SCSIMODE User's Guide
Document Number 1.0
May 2, 1995
Contents
Getting Started . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . 1
Requirements . . . . . . . . . . . . . . . . . . . . 1
The SCSIMODE Package . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . 2
Hardware Installation . . . . . . . . . . . . . . . 2
ASPI Manager Installation . . . . . . . . . . . . . 3
Working With IBM Storage Systems Division Hard Drives
. . . . . . . . . . . . . . . . . . . . . . . . . . 3
Using SCSIMODE . . . . . . . . . . . . . . . . . . . . . 4
Starting SCSIMODE . . . . . . . . . . . . . . . . . . 4
Using The Interface . . . . . . . . . . . . . . . . . 4
Main Screen . . . . . . . . . . . . . . . . . . . . . 5
Start/Stop Unit . . . . . . . . . . . . . . . . . . . 6
Request Sense . . . . . . . . . . . . . . . . . . . . 7
Inquiry . . . . . . . . . . . . . . . . . . . . . . . 7
Test Unit Ready . . . . . . . . . . . . . . . . . . . 7
Read Capacity . . . . . . . . . . . . . . . . . . . . 8
Mode Sense/Select . . . . . . . . . . . . . . . . . . 9
Diagnostics . . . . . . . . . . . . . . . . . . . . . 10
Tables
1. Various keys and their actions. . . . . . . . . . . 5
2. Main Menu Options . . . . . . . . . . . . . . . . . 6
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Getting Started
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Introduction
The SCSI architecture allows a variety of devices to coexist
on a SCSI bus, linked to the host computer with an adapter.
The Adaptec SCSI card provides a standard hardware interface
which supports major types of SCSI peripherals.
The Advanced SCSI Programming Interface (ASPI) provides a
protocol for SCSI device drivers and programs to submit I/O
requests to host computer systems. The ASPI manages host
adapter resources and provides the hardware independent ASPI
for SCSI application and device drivers. Installation of
different adapters to the system differs between operating
systems.
SCSIMODE is a hardware/software interface that allows the
user in the field to change SCSI mode parameters and perform
basic SCSI functions on the IBM SCSI disk drives. The
following drives are supported:
0661 (Lightning/Turbo)
0663 (Corsair I/Corsair II)
0663E (Corsair II Enhanced)
0664 (Allicat S10/Allicat S20)
0662 (Spitfire)
DFHS/DFMS (Starfire)
SCSI drives other than the ones listed above can also be
used. They will be recognized by the program as "Generic"
drives. The mode parameters on generic drives may not
correspond to the supported drives.
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Requirements
IBM PC/XT/AT/PS2 compatible computer with at least 640K
RAM.
A SCSI controller with ASPI support or an IBM SCSI
Adapter.
The disk drive that needs to be updated.
Getting Started 1
Controlled 5/12 volt power supply. If the hard drive
is installed in the PC, the PC power supply can be
used.
SCSIMODE Package
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The SCSIMODE Package
The SCSIMODE package has all the necessary files on it for
updating the microcode and dumping error logs on the drive.
A brief description of these files is given.
SCSIMODE.EXE The executable form of the SCSIMODE program.
SCSIMODE.OPT Contains user specified parameters.
SCSIMODE.HLP Contains SCSIMODE help text.
SCSIMODE.TXT This documentation.
SMLEGAL.TXT Legal documentation and disclaimer.
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Installation
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Hardware Installation
This section contains information pertaining to the
installation of an Adaptec 1542B SCSI controller card.
Refer to the documentation provided with the SCSI controller
you are using for installation instructions and further
details.
The Adaptec card should be correctly configured and
installed in the computer slot per the instructions given in
the Adaptec card user's manual.
Note: The Adaptec 1542B card requires special EPROMS to
function properly with IBM drives. The correct
microcode for the EPROMS can be obtained from the
Adaptec BBS ((408)945-7727) or from your local
Adaptec representative.
