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Con't
4.0 Con't
A reserved jumper (W2 pins 7·8)
is
for internal
a. Place a copy of IBM DOS 2.0 or later into
use only and must be installed for the controller
floppy drive
A:
and apply power to the system
to operate properly.
in the normal sequence.
W>2:
3·4
5·6
BIOS ADDRESS
b. After booting DOS successfully from the
ON
ON
C800:0000
floppy drive, execute the following command
ON
OFF
CAOO:OOOO
upon receiving the "A>" prompt:
OFF
ON
0800:0000
OFF
OFF
F400:0000
debug
]
2.2 Software Readable Jumper (W3)
(If your DOS came on two diskettes, the DEBUG
This jumper is used to manually set the
.
Winchester drive type. The factory settmg
IS
for W3 to be installed for ST225 drive types.
By removing W3, a screen menu for drive
definition (Sea Section 4.1) will be selected.
2.3 AT LED Connector (15)
If the controller is used in AT·type systems,
this connector is provided for the proper
operation of the drive activity LED indicator.
3.0 Cable Requirements
a. The following ribbon cables are required for
these configurations.
1. One internal drive:
One 20·conductor cable
One 34·conductor cable
2. Two internal drives:
Two 20·conductor cables
One 34·conductor twisted or flat daisy'
chain cable
b. This 34 pin cable connects to )1
on the
5150X, (Note: When using a twisted cable,
both drives must be set to drive select 2.)
c. The 20 pin cable connects to )2 andlor )3.
The drive logical unit number is determined
by a setting on the disk drive, not by the
choice of cable connector )2 or )3
(See Figure
for location of cable connectors)
4.0 Formatting The Disk
:rak"nirg! The Data Technology Corporation hard
is
ormatting utility will erase all data on
the hard disk!
It
should only be run once, the
first time you install your hard disk.
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program may be on the second diskette). Debug
will respnd with a
,<...',
prompt.
C. Respond to the "-" prompt with the command:
g=c800:5
d. This will initiate the hard disk format
utility and the following message will
appear:
*
Format Utility
*
Drive no (1-2): (Enter the drive number
that you want to format.)
Interleave (2·9): (Enter the interleave
factor desired. For
optimal system performance
an interleave of 3 is
recommended).
e. With jumper W3 installed, the follOWing
information is displayed:
*
Cyl: 615
*
Heads: 4
*
Precomp: 256
*
Reduced write current: 615
*
Step rate: 10 micro sec
1
Enter drive defect table? (V
IN)
J
Is above all correct? (V
IN)
Ready to ERASE entire disk? (V
IN)
f.
If jumper W3 is not installed, a drive table
(See Section 5.1) will appear on the screen.
After you have selected the correct drive
type by the table number, the system will
display the drive configuration that has been
selected. Answer the following questions
that will appear below the drive
configuration.
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