Motorola MPC823e Reference Manual page 1079

Development Capabilities and Interface
EVENT NAME
G (Gmatch0 | Gmatch1 | Gmatch2 | Gmatch3)
H (Hmatch0 | Hmatch1 | Hmatch2 | Hmatch3)
(G & H) ((Gmatch0 & Hmatch0) | (Gmatch1 & Hmatch1) | (Gmatch2 & Hmatch2) | (Gmatch3 & Hmatch3))
(G | H) ((Gmatch0 | Hmatch0) | (Gmatch1 | Hmatch1) | (Gmatch2 | Hmatch2) | (Gmatch3 | Hmatch3))
NOTE: & denotes a logical AND, but | denotes a logical OR.
The four load/store data events, combined with the match events of the load/store address
comparators and the instruction watchpoints, are used to generate the load/store
watchpoints and breakpoint according to your programming.
Table 20-6. Load/Store Watchpoints Programming Options
NAME DESCRIPTION
LW0 First Load/Store
Watchpoint
LW1 Second Load/
Store
Watchpoint
When programming the load/store watchpoints to ignore L-address and L-data events, the
instruction must be a load/store instruction to trigger the load/store watchpoint event.
20.3.2.3 COUNTER SUPPORT. There are two 16-bit down counters that count one of the
instruction watchpoints or one of the load/store watchpoints. Both generate the
corresponding breakpoint when they reach zero. When working in masked mode, the
counters do not count detected watchpoints when MSR
predictable if they are counting watchpoints programmed on the instructions that alter the
counters. Readings from the active counters must be synchronized by inserting a sync
instruction before a read is performed. For details, refer to Section 20.3.1.2 Byte And Half-
Word Working Modes.
20-18
Table 20-5. Load/Store Data Events
EVENT FUNCTION
I-ADDRESS EVENT L-ADDRESS EVENT
PROGRAMMING PROGRAMMING
OPTIONS
IW0, IW1, IW2, IW3,
Ignore I-address events
Comparators (E & F)
Comparators (E | F)
Ignore L-address events
IW0, IW1, IW2, IW3,
Ignore I-address events
Comparators (E & F)
Comparators (E | F)
Ignore L-address events
MPC823e REFERENCE MANUAL
L-DATA EVENT
PROGRAMMING
OPTIONS
Comparator E Comparator G
Comparator F Comparator H
Comparators (G & H)
Comparators (G | H)
Ignore L-data Events
Comparator E Comparator G
Comparator F Comparator H
Comparators (G & H)
Comparators (G | H)
Ignore L-data Events
=0. Counter values are not
RI
OPTIONS
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