Tandy 2000 Service Manual page 79

Tandy@
Model
2000
Service
Manua1
ADDRESS READ/WNI'IE
FUNC'IION
0060H
Read
006
2H
Read
0060H
Write
0
06
2H
Write
0070H
Read
00
7
2H
Read
00
7
0H
Write
0072H
Write
Read
OCW2
and
OCW3
(
Controller
0
)
Read OCWI
(
Controller
0
)
Write ICWI
(
Controller
0
)
Write ICW2
ICW4
(
Controller
0
)
Read
OCW2
and
OCW3
(
Controller I
)
Read OCWI
(
Controller I
)
Write ICWI
(
Controller I
)
Write
ICW2
-
ICW4
(
Controller I
)
Figure 7-LL. Interrupt Controller Register
Assignments
70