beautypg.com

2 vector table area, Vector table area – FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E User Manual

Page 32

background image

8

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 Kbyte 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

H

FFFF FFFF

H

TBR

1 K

b

yte

N

u

m

b

er

Off

s

et

from TBR

EIT

s

o

u

rce

FF

H

FE

H

FD

H

FC

H

00

H

000

H

004

H

00

8

H

00C

H

3

FC

H

Entry

a

ddre

ss

for INT in

s

tr

u

ction

Entry

a

ddre

ss

for INT in

s

tr

u

ction

Entry

a

ddre

ss

for INT in

s

tr

u

ction

Entry

a

ddre

ss

for INT in

s

tr

u

ction

Entry

a

ddre

ss

for re

s

et proce

ss

ing

Memory

s

p

a

ce

Vector
t

ab

le

a

re

a