2 SCSIMODE User's Guide
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ASPI Manager Installation
The ASPI (Advanced SCSI Programming Interface) Manager must
be installed before using SCSIMODE. Most SCSI card
manufacturers, including Adaptec, Bus Logic support an ASPI
Manager. Refer to the documentation that came with your
card to confirm that the ASPI manager is installed
correctly.
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Working With IBM Storage Systems Division Hard Drives
IBM drives should only be handled in an ESD safe environment
and connected to the Adaptec card in the following manner
1. Turn the power supply off.
2. Plug the SCSI cable from the Adaptec card into the
50-pin or 68-pin SCSI connector on the hard drive.
3. Plug the power cable into the 4-pin power connector
on the hard drive.
4. Turn the power supply on.
Using Code Update 3
Using SCSIMODE
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Starting SCSIMODE
Insert the diskette containing the SCSIMODE program into the
floppy drive and make that drive the current drive. Execute
SCSIMODE.EXE.
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Using The Interface
SCSIMODE provides the user with a consistent, easy-to-use
interface. The user first provides SCSIMODE information
about the operation to perform and then requests that
SCSIMODE perform that operation through the use of the
function keys. In this way, SCSIMODE avoids unexpectedly
performing an action without the user's permission.
The user describes the parameters of an operation through
the use of three types of display elements
Menus
Numeric and Text Entry Fields
Toggle Items
Menus are boxes which display two or more items from which
the user can choose. The highlighted item indicates the
currently selected item. The cursor keys change the selected
item.
Numeric and text entry fields allow the user to enter
numbers and text, respectively. In these fields, the user
can use the cursor keys to change the cursor position or the
insert key to toggle the insert mode. Pressing the
backspace and delete keys remove characters. Holding the
control and the pressing the backspace key deletes the
entire entry. Hexadecimal values can be entered into a
numeric entry field by preceding the number with"0x."
Toggle items are single words or phrases which are usually
YES/NO or 1/0 questions. These items can be changed by
pressing the space bar on them.
At any given time there is only one screen item accepting
input. This active item is highlighted to distinguish it
from the inactive items. Pressing the tab and shift-tab
keys changes the active item. It is also possible to move
between fields using the cursor keys, but not as convenient
as the tab keys. For example, moving between entry fields
can only be done using the up and down cursor keys since the
4 SCSIMODE User's Guide
left and right cursor keys only reposition the cursor in the
field.
The valid operations are listed across the bottom of the
screen. The F2 key causes an operation to be performed and
the F3 key exits the current screen.
Table 1. Various keys and their actions.
Key Action
Tab Move cursor forwards through different
fields
Shift + Tab Move cursor backwards through different
fields.
Function Keys Choose particular action or menu option.
The action keys are specified at the
bottom of each screen.
Cursor Keys Move highlighted bar through options.
Move between fields.
Enter Accept the highlighted option.
Ctrl + Backspace Erase a field.
0x Enter a hex value in a field which
accepts a number.
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Main Screen
The main screen displays the types of drives SCSIMODE has
sensed are attached to the SCSI bus. An entry of "NO
CONNECTION" indicates the program did not detect a drive
connected to the bus at the corresponding target address.
An entry of "GENERIC" means a drive was detected, but the
type of drive could not be determined. SCSIMODE seldom
rescans the SCSI bus. After removing or attaching drives to
the SCSI bus, it is important to tell SCSIMODE to rescan the
SCSI bus. This can be done from the main screen by pressing
the F4 key.
The main screen contains a menu of operations Code Update
can perform. These operations can be selected by entering
the appropriate menu number and pressing the enter key.
Pressing tab to highlight the menu, pressing the cursor keys
to select an operation, and then pressing the enter key has
the same effect. Table 2 shows the main menu options.
Using Code Update 5
Table 2. Main Menu Options
# Option Explanation
1 Start/Stop Unit Start/Stop the motor driver on the
disk drive.
2 Request Sense SCSI Request Sense command.
3 Inquiry SCSI Inquiry command.
4 Test Unit Ready SCSI Test Unit Ready command.
5 Read Capacity SCSI Read Capacity command.
6 Mode Sense/Select SCSI Mode Sense/Select command.
7 Diagnostic SCSI Send/Receive Diagnostics
commands.
