HP 9000 200 Series User manual

Using the BASIC 5.0/5.1 System
HP 9000 Series 200/300 Computers
HP Part Number 98613-90000
FliOW HEWLETT
.:~ PACKARD
Hewlett-Packard Company
3404 East Harmony Road, Fort Collins, Colorado 80525

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The information contained in this document is subject to change without notice.
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Copyright © Hewlett-Packard Company 1987
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Copyright © AT&T, Inc. 1980, 1984
Copyright © The Regents of the University of California 1979. 1980. 1983
This software and documentation is based in part on the Fourth Ber1<eIey Software Distribution under license from the Regents of the University
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ii

Printing History
New editions of this manual will incorporate all material updated since the previous
edition. Update packages may be issued between editions and contain replacement and
additional pages to be merged into the manuai by the user. Each updated page will be
indicated by a revision date at the bottom of the page. A vertical bar in the margin
indicates the changes on each page. Note that pages which are rearranged due to changes
on a previous page are not considered revised.
The manual printing date and part number indicate its current edition. The printing
date changes when a new edition is printed. (Minor corrections and updates which are
incorporated at reprint do not cause the date to change.) The manual part number
changes when extensive technical changes are incorporated.
November 1987...Edition 1
Printing History iii

iv Printing History

Table of Contents
Introduction to Using the BASIC System
Chapter
1: Loading BASIC into Memory
Turn on Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-2
Is BASIC Loaded
and Ready for Use? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-4
What to Do Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-5
Order of Devices Searched by the Boot ROM ............................. 1-6
Chapter
2: Introduction to the System
Notations in this
Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-1
Using the Key board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-3
What Can You Do at the Keyboard? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-4
Performing Calculations
at the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-4
Typing
and Executing Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-5
Using Typing-Aid Softkeys
............................................. 2-6
Softkey
Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-7
What State Is the System In? ......................................... 2-10
Is a Program Running? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-10
Is There a BASIC Program in Memory? ............... .' ............ 2-13
Clearing
the Program ............................................ 2-14
Determining
Current System Devices and Binaries ................... 2-15
Re-Defining Typing-Aid Softkeys
....................................... 2-17
Examples of Re-Defining Typing-Aid Softkeys
....................... 2-17
Softkey Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 2-19
Memory Available for Typing-Aid Definitions
........................ 2-20
Listing the Current Typing-Aid Definitions .......................... 2-21
File for Typing-Aid Softkeys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 2-21
Restoring Power-Up Typing-Aid
Definitions. . . . . . . . . . . . . . . . . . . . . . . .. 2-22
Defining Typing-Aid Softkeys Programmatically
..................... 2-22
Clearing
the Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-23
What to Do Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-24
Chapter
3: Mass Storage Concepts
Overview of Mass Storage Organization (or "What Are Files and Volumes?"). 3-1
A File Is Named Collection of Data ................................. 3-2
Volumes Are Collections of Files
.................................... 3-3
Examples of Mass Storage Volumes
................................. 3-3
Table of Contents v

How to Specify Volumes ............................................... 3-5
Checking a Disc's Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-9
Hierarchical Directories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-10
What Is a Hierarchy? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-10
Uses of the Hierarchy: An Example ................................ 3-11
Referring
to Directories and Files in the Hierarchy ................... 3-12
Choosing a Directory Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-13
Criteria for Choosing a Directory Format ........................... 3-14
What Is Initialization? ................................................ 3-16
Disc Sectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-18
Sector/Volume Size Option ........................................ 3-18
Disc Interleave ....................................................... 3-19
What to Do Next .................................................... 3-20
Chapter 4: Loading and Running Programs
A Brief Look at Loading and Running Programs .......................... 4-1
A Closer Look at Loading Programs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-4
Using LOAD ..................................................... 4-4
Using GET ....................................................... 4-5
A Closer Look at Running Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-7
Prerun .......................................................... 4-7
Normal Program Execution ........................................ 4-8
Live Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-9
Example of Controlling Program Execution .......................... 4-9
What to Do Next .................................................... 4-14
Chapter 5: Using Directories and Files
Finding
and Specifying Files ........................................... 5-1
Is the File on the Default Volume? .................................. 5-1
Directory, File, and Volume Specifiers ............................... 5-3
Changing the Default Volume and Current Working Directory .......... 5-6
Creating and Using Hierarchical Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5- 7
Example Hierarchy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 5-7
Changing the Default Volume ...................................... 5-7
Adding Another Directory ......................................... 5-8
A Closer Look at Hierarchical Directory Capabilities ................. 5-11
How SRM and HFS Directories and Files Are Stored . . . . . . . . . . . . . . . .. 5-12
A Closer Look at File Catalogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-13
General File Management Operations ................................... 5-21
Closed vs. Open Files and Hierarchical Directories. . . . . . . . . . . . . . . . . .. 5-21
Protecting Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-21
Copying Files and Volumes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-32
vi Tahlf' of Contf'nts

