Adaptec AHA-1540 User Manual - Page 6

Defined, AHA-1540

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Section Three Installation 3.3.2 AT Interrupt Channel There are two jumper blocks involved in selecting the AT interrupt channel. These are J1 and J8. The AT interrupt channel jumpers consist of pin pairs 9, 10, and 11 in the large block of jumper pin pairs located in the upper right hand corner of the PCB. Pin pair 1 is the left most pair of pins. The interrupt channel reported to the AT during the Return Configuration Command is set by these jumpers according to the following table. The default is interrupt channel 11. AT Interrupt Channel Pin Pair Interrupt 9 10 11 Channel X X X Not Defined - X X Not Defined X - X 15 - - X 14 X X - 12 - X - 11 X - - 10 - - - 9 x = Jumper Installed J1 9 10 11 0 0 0 0 0 0 0 0 0 X 0 0 0 0 0 0 0 0 0 0 X 0 pin pair 1 Jumper set J8 selects the AT interrupt channel to be used by the AHA-1540. This jumper set is located just above the small AT bus connector. Pin pair 1 is the right most pair of pins. The interrupt channel used is set according to the following table. The default interrupt channel is 11. AT Interrupt Channel Pin Pair Interrupt 654 3 21 Channel 9 10 11 12 14 15 X = Jumper Installed J8 3 0 0 0 X 0 0 0 0 0 X 0 0 I-Pin Pair 1 AHA-1540 3 - 5 adaptec

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Section
Three
Installation
3.3.2
AT
Interrupt
Channel
There
are
two
jumper
blocks
involved
in
selecting
the
AT
interrupt
channel.
These
are
J1
and
J8.
The
AT
interrupt
channel
jumpers
consist
of
pin
pairs
9,
10,
and
11
in
the
large
block
of
jumper
pin
pairs
located
in
the
upper
right
hand
corner
of
the
PCB.
Pin
pair
1
is
the
left
most
pair
of
pins.
The
interrupt
channel
reported
to
the
AT
during
the
Return
Configuration
Command
is
set
by
these
jumpers
according
to
the
following
table.
The
default
is
interrupt
channel
11.
AT
Interrupt
Channel
Pin
9
Pair
10
11
Interrupt
Channel
X
-
X
-
X
-
X
-
X
X
-
-
X
X
-
-
X
X
X
X
-
-
-
-
Not
Defined
Not
Defined
15
14
12
11
10
9
x
=
Jumper
Installed
J1
0 0 0 0 0 0 0
0
0
X
0
0
0
0 0
0 0 0 0
0
X
0
9
1
0
1 1
pin
pair
1
Jumper
set
J8
selects
the
AT
interrupt
channel
to
be
used
by
the
AHA-1540.
This
jumper
set
is
located
just
above
the
small
AT
bus
connector.
Pin
pair
1
is
the
right
most
pair
of
pins.
The
interrupt
channel
used
is
set
according
to
the
following
table.
The
default
interrupt
channel
is
11.
AT
Interrupt
Channel
Pin
Pair
Interrupt
6
5
4
3
2
1
Channel
9
10
11
12
14
15
X
=
Jumper
Installed
J8
3
0
0
0
X
0
0
0
0
0
X
0
0
I
—Pin
Pair
1
AHA-1540
3
-
5
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