Filter
Top Products
60
CHAPTER 2 CPU
2.8.6 EIT Vector Table
The 1-kilobyte area beginning from the address, indicated by the table base register
(TBR), is the EIT vector area.
■
EIT Vector Table
The area size per vector is 4 bytes. The relationship between a vector number and vector
address is represented as follows:
The two low-order bits of the result of addition are always treated as 00.
The area ranging from 000FFC00
H
to 000FFFFF
H
is the initial area of the vector table after it is
reset.
vctadr = TBR + vctofs
=TBR + (3FC
H
- 4 x vct)
v c t a d r : v e c t o r a d d r e s s
vctofs: vector offset
v c t : v e c t o r n u m b e r