Renaming Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-34
Purging Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-35
Volume Labels (LIF and HFS Volumes Only) . . . . . . . . . . . . . . . . . . . . . . .. 5-39
Enabling Checkread Verification ................................... 5-40
What to Do Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-41
Chapter 6: Editing and Storing Programs
Entering and Storing Programs (Overview) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-1
Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-1
Getting into EDIT Mode .......................................... 6-3
Correcting Typing Mistakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-4
Storing the Line .................................................. 6-4
Entering Program Lines ........................................... 6-4
Upper-case or Lower-case Letters? .................................. 6-6
Keys Used for Editing the Current Line .............................. 6-7
Keys Used for Scrolling the Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-9
Inserting Lines .................................................. 6-10
Deleting and Recalling Lines ...................................... 6-11
Copying Lines (By Changing Line Numbers) ........................ 6-12
Getting Out of EDIT Mode ....................................... 6-12
Listing the Program .............................................. 6-13
Storing the Program ............................................. 6-13
Running the Program ............................................ 6-13
A Closer Look at Editing ............................................. 6-14
More Details about Getting into EDIT Mode. . . . . . . . . . . . . . . . . . . . . . .. 6-14
Typing-Aid Softkey Menu Changes (ITF Keyboards Only) ............ 6-15
A Closer Look at Listing a Program ................................ 6-16
Global Editing Operations ........................................ 6-18
Indenting a Program ............................................. 6-19
Finding Textual Patterns ......................................... 6-22
Search-and-Replace Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-24
Copying Program Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-25
Moving Program Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-25
Deleting Multiple Lines ........................................... 6-26
Making Programs Readable ................................... . . . . . . .. 6-27
Contrast Between Documented and Undocumented Programs ......... 6-28
General Recommendations for Commenting Programs . . . . . . . . . . . . . . .. 6-30
Software Security .................................................... 6-31
Preventing Programs from Being Listed. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-31
Other Security Measures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-32
Table of Contents vii

A Closer Look at Storing Programs .................................... 6-33
Using STORE ................................................... 6-34
Using SAVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-34
What to Do Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-36
Chapter 7: ITF Keyboards
BASIC ITF Keyboard Overlays ..................................... 7-2
Character Entry Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7-2
Cursor-Control Keys .............................................. 7-5
Numeric Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7-6
Editing Keys ..................................................... 7-7
Program Control Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7-9
System Control Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7-10
Softkeys
and Softkey Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7-12
Chapter 8: HP 98203B/C Keyboards
Character Entry Keys ............................................. 8-2
Numeric
Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8-4
Cursor-Control Keys .............................................. 8-5
Editing Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 8-6
System Control Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8-9
Softkeys ........................................................ 8-11
Program Control Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8-12
Chapter 9: HP 98203A Keyboards
Charader Entry Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9- 2
Cursor-Control Keys .............................................. 9-4
Editing Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-5
System Control Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-8
Softkeys ........................................................ 9-10
Index
viii Table of
Contents

