Freescale Semiconductor, Inc.
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Bit 7
Bit 15
0
6
14
0
5
13
0
4
12
0
3
11
0
2
10
0
1
9
0
Bit 0
Bit 8
0
RESET:
BRKAH — Breakpoint Address Register, High Byte
$0022
These bits are used to compare against the most significant byte of the
address bus.
Bit 7
Bit 7
0
6
6
0
5
5
0
4
4
0
3
3
0
2
2
0
1
1
0
Bit 0
Bit 0
0
RESET:
BRKAL — Breakpoint Address Register, Low Byte
$0023
These bits are used to compare against the least significant byte of the
address bus. These bits may be excluded from being used in the match
if BK0ALE = 0.
Bit 7
Bit 15
0
6
14
0
5
13
0
4
12
0
3
11
0
2
10
0
1
9
0
Bit 0
Bit 8
0
RESET:
BRKDH — Breakpoint Data Register, High Byte
$0024
These bits are compared to the most significant byte of the data bus or
the most significant byte of the address bus in dual address modes.
BKEN[1:0], BKDBE, and BKMBH control how this byte will be used in the
breakpoint comparison.
Technical Data
MC68HC912DG128 — Rev 3.0
Development Support
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