Adaptec 1542B User Manual - Page 12

Select

Get Adaptec 1542B - AHA Storage Controller Fast SCSI 10 MBps PDF manuals and user guides View all Adaptec 1542B manuals
Add to My Manuals
Save this manual to your list of manuals

Page 12 highlights

Section Two Preparation and Configuration J7 Pin pair 2 Pin pair 3 Pin pair 4 0 0 Port Address Select bit 0 X X Port Address Select bit 1 0 0 Port Address Select bit 2 0 0 0 0 0 0 0 0 0 0 x = Jumper Installed = Default AT PORT ADDRESS Bit 2 Bit 1 Bit 0 Select bit 1 A9 A8 A2 ADDRESS 4 3 2 Pin Pair 00 0 334H 00 x 330H' 0x 0 234H 0x x 230H x0 0 134H x0 x 130H x x 0 not used x x x not used Note that selection of an I/O Port address other than 330H requires that the on-board BIOS be disabled to work correctly, and a driver which can work with that address. The on-board BIOS cannot be used with a port address other than 330H. 2.3.3.3 Board BIOS Wait State Select Pin pairs 5 and 6 on J7 allow the signal IOCHRDY to be driven inactive on the bus during BIOS reads. The time may be set to a wait state value of 100, 200, or 300 nsec. Default is Wait State Disabled. Pin 1 J7 0 0 X X 0 0 0 0 0 0 0 0 0 0 0 0 Wait State bit 0 Wait State bit 1 WS 0 WS 1 - - x - - x x x DELAY (ns) 0 (IOCHRDY not driven)* 100 200 300 x = Jumper Installed - = Jumper Not Installed = Default AHA-1540B/1542B 2-11 adaptec

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
Section
Pin
pair
2
Pin
pair
3
Pin
pair
4
Two
J7
Preparation
Port
Address
Select
bit
0
Port
Address
Select
bit
1
Port
Address
Select
bit
2
and
Configuration
AT
PORT
ADDRESS
0
X
0
0
X
0
Bit
2
Bit
1
A9
A8
4
3
Bit
0
A2
2
Select
bit
1
ADDRESS
Pin
Pair
0
0
0
0
0
334H
0
0
0
0
x
330H'
0
0
0
x
0
234H
0 0
0
x
x
230H
x
0
0
134H
0
0
x
0
x
130H
x
=
Jumper
Installed
x
x
0
not
used
=
Default
x
x
x
not
used
Note
that
selection
of
an
I/O
Port
address
other
than
330H
requires
that
the
on
-board
BIOS
be
disabled
to
work
correctly,
and
a
driver
which
can
work
with
that
address.
The
on
-board
BIOS
cannot
be
used
with
a
port
address
other
than
330H.
2.3.3.3
Board
BIOS
Wait
State
Select
Pin
pairs
5
and
6
on
J7
allow
the
signal
IOCHRDY
to
be
driven
inactive
on
the
bus
during
BIOS
reads.
The
time
may
be
set
to
a
wait
state
value
of
100,
200,
or
300
nsec.
Default
is
Wait
State
Disabled.
Pin
1
J7
0
0
X
X
0 0
0 0
0 0
0 0
0
0
0
0
Wait
State
bit
0
Wait
State
bit
1
AHA-1540B/1542B
WS
0
WS
1
DELAY
(ns)
-
x
-
x
-
—
x
x
0
(IOCHRDY
not
driven)*
100
200
300
x
=
Jumper
Installed
—
=
Jumper
Not
Installed
=
Default
2-11
adaptec