Introduction to Using the BASIC System
This manual contains information about using the BASIC system that you may use
frequently. If you need information about installing BASIC onto a hard disc, configuring
or customizing your system, maintaining BASIC (making back-ups, etc.), you should
reference the Installing and Maintaining the BASIC System.
Here is what you will find in this manual:
Chapter
"Loading BASIC into Memory"
"Introduction to the System"
"Mass Storage Concepts"
"Loading
and Running Programs"
"Using Files and Directories"
"Editing and Storing Programs"
"Keyboard" chapters
Description
a chapter that describes loading an installed BASIC
system
a chapter that shows you the keyboard operations
used in BASIC, and how to read the display during
a BASIC session
a
chapter that describes detailed concepts related to
mass storage (storing files, etc., on discs)
shows you how
to load programs from a disc, and run
them
a chapter that explains how you specify files in BA-
SIC, and how to use an HFS (Hierarchical File Sys-
tern)
directory structure
when you need to write programs, go to this chapter
for information on the BASIC editor
for detailed information about common keyboards
and their use with BASIC.

Tasks/Topics
If you have not installed BASIC...
Load BASIC from back-up discs or from
hard disc...
TT - ,.
If loading fails...
What to do next, ..
Order of devices searched by the Boot ROM...
Where to Go
For Details
Installing and Maintaining
the BASIC System
1-1
1-5
1-,5
1-6

Loading BASIC into Memory 1
This chapter is not for installing BASIC. You should have already installed BASIC in
Installing and Maintaining the BASIC System. If you have not done so, go to that
manuai now.
If your System Administrator (the person who installed your system and possibly
configured it) has an alternate loading procedure, use
that procedure instead of the
following default! loading procedure.
A detailed description of how
to choose a system to load is included in this chapter. If
you need more information, see the appropriate section in Installing and Maintaining the
BASIC System (the one you used when installing).
Table 1-1. Loading BASIC
If You Have
This Configuration ...
Only flexible disc drives
One or more hard disc drives
(and you do not have an HP-UX
system currently running)
One or more hard disc drives and
an HP- UX system is cur-
rently running
Do These Steps ...
1. Make sure computer and
disc drives are turned off
2. Turn on one flexible disc drive
3. Insert back-up copy of System DISC ONE
4. Turn on computer (be sure monitor is on)
1. Make sure computer is turned off
2. Hold down spacebar and turn computer on
3. Choose a system (for example, SYSTEM_BA5)
by typing characters to left of the
system entry on the screen; e.g., lB
1. Do not turn off the computer or disc:
See the System Administrator who
will shutdown the system.
2. Only after the system has been shutdown,
reboot the system (reboot) and hold
down
the spacebar
3. Choose a system (such as SYSTEM_BA5)
by typing characters to left of
the system entry (e.g., lB)
See
Page ...
1-5
1-2
1-2
1 A default procedure is one that is standard or assumed by the system if not changed by a user.
Loading BASIC into Memory 1-1

Turn on Computer
(and Hold Down Spacebar if
You Have Other Systems On-Line)
If there are no other on-line systems, you need not hold down the space bar (the boot
ROM searches for your system and loads the default system automatically).
After pressing the computer's power switch on (or rebooting), press the space bar on the
keyboard
and hold it down.
Figure 1-1. Turn Computer On and Hold Down the Space Bar
Holding down thE' sparE' bar doE's two things:
• Tells the computer to wait until you are ready to load a system (instead of
automatically loading
the first one it finds) .
• Allows you to watch the computer's display as it:
• performs its self-test (checks mf'lllory, ptr.)
• searches for interfaces (such as HP-IB, RS-232C. etc.),
and on-line systems (operating systems stored on discs, tapes, and ROM
cards). For a list of the order in which the devices are search, see the last
section in this chapter,
"Order of Devices Searched by the Boot ROM."
1-2 Loading BASIC into Memory

