Hitachi AP1 - Page 272

HD614P080S------------------------------
1000.0
lIE r-------------1-----
Sequence Control
. Push PCtCA/ST
1003.0
·Re .. t Ilf
. Jump 10 Vector
Address
Priority PLA
Fig. 6 Interrupt Circuit Block Diagram
Table
1. Vector Addresses and Interrupt Priority
Reset. Interrupt
Priority
Vector
addresses
RESET
-
$0000
INlo
1
$0002
INTI
2
$0004
TIMER-A 3
$0006
TIMER-B 4
$0008
SERIAL
5
$OOOC
Table 2. Conditions of Interrupt Service
Vector
Addr.ss
~
Interrupt source
INTo INTI
TIMER-A
TIMER-B
control bits
I/E
1 1 1
1
IFO·IMO
1
0
0
0
IF1 ·IM1
•
1 0
0
IFTA
·IMTA
• •
1
0
IFTB
·IMTB
•
•
•
1
IFS ·IMS
•
•
•
•
270
SERIAL
1
0
0
0
0
1
• Don't care