Motorola MPC533 Reference Manual page 1053

G.3.3.1 I-Bus Support Control Register (ICTRL)
MSB 1 2 3
0
Field CTA
Reset
16 17 18 19
Field IWP2 IWP3
Reset
Addr
Figure 0-1. I-Bus Support Control Register (ICTRL)
1
Changing the instruction show cycle programming starts to take effect only from the second instruction after the
actual mtspr to ICTRL.
Bits Mnemonic
0:2 CTA Compare type of comparator A
3:5 CTB Compare type of comparator B
6:8 CTC Compare type of comparator C
9:11 CTD Compare type of comparator D
12:13 IWP0 I-bus 1st watchpoint
programming
14:15 W1 I-bus 2nd watchpoint
programming
16:17 IWP2 I-bus 3rd watchpoint
programming
18:19 IWP3 I-bus 4th watchpoint
programming
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
4 5 6
CTB
0000_0000_0000_0000
20 21 22
SIWP0 SIWP1 SIWP2
EN EN EN
0000_0000_0000_0000
Table 0-1. ICTRL Bit Descriptions
Description
Appendix G. MPC534 Compression Features
7 8 9
CTC
23 24 25
SIWP3 DIWP0 DIWP1 DIWP2
EN EN EN
SPR 158
Non-compressed mode
0xx = not active (reset value)
100 = equal
101 = less than
110 = greater than
111 = not equal
0x = not active (reset value)
10 = match from comparator A
11 = match from comparators (A&B)
0x = not active (reset value)
10 = match from comparator B
11 = match from comparators (A | B)
0x = not active (reset value)
10 = match from comparator C
11 = match from comparators (C&D)
0x = not active (reset value)
10 = match from comparator D
11 = match from comparators (C | D)
0x = not active (reset value)
10 = match from comparator D
11 = match from comparators (C | D)
Operation Modes
10 11 12 13
CTD IWP0
26 27 28 29
DIWP3 IFM ISCT_SER
EN EN
Function
Compressed Mode
1xx = not active
000 = equal (reset value)
001 = less than
010 = greater than
011 = not equal
14 15
IWP1
30 LSB
31
1
1
G-21