HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 207

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

I3–I0: Status register interrupt mask bits.
Note: The vector number is only read from an external source when an external vector number is
interrupt level to I3–I0
Read vector number*
Branch to exception
Program execution
Save SR to stack
Save PC to stack
Read exception
Copy accepted
service routine
generated?
vector table
Interrupt
specified for the IRL/IRQ interrupt vector number.
NMI?
state
Yes
Yes
User break?
No
No
Yes
Figure 5.8 Interrupt Sequence Flowchart
interrupt?
No
H-UDI
Yes
Yes
interrupt?
level 14?
I3 to I0
Level 15
No
Yes
No
Yes
No
interrupt?
level 13?
I3 to I0
Level 14
No
Yes
Yes
No
interrupt?
I3 to I0 =
Level 1
level 0?
Yes
No
No
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