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External
External signal 7
00000000 uuuuuuul
External signal 6
00000000 uuuuuulu
External signal 5
00000000 uuuuuluu
External signal 4
00000000 uuuuluuu
External signal 3
00000000 uuuluuuu
External signal 2
00000000 uuluuuuu
INTERRUPT pushbutton
00000000 uluuuuuu
Timer
uuuouuoo
lUUUUUUU
I/O
Multiplexor channel
00000000
aaaaaaaa
Selector chaµnel 1
00000001
aaaaaaaa
Selector channel 2
00000010
aaaaaaaa
Selector channel 3
00000011
aaaaaaaa
Selector channel 4
00000100
aaaaaaaa
Selector channel 5
00000101
aaaaaaaa
Selector channel 6
00000110
aaaaaaaa
NOTES:
u: Unpredictable
r: Rl and R2 fields of Supervisor Call instruction
a: I/O device address
7
u
Completed
7
u
Completed
7
u
Completed
7
u
Completed
7
u
Completed
7
u
Completed
7
u
Completed
7
"
,...,, -
·~· ,~
1
~"-
- ..l
VVlll}-'Ltl.C::U
0
u
Completed
1
u
Completed
2
u
Completed
3
u
Completed
4
u
Completed
5
u
Completed
6
u
Completed
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