8.9 Drawing Engine Registers
8.9.1 Drawing Engine registers overview
The Drawing Engine is controlled and operated by means of the registers in the
table below.
Index
In addition to the address offset also the index is given, that is used to address
the register in display list mode. The index is the address offset divided by 4.
Table 8-3 Drawing Engine registers overview
Register function
Name
Address
Index
Control registers:
Geometry control register
DRWCONTROL
<DrwE_Base> + 00
H
0
Surface control register
DRWCONTROL2
<DrwE_Base> + 04
H
1
Interrupt control register
DRWIRQCTL
<DrwE_Base> + C0
H
48
Cache control register
DRWCACHECTL
<DrwE_Base> + C4
H
49
Status control register
DRWSTATUS
<DrwE_Base> + 00
H
n.a.
a
Hardware version and feature
set ID
DRWHWREVISION
<DrwE_Base> + 04
H
n.a.
a
Colour registers:
Base colour register
DRWCOLOR1
<DrwE_Base> + 64
H
25
Secondary colour register
DRWCOLOR2
<DrwE_Base> + 68
H
26
Pattern register
DRWPATTERN
<DrwE_Base> + 74
H
29
Limiter registers:
Limiter 1 start value
DRWL1START
<DrwE_Base> + 10
H
4
Limiter 2 start value
DRWL2START
<DrwE_Base> + 14
H
5
Limiter 3 start value
DRWL3START
<DrwE_Base> + 18
H
6
Limiter 4 start value
DRWL4START
<DrwE_Base> + 1C
H
7
Limiter 5 start value
DRWL5START
<DrwE_Base> + 20
H
8
Limiter 6 start value
DRWL6START
<DrwE_Base> + 24
H
9
Limiter 1 x-axis increment
DRWL1XADD
<DrwE_Base> + 28
H
10
Limiter 2 x-axis increment
DRWL2XADD
<DrwE_Base> + 2C
H
11
Limiter 3 x-axis increment
DRWL3XADD
<DrwE_Base> + 30
H
12
Limiter 4 x-axis increment
DRWL4XADD
<DrwE_Base> + 34
H
13
Limiter 5 x-axis increment
DRWL5XADD
<DrwE_Base> + 38
H
14
Limiter 6 x-axis increment
DRWL6XADD
<DrwE_Base> + 3C
H
15
Limiter 1 y-axis increment
DRWL1YADD
<DrwE_Base> + 40
H
16
Limiter 2 y-axis increment
DRWL2YADD
<DrwE_Base> + 44
H
17
Limiter 3 y-axis increment
DRWL3YADD
<DrwE_Base> + 48
H
18
Limiter 4 y-axis increment
DRWL4YADD
<DrwE_Base> + 4C
H
19
Drawing Engine
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