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HARDWARE CONFIGURATION
2-23
INTERRUPT
CONTROLLER
Description of Registers
The detail of each register is described below.
•
Interrupt level register (ILRX: Interrupt Level Register X)
Address: 007C
H
Address: 007D
H
Address: 007E
H
Address: 007C
H
Address: 007D
H
Address: 007E
H
Initial value
11111111
B
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
L31
L30
L21
L20
L11
L10
L01
L00
L71
L70
L61
L60
L51
L50
L41
L40
LB1
LB0
LA1
LA0
L91
L90
L81
L80
(W)
(W)
(W)
(W)
(W)
(W)
(W)
(W)
ILR1
ILR2
ILR3
The ILRX sets the interrupt level of each resource. The digits in the center of
each bit correspond to the interrupt numbers.
IR0
IR1
IR2
IR3
IRB
#0
#1
#2
#3
#11
Interrupt control module
MB89140 hardware manual
Interrupt
number
Table address
Upper
Lower
FFFA
FFF8
FFF6
FFF4
FFE4
FFFB
FFF9
FFF7
FFF5
FFE5
Interrupt requests
from resources
L3X
[Example]
When an interrupt is requested from a resource, the interrupt controller
transfers the interrupt level based on the value set at the 2-bits of the ILRX
corresponding to the interrupt to the CPU. The relationship between the 2
bits of the ILRX and the required interrupt levels is as follows:
0
×
1
1
0
2
1
1
3 (None)
Lx1
Lx0
Required interrupt level
Summary of Contents for F2MC-8L Series
Page 121: ...INSTRUCTIONS 4 7 4 5 F2MC 8L FAMILY INSTRUCTION MAP ...
Page 123: ...5 MASK OPTIONS ...
Page 125: ...APPENDIX ...