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G.2.8.1
Branch Right Segment Compression #1
For the , a 15-bit bypass is used to indicate that the AA bit of a branch instruction should
be inserted with a value of zero. The decompression process is performed as shown in
Figure G-4.
15-bit Compressed
Bypass Field
Decompressed
Right Segment
Figure G-4. Branch Right Segment Compression #1
This bypass is coded by a value of "13" in the TP2LEN field of the DCCR register.
G.2.8.2
Branch Right Segment Compression #2
Also created for branch instructions on the , a bypass of 10 bits indicates that the AA bit
should be inserted with a value of zero and that the 5-bit word offset should be extended to
10 bits. The decompression process is performed as shown in Figure G-5.
:
10-bit Compressed Bypass Field
Decompressed
Right Segment
Figure G-5. Branch Right Segment Compression #2
This bypass is coded by a value of "12" in the TP2LEN field of the DCCR register.
G.2.8.3
Right Segment Zero Length Compression Bypass
This bypass type indicates that no bypass data exists in the compressed instruction. The
bypassed segment is16 zero bits.
This bypass is coded by a value of "11" in the TP2LEN field of the DCCR register.
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
0
16
16
w
o r
d
o
f
Appendix G. MPC534 Compression Features
Class-Based Compression Model Main Principles
4 5
0
1
21
22
25
26
f
s
e
t
13 14
29 30
31
0
LK
8
9
29 30
31
IP
0
LK
G-9
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