Hitachi AP1 Data Book page 350

HMCS404CL--------------------------------------------------------------------------
$ 000.0
liE
t - - - - - - - - - - - - - { - - - . . .
Sequence ContrOl
· Push
PCICA/ST
$00'.2
$ 003.0
· Reset Ilf
· Jump to Vector
Address
Priority Control
PLA
Fig.6 Interrupt Circuit Block Diagram
Table 1. Vector Addresses and Interrupt Priority
Reset, Interrupt
Priority
Vector addresses
RESET - $0000
INTo 1 $0002
INT,
2 $0004
TIMER-A 3
$0006
TIMER-B
4 $0008
SERIAL 5 $OOOC
Table 2. Conditions of Interrupt Service
~
Interrupt source
INTo
INT,
TIMER-A TlMER-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
* * * *
348
SERIAL
1
0
0
0
0
1
* Don't care