Commodore Amiga Hardware Reference Manual page 24

The Copper can store data into the following registers:
o Any register whose address is
$20
or above.
1
o Any register whose address is between
$10
and
$20
if the Copper danger bit is a
1. The Copper danger bit is in the Copper's control register, COPCON, which
is described in the "Control Register" section.
o The Copper cannot write into any register whose address
is
lower than
$10.
Appendix B contains all the machine register addresses.
The following example MOVE instructions point bit-plane pointer 1 at
$21000
and bit-
plane pointer
2
at
$25000.
2
DC.W
DC.W
DC.W
DC.W
. . $00EO,$0002
$00E2,$1000
$00E4,$0002
$00E6,$5000
jMove $0002 to address $OEO (BPL1PTH)
jMove $1000 to address $OE2 (BPL1PTL)
jMove $0002 to address $OE4 (BPL2PTH)
jMove $5000 to address $OE6 (BPL2PTL)
1
Hexadecimal numbers are distinguished from decimal numbers by the $ prefix.
2
All sample code segments are in assembler language.
10.
Coprocessor Hardware