Adaptec AHA-1540 User Manual - Page 7

H, 230H

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Section Three Installation 3.3.3 AT Port Address The starting address of the block of four I/O ports required by the AHA-1540 is selected by the jumpers in jumper block J9. This jumper set is located just above the left corner of the large AT bus connector. Pin pair 1 is the left most pair of pins. The default address is 0330H and must not be changed unless a new BIOS is supplied. The port address is coded in the BIOS and must match. Valid port addresses are 334H, 330H, 234H, 230H, 134H, and 130. The default address is 330H. LSB MSB Port Address Pin Pair 1 2 3 4 5 6 7 8 Port I/O Address Bit 004H 008H 010H 020H 040H 080H 100H 200H 3 4 7 8 XX00XXO 01 XX00XX00 -1- -1- LDefault Address 330H Pin Pair 1 X = Jumper Installed, Jumper Deasserts the Address Bit. Valid Addresses Are: 334, 330, 234, 230, 134, 130 AHA-1540 3 - 6 adaptec

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Section
Three
Installation
3.3.3
AT
Port
Address
The
starting
address
of
the
block
of
four
I/O
ports
required
by
the
AHA-1540
is
selected
by
the
jumpers
in
jumper
block
J9.
This
jumper
set
is
located
just
above
the
left
corner
of
the
large
AT
bus
connector.
Pin
pair
1
is
the
left
most
pair
of
pins.
The
default
address
is
0330H
and
must
not
be
changed
unless
a
new
BIOS
is
supplied.
The
port
address
is
coded
in
the
BIOS
and
must
match.
Valid
port
addresses
are
334H,
330H,
234H, 230H,
134H,
and
130.
The
default
address
is
330H.
LSB
MSB
Port
Address
Pin
Pair
Port
I/O
Address
Bit
1
2
3
4
5
6
7
8
004H
008H
010H
020H
040H
080H
100H
200H
3
4
7
8
XX00XXO
01
XX00XX00
—
1
—
—
1
—
Pin
Pair
1
X
=
Jumper
Installed,
Jumper
Deasserts
the
Address
Bit.
Valid
Addresses
Are:
334, 330,
234,
230,
134,
130
L
Default
Address
330H
AHA-1540
3
-
6
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