If You See Nothing on the Monitor Screen
Here are some possible explanations if there is nothing on the monitor screen:
• The monitor's brightness is not turned all the way up.
• The monitor is not plugged in.
• The computer is not plugged in.
If You Still Have Problems
If you have verified that the above problems do not exist, but you are still not getting a
display, see your computer's Installation Reference for troubleshooting advice.
Choosing a System
Type the number and letter to the left of the "SYSTEM_BA5" entry. For example in the
figure below, you would type OJ 00; the lower right shows the characters you type.
Volume Specifier
;HP9153. 702. 0 t 0'
Pascal ---.-lP SYSTEM_P32
Copyright 1985.
Hewlett-Packard Company.
All Rights Reserved.
:HP9153 REMV. 702. 1. 0
BASIC
~@ SYSTEM_BA5
High Resolution CRT ~ Display Type
MC68010 Processor ~ CPU Type
Keyboard I( Keyboard Type
::-~:620B I
HP 98626 at 9 ~nterface~ currently
HP 98625 at 14 Installed In computer
HP 98629 at 21
1048402 Bytes I( Memory before booting
Figure 1-2. Choosing a System
lB
Loading BASIC into Memory 1-3

The lower-left corner of the display will show the following message to indicate that it is
loading
the specified system:
BOOTING A SYSTEM
RESET To Power-up
See the end of this chapter for "Order of Devices Searched by the Boot ROM". If you
loaded BASIC from a hard disc, you have finished. See "What to Do Next."
Is BASIC Loaded and Ready for Use?
If you are loaning BASIC from a back-up copy of the System flexible discs, you will
switch discs
until the AUTOST program displays this message:
The BASIC system is now ready for use.
BASIC has been successfully loaded. You are ready to use BASIC; see "What to do
Next" for more information.
If you are booting a STOREd SYSTEM from a hard disc or SRM, you will see the
message:
BASIC Main 5.1
To verify you have all the binaries loaded, run:
LIST BIN I Return I
If you loaded from a customized AUTOST program, see your System Administrator for
details.
1-4 Loading BASIC into 11emory

If Loading Fails
If the computer did not load the BASIC system, then you should check for the following
potential problems.
Problem
Solution
The Boot ROM does not Make sure that the disc drive is plugged in and turned on.
find
the BASIC system Make sure
that the drive is connected to the HP-IB interface
of
the computer.
Make sure
the back-up System disc is properly inserted in
the drive.
NOT ENOUGH MEMORY
Your computer does not have sufficient memory, Qr mem-
is displayed ory board(s) have been improperly installed. Refer
to the
Peripheral Installation Guide for instructions on how to con-
figure
and install memory cards.
What to Do Next?
N ow that BASIC is loaded, you may begin using BASIC. The following table shows some
chapters for more information on BASIC.
Topic
Chapter.
Learn about some BASIC fundamentals "Introduction to the System"
Learn about mass storage devices "Mass Storage Concepts"
How to run BASIC programs "Loading
and Running Programs"
How to manage files "Using Files
and Directories"
How to edit programs "Editing and Storing Programs"
Loading BASIC into Memory 1-5

Order of Devices Searched by the Boot ROM
The following table lists the order in which the Boot ROM searches mass storage devices
for
system files.
Type of Mass
Priority
Storage Device
Comments
1 Internal disc drive Select code
4; unit number 0 (right drive)
(9826
and 9836 only)
2
External disc drives Select codes 7 through 31; primary address 0;
unit number 0; volume number 0
3
Shared Resource Manager
Select code 21; node number 0;
(SRM) volume
number 8; /SYSTEMS directory
4
Bubble memory card
Select code 30 (Bubble memory is organized as files and
(HP 98259)
treated the same as other mass storage devices.)
5
EPROM card
Unit 0 (EPROM is also organized and treated like other
(HP 98255)
mass storage devices: if a system is found in EPROM,
then it is first transferred to computer memory and
executed from there-the CPU does not
execute
the
system directly from EPROM)
6
ROM-based operating sys-
Execute directly from ROM and do not
have to be
terns
loaded into computer memory
7
Internal disc drive Select
code 4; unit number 1 (left drive)
(HP QR?R ~nn HP QR~R
,--- ---- ---- --- ----
only)
8
Remaining external disc Select codes 7
through 31; addresses 0 through 7;
drives
unit numbers 0 through 7; volume numbers 0 through 7
9
Remaining SRM systems
Select codes 8 through 31
10
Remaining bubble memory
Select codes 0 through 31. except 30
cards
11
Remaining EPROM units
Units 1 through last one found
1-6 Loading BASIC into ~lemory

