Renesas M16C FAMILY - Manual (Page 71)

5 Using the KD
5) RAM monitor
When using RAM monitor, a User Program execution is stopped temporarily.
6) Register reference
When using register reference, a User Program execution is stopped temporarily
and the data of CPU register and SFR is transferred.
7) User Program stop
A User Program stops, a monitor program operates and it waits for next command.
5.5.3 The difference from an actual CPU operation
1) Real time
When opening a RAM monitor window, a User Program execution is stopped
temporarily, RAM is read out and the communication is performed. Since a User
Program is stopped, User Program execution time is prolonged.
2) Reset vector table
A reset vector is rewritten at the routine address which is used for a monitor program,
therefore when referring this area by dump, the value is differenet from the value
which a user sets.
3) Interrupt
Interrupts of Address Match interrupt and Single Step interrupt and BRK instruction
interrupt and DBC interrupt are used by a monitor program, therefore do not use
these interrupts in a User Program.
4) Values after reset
When a microcomputer is reset, a monitor program is operated, therefore when a
program is stopped at the head of a User Program, the CPU register and the SFR
value may differ from the initial value (value after reset) of a microcomputer.
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