRWL2BAND: 23
0000 0000
. This register is initialized by any reset.
H
27
26
25
24
LmBAND[31:16]
11
10
9
LmBAND[15:0]
Function
Preliminary User's Manual S19203EE1V3UM00
, DRWL2BAND: <DrwE_Base> + 5C
H
23
22
21
W
8
7
6
5
W
Chapter 8
20
19
18
17
4
3
2
1
H
16
0
271

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