Adaptec 1542B User Manual - Page 13

controller

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Section Two Preparation and Configuration 2.3.3.4 Board BIOS Base Address Select The starting address of the address space reserved for the on-board BIOS is selected by pin pairs 7 and 8 on J7. Pin 1 J7 0 0 X X 0 0 0 0 0 0 0 0 0 0 0 0 BIOS Address Select bit 0 BIOS Address Select bit 1 BIOS BIOS SEL 0 SEL 1 x - x x x ADDRESS DC000* CC000 D8000 C8000 x = Jumper Installed - No Jumper Installed * = Default 2.3.3.5 Jumper Block J8 (AHA-1542B only) Jumper Block J8 is located at the lower center of the board above J9. It is used to configure the on-board floppy disk controller and is not present in the 1540B. Dual Channel Speed a:. .t(8c0uIs: cm co oa cm Y co Y (13 - ocL Pt IL 0 uCCj 0 0 a 0 a O° cc cc x x Ox Ox 00 J8 x x 0 x 0 x 00 1 -. . x =Jumper Installed n_ AI-IA-15408/1542B 2-12 adaptec

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Section
Two
Preparation
and
Configuration
2.3.3.4
Board
BIOS
Base
Address
Select
The
starting
address
of
the
address
space
reserved
for
the
on
-board
BIOS
is
selected
by
pin
pairs
7
and
8
on
J7.
Pin
1
J7
BIOS
BIOS
SEL
0
SEL
1
ADDRESS
0
0
X
X
DC000*
0
0
x
CC000
0
0
x
D8000
0
0
x
x
C8000
0
0
0 0
x
=
Jumper
Installed
BIOS
Address
Select
bit
0
—
No
Jumper
Installed
0 0
BIOS
Address
Select
bit
1
*
=
Default
2.3.3.5
Jumper
Block
J8
(AHA-1542B
only)
Jumper
Block
J8
is
located
at
the
lower
center
of
the
board
above
J9.
It
is
used
to
configure
the
on
-board
fl
oppy
disk
controller
and
is
not
present
in
the
1540B.
a:.
.0
(Is
c
cm
co
cm
co
tu
8:
oa
Y Y
(13
—
o
cL
Pt
CC
uj
a
a
O°
IL
0
0 0 0
cc cc
Dual
Channel
Speed
J8
x
x
Ox Ox 00
x x
0
x
0
x
00
1
-.
.
x
=Jumper
Installed
n_
AI
-IA
-15408/1542B
2-12
adaptec