Adaptec 1542B User Manual - Page 8

AHA-1540B/1542B.

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Section Two Preparation and Configuration 2.3.1.6 AT Interrupt Channel There are two jumper blocks involved in selecting the AT interrupt channel. These are J5 and J9. The AT interrupt channel jumpers consist of pin pairs 9, 10, and 11 in the large block of jumper pin pairs J5. 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. Jumper set J9 selects the AT interrupt channel to be used by the AHA-1540B/1542B. This jumper set is located near the bottom center of the host adapter. Pin pair 1 is the leftmost pair of pins. The interrupt channel used is set according to the following table. The default interrupt channel is 11. Interrupt Channel Select bit 0 Interrupt Channel Select bit 1 Interrupt Channel Select bit 2 J5 INTERRUPT CHANNELS PIN-PAIR 9 10 11 00 0 x0 0 0x 0 xx 0 00 x x0 x INTERRUPT CHANNEL 9 10 11* 12 14 15 0 0 0 0 0 0 0 0 0 x 0 0 0 J5 0 0 0 0 0 0 0 0 0 x 0 0 0 rn cs, a- al as a a0 tr. b: x = Jumper Installed * = Default AHA-1540B/1542B 2-7 adaptec

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Section
Two
Preparation
and
Configuration
2.3.1.6
AT
Interrupt
Channel
There
are
two
jumper
blocks
involved
in
selecting
the
AT
interrupt
channel.
These
are
J5
and
J9.
The
AT
interrupt
channel
jumpers
consist
of
pin
pairs
9,
10,
and
11
in
the
large
block
of
jumper
pin
pairs
J5.
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.
Jumper
set
J9
selects
the
AT
interrupt
channel
to
be
used
by
the
AHA-1540B/1542B.
This
jumper
set
is
located
near
the
bottom
center
of
the
host
adapter.
Pin
pair
1
is
the
leftmost
pair
of
pins.
The
interrupt
channel
used
is
set
according
to
the
following
table.
The
default
interrupt
channel
is
11.
J5
INTERRUPT
CHANNELS
Interrupt
Channel
Select
bit
0
Interrupt
Channel
Select
bit
1
Interrupt
Channel
Select
bit
2
PIN
-PAIR
9
10
11
INTERRUPT
CHANNEL
0
0
0
9
x
0
0
10
0
x
0
11*
x
x
0
12
0
0
x
14
x
0
x
15
0
0 0 0 0 0
0
0
0
x
0 0 0
J5
0
0
0 0
0 0 0
0
0
x
0
0
0
a-
rn
cs,
al
as
a a
tr.
b:
0
x
=
Jumper
Installed
*
=
Default
AHA-1540B/1542B
2-7
adaptec