Appendix B Vector Table - Fujitsu MB91260B Series Hardware Manual

APPENDIX B Vector Table

APPENDIX B Vector Table
Appendix Table B-1 shows an interrupt vector table. In this table, interrupt factors and
interrupt vector/interrupt control register allocations for MB91260B series are listed.
ICR: ICR is a register installed among the interruption controllers. ICR sets the interruption level to each
demand of the interruption. ICR is prepared for corresponding to each interruption demand.
TBR: TBR is a register that shows the first address of the vector table for EIT.
The address where TBR and the defined offset value of each EIT factor were added is a vector
address.
The area of 1 KB from an address that TBR shows is the vector area for EIT.
The size of one vector is four bytes. The relationship between the vector number and the vector address is
shown as follows.
vctadr
vctadr:
vctofs:
vct:
446
= TBR + vctofs
= TBR + (3FC – 4 × vct)
H
Vector address
Vector offset
Vector number