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User’s Manual U11969EJ3V0UM00
CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION
5.4.3 Exception status flag (EP)
The EP flag in PSW is a status flag used to indicate that trap processing is in progress. It is set when a trap occurs.
Bit Position
Bit Name
Function
6
EP
Exception Pending
Indicates that trap processing is in progress
0: Trap processing not in progress
1: Trap processing in progress
31
0
PSW
After reset
00000020H
7
NP
6
EP
5
ID
4
SAT
3
CY
2
OV
1
S Z
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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