Where to Go
Tasks /Topics
For Details
Notations in this Manual
2-1
Using the Keyboard
2-3
What Can You Do at the Keyboard?
2-4
Performing Calculations at the Keyboard
2-4
Typing and Executing Commands
2-5
Using Typing-Aid Softkeys
2-6
Softkey Labels
2-7
What State is the System in?
2-10
Is a Program Running?
2-10
Is There a BASIC Program in Memory?
2-13
Clearing the Program
2-14
Determining Current System Devices and Binaries
2-14
Re-Defining Typing-Aid Softkeys
2-17
Softkey Labels
2-19
Memory Available' for Typing-Aid Definitions
2-20
Listing the Current Typing-Aid Definitions
2-21
File for Typing-Aid Softkeys
2-21
Restoring Power-Up Typing-Aid Definitions
2-22
Defining Typing-Aid Softkeys Programmatically
2-22
Clearing the Computer
2-23
What to Do Next
2-24

Introduction to the System 2
This chapter introduces you to using the keyboard and display of HP Series 200/300
computers. Topics include how to type in and execute commands, use typing-aid softkeys,
determine how much memory
is available, and determine which device is the system
printer.
Notations in this Manual
The following table describes some of the notations (conventions) used in this manual.
If You See ...
COMPUTER FONT
italic font
Caps Lock On
Caps Lock Off
Caps
(blank)
It Means ...
this is either what you see as the system's response to your
commands, or this is exactly what you should type in an example
when you see examples with italics in them, you have to replace
the italic words with your own (i.e., if the italic word is file_name,
then you supply a real file name in place of file_ name)
if you see a word in a box, it refers to an actual key on your
keyboard; for example, look on your keyboard for IBreak I (upper
left on the ITF keyboard)
when a key is prefaced
with IShift ~, it means you press the IShift I
key, hold it down and press the next key (like shifting case)
if you see
this in the System Message/Results line, it means you
will
type upper-case letters
if you see this in the System Message/Results line, it means you
will
type lower-case letters
(ITF keyboard only, at lower right of screen) means you will type
upper-case letters
(ITF keyboards only, at lower right of screen) means you will type
lower-case letters
Throughout this manual, the key cap IReturn I will be used. IT you have a keyboard
other than the ITF keyboard (with a key like IEnter Iinstead of IReturn I), substitute the
appropriate key.
Introduction
to the System 2-1

The Significance of Letter-case
While typing commands, letter-case is usually not important. For instance, these two
commands are recognized as being equivalent by the system as the BEEP statement:
beep
BEEP
However, letter-case is significant when typing in things like literal text (enclosed in
"quotes"). Also, BASIC keywords can be all upper-case or all lower-case; however, when
letter-case
is mixed in a keyword, the system interprets it as a variable name. For
instance,
Beep would be interpreted as a variable name, not as a keyword. HE'rE' arE' some
examples
that are not equivalent:
Table 2-1. Example
Commands that Are NOT Equivalent
First Command
Second Command Reason not Equivalent
LOAD "MyFile"
LOAD "MYFILE" Literal string
systemS ("MSI") system$("
ms i") Literal string
BEEP
Beep
Can't mix letter-case in keywords
2-2 Introduction to the System

Using the Keyboard
There are three different types of keyboards available with Series 200 and Series 300
computers. Here are the options, along with the names by which we will refer to them
throughout
the BASIC manual set.
EJ~~D~~u~D~uD~D~~
~~~~~D~~u~DDD~~u
[;J EJ[]uO[]~EJEJDEJ[JEJ El~LJ
(;J ~[ [~ ~0~
Figure 2-1. ITF Keyboard (with BASIC Keyboard Overlay)
:' :::. ~. c~
~E3c::=:J
CUlSCtI SlI'" CUI .. SfOI'
~~
Figure 2-2. HP98203B/C Keyboards
Figure 2-3. HP 98203A Keyboard
Introduction to the System 2-3