Hitachi SH7709S Hardware Manual page 171

0.5 × Icyc
+ 0.5 × Bcyc
+ 2 × Pcyc
IRL
Instruction (instruction
replaced by interrupt
exception handling)
Overrun fetch
First instruction of interrupt
handler
IF: Instruction fetch: Instruction is fetched from memory in which program is stored.
ID: Instruction decode: Fetched instruction is decoded.
EX: Instruction execution: Data operation and address calculation are performed.
Figure 6.4 Example of Pipeline Operations when IRL Interrupt is Accepted
152
Interrupt
acceptance
5 × Icyc
IF ID EX EX
IF
Start of interrupt
handling
EX EX
IF ID EX