Interrupt Mask Levels; Interrupt Mask Bits After An Interrupt Is Accepted - Hitachi H8/500 Series Hardware Manual

Table 3-1 Interrupt Mask Levels
Mask
Priority Level
High 7
6
5
4
3
2
1
Low 0
Table 3-2 Interrupt Mask Bits after an Interrupt is Accepted
Level of Interrupt Accepted
NMI (8)
7
6
5
4
3
2
1
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Mask Bits
I2 I1 I0 Interrupts Accepted
1 1 1 NMI
1 1 0 Level 7 and NMI
1 0 1 Levels 6 to 7 and NMI
1 0 0 Levels 5 to 7 and NMI
0 1 1 Levels 4 to 7 and NMI
0 1 0 Levels 3 to 7 and NMI
0 0 1 Levels 2 to 7 and NMI
0 0 0 Levels 1 to 7 and NMI
I2
1
1
1
1
1
0
0
0
I1 I0
1 1
1 1
1 0
0 1
0 0
1 1
1 0
0 1
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