MC9S12T64 Datasheet, PDF (554/608 Pages) Motorola, Inc – Specification

Breakpoint (BKP)
Freescale Semiconductor, Inc.
BKTAG — Breakpoint on Tag
This bit controls whether the breakpoint will cause a break on the next
instruction boundary (force) or on a match that will be an executable
opcode (tagged). Non-executed opcodes cannot cause a tagged
breakpoint
1 = On match, break if the match is an instruction that will be
executed (tagged).
0 = On match, break at the next instruction boundary (force).
Breakpoint Control
Register 1
(BKPCT1)
This register is used to control the breakpoint logic that resides within the
Core.
Read and write: anytime.
Address Offset
Read:
Write:
Reset:
$0029
Bit 7
BK0MBH
0
6
BK0MBL
0
5
BK1MBH
0
4
BK1MBL
0
3
BK0RWE
0
2
BK0RW
0
1
BK1RWE
0
Bit 0
BK1RW
0
BK0MBH:BK0MBL — Breakpoint Mask High Byte and Low Byte for First
Address
In Dual Address or Full Breakpoint Mode, these bits may be used to
mask (disable) the comparison of the high and low bytes of the first
address breakpoint. The functionality is as given in Table 102 below.
Table 102 Breakpoint Mask Bits for First Address
BK0MBH:BK0MBL
x:0
0:1
1:1
1. If page is selected.
Address Compare
Full Address Compare
256 byte Address Range
16K byte Address Range
BKP0X
Yes⁽¹⁾
Yes⁽¹⁾
Yes⁽¹⁾
BKP0H
Yes
Yes
No
BKP0L
Yes
No
No
MC9S12T64Revision 1.1.1
Breakpoint (BKP)
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