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Chapter 17
Interrupt/Exception Processing Function
User’s Manual U16702EE3V2UD00
17.4.3 Exception status flag (EP)
The EP flag is bit 6 of the PSW, and is a status flag used to indicate that exception processing is in
progress. It is set when an exception occurs.
Figure 17-26:
Exception Status Flag (EP) Format
After reset: 00000021H
31
8
7
6
5
4
3
2
1
0
PSW
0
NP
EP
ID
SAT CY
OV
S
Z
EP
Exception processing status
0
Exception processing not in progress.
1
Exception processing in progress.
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