Vector Table Area - Fujitsu FR Family Instruction Manual

CHAPTER 2 MEMORY ARCHITECTURE
2.1.2

Vector Table Area

An area of 1 Kbyte beginning with the address shown in the table base register (TBR) is
used to store "EIT" vector addresses.
■ Overview of Vector Table Areas
An area of 1 Kbytes beginning with the address shown in the table base register (TBR) is used to store
"EIT" vector addresses. Data written to this area includes entry addresses for exception processing,
interrupt processing and trap processing.
The table base register (TBR) can be rewritten to allocate this area to any desired location within word
alignment limitations.
Figure 2.1-3 Relation between Table Base Register (TBR) and Vector Table Addresses
0000 0000
TBR
1Kbyte
FFFF FFFF
8
Memory space
H
Vector
table
area
H
Offset
Number
from TBR
FF 000
Entry address for INT instruction
H H
FE 004
Entry address for INT instruction
H H
FD 008
Entry address for INT instruction
H H
FC 00C
Entry address for INT instruction
H H
00 3FC
Entry address for reset processing
H H
EIT source