Using Address, Data, And Status Qualifiers - HP 64700 Series User Manual

U sing Address,
1
Data, and Status
Qualifiers
Note
Notice, in the preceding display, that only two accesses of address
5C2H occur before the trigger. Because the occurrence count is
still five, two accesses of 5C3H must have also occurred before the
trigger. The trace command above causes the analyzer to trigger
on the fifth occurrence of either address 5C2H or 5C3H.
So far, the examples have not used address, data, and status
qualifiers in combination. When an address qualifier is specified,
additional data and status specifications serve to further qualify a
state.
For example, specifying a trigger on variable RAND_SEED
(address 600H in the sample program) will cause the analyzer to
trigger on the first access of 600H, regardless of the value being
read or written to this address.
However, suppose you wish to trigger on the read of a specific
value from 600H, say 0XX5AH (where "X"s are "don't cares"). To
trigger on the occurrence of this state, you can include data and
status qualifiers along with the address qualifier.
Suppose also that you want to go back to storing addresses in the
range 500H through 5FFH, but that you only want to store the
writes of bytes whose first hex digit is "5". To do this, enter:
trace about RAND_SEED data 0xx5ah status
read
only range RESULTS thru RESULTS+0ffh data
0xx5xh <RETURN>
Status qualifiers will differ from one emulator to another. For
more information on the status qualifiers refer to your Emulator
Softkey Interface User's Guide.
Getting Started 2-21