Debug in Depth
B-42 Copyright © 2001, 2004 ARM Limited. All rights reserved. ARM DDI 0210C
B.12 The watchpoint registers
The two watchpoint units, known as Watchpoint 0 and Watchpoint 1, each contain three
pairs of registers:
• address value and address mask
• data value and data mask
• control value and control mask.
Each register is independently programmable and has a unique address. The function
and mapping of the registers is shown in Table B-5.
Table B-5 Function and mapping of EmbeddedICE-RT registers
Address Width Function
00000 6 Debug control
00001 5 Debug status
00010 1 Abort status
00100 6 Debug comms control register
00101 32 Debug comms data register
01000 32 Watchpoint 0 address value
01001 32 Watchpoint 0 address mask
01010 32 Watchpoint 0 data value
01011 32 Watchpoint 0 data mask
01100 9 Watchpoint 0 control value
01101 8 Watchpoint 0 control mask
10000 32 Watchpoint 1 address value
10001 32 Watchpoint 1 address mask
10010 32 Watchpoint 1 data value
10011 32 Watchpoint 1 data mask
10100 9 Watchpoint 1 control value
10101 8 Watchpoint 1 control mask
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