Pressing F3 ends the SCSIMODE program . Pressing F4 tells
SCSIMODE to rescan the SCSI bus. Pressing F10 causes the
system to go to a DOS shell from which DOS commands can be
entered. Entering Exit from the DOS shell will return
control of the system back to SCSIMODE.
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Start/Stop Unit
Code Update can perform a SCSI Start/Stop Unit command. The
options are as follows:
Target ID SCSI ID of the drive.
Start A "YES" in this field indicates that the motor of
the selected target is to be started. A "NO" in
this field indicates that the motor of the
selected target is to be stopped.
Immediate When this field is set to "YES", the drive returns
a good status to the system immediately. When
this field is set to "NO", the drive waits until
the operation has completed.
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Request Sense
Code Update can perform a SCSI request sense command. The
options are as follows
Target ID SCSI ID of the drive.
Length The number of sense bytes to return. IBM 066x
family drives define only the first 32 bytes, but
lengths from 0 to 255 bytes are valid.
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Inquiry
Code Update can perform a SCSI inquiry command. The options
are as follows:
Target ID SCSI ID of the drive.
EVPD "Enable Vital Product Data". Setting this field to
"YES" indicates that the "Page Code" field is to be
used. Setting this field to "NO" indicates that the
"Page Code" field will not be used.
Page selects the page to return.
Length indicates the number of bytes to return.
Using Code Update 7
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Test Unit Ready
Code Update can perform a SCSI test unit ready command.
This command only requires a SCSI target ID.
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Read Capacity
Code Update can perform a SCSI read capacity command. This
command returns the block size and total number of blocks a
drive is currently formatted to. The options are as follows:
Target ID SCSI ID of the drive.
PMI "Partial Medium Indicator" This field when set to
"OFF" indicates that the capacity of the entire drive
is to be returned. When this field is set to "ON", the
last LBA on the cylinder the LBA in the "LBA" field
indicates.
LBA is the LBA to be used when the "PMI" bit is set "ON"
8 SCSIMODE User's Guide
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Mode Sense/Select
Code Update integrates the mode sense and mode select SCSI
commands to provide a quick means of examining the mode
pages' settings and modifying them. To use the "Mode
Sense/Select" operations, first choose the "Mode
Sense/Select" operation from the main menu and press Enter.
Next select the appropriate page by keying in the
appropriate hex digit (use the "/" character for the header)
or by pressing tab and then using the cursor keys to select
the menu item. At this point, two prompts will be displayed:
Target ID SCSI ID of the drive.
Current Values/ Default Values / Saved Values
This option refers to which of the mode parameters
are to be reported. "Current Values" indicates
that the mode parameters the drive is presently
using should be reported. "Default Values"
indicates that the default values are to be
reported. Selecting "Saved Values" means that the
mode parameters saved and used when the drive is
first started will be reported.
Pressing F2 will sense the values for the selected target
and page. Refer to the product SCSI specification for
details about the specific page parameters. At this point
modifiable parameters can be changed or the page can be
sensed again by pressing F2.
After a page has been sensed, it is now possible to select
the page by pressing F4. Code Update will ask if the
parameters are to be saved or are only to be used as the
current values. Pressing F2 selects the page and F3 aborts
the select operation.
Using Code Update 9
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Diagnostics
Code Update can perform a SCSI send diagnostic command. The
options are as follows:
Target ID SCSI ID of the drive.
Self Test Setting this field to "YES" causes the drive
to perform a series of self-tests. Setting
this field to "NO" causes the drive to
perform a translation as indicated by
additional options.
Translate from selects whether a LBA is translated to its
corresponding physical address or vice versa.
(This option only appears if Self Test is set
to "NO.")
If Self Test is "NO," entry fields for the physical or
logical address appear, depending on what is to be
translated.
Note: The translate function of send diagnostic is not
supported by Lightning, Turbo, and Corsair drives.
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