FUJITSU MB91F109 FR30 - Manual (Page 253)

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8.3 Interrupt Control Register (ICR)
ICR4 is fixed to "1" and cannot be set to "0".
Table 8.3-1 Correspondences between the Interrupt Level Setting Bits and Interrupt
Levels
ICR4 ICR3 ICR2 ICR1 ICR0 Interrupt level
0 0 0 0 0 0
System reserved
0 1 1 1 0 14
0 1 1 1 1 15 NMI
1 0 0 0 0 16 Highest level that can be set
1 0 0 0 1 17
(High)
(Low)
1 0 0 1 0 18
1 0 0 1 1 19
1 0 1 0 0 20
1 0 1 0 1 21
1 0 1 1 0 22
1 0 1 1 1 23
1 1 0 0 0 24
1 1 0 0 1 25
1 1 0 1 0 26
1 1 0 1 1 27
1 1 1 0 0 28
1 1 1 0 1 29
1 1 1 1 0 30
1 1 1 1 1 31 Interrupt prohibited