HP 2624 User manual

2624A
Display Station
Fli-;' HEWLETT
~~ PACKARD

NOTICE
The information contained in this document is subject to change without notice.
HEWLETT-PACKARD MAKES
NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATER-
IAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.
Hewlett-Packard shall not be liable for errors
contained herein or for incidental or consequential damages in connection with the furnishing, perfor-
mance or use of this material.
Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is
not furnished by Hewlett-Packard.
This document contains
proprietary information which is protected by copyright. All rights are reserved.
No part of this document may be photocopied, reproduced or translated to another program language
without the prior written consent of Hewlett-Packard Company.
HEWLETT·PACKARD COMPANY
974 EAST ARQUES AVENUE
SUNNYVALE, CALIFORNIA, 94086
Copyright © 1980 by HEWLETT· PACKARD COMPANY
Printed in U.S.A. 10/80
(
(
c

Table of Contents
Section I Page Section III (Continued) Page
INTRODUCING THE HP 2624A Bell ............................................. 3-12
The Keyboard .................................... 1-1
Wait ............................................ 3-12
The Function Keys ................................ 1-2 Modem Disconnect
............................... 3-12
The Display Screen ................................ 1-3
Display Memory .................................. 1-4
Configuring the Terminal .......................... 1-5
The Integral Printer .............................. 1-5
Data Communications ............................. 1-6
Self-Test ......................................... 1-6
Section IV
DISPLAY CONTROL
Page
Introduction ...................................... 4-1
Cursor Control .................................... 4-1
Home
Up ...................................... 4-1
Section II
CONFIGURING THE TERMINAL
Introduction ...................................... 2-1
The Configuration Function Keys ................ 2-1
The Configuration Menus ....................... 2-1
The Terminal Configuration Menu ................. 2-1
Programmatic Configuration ...................... 2-9
Lock/Unlock Configuration Menus ............... 2-9
Terminal Configuration Menu ................... 2-9
Page
Home Down .................................... 4-1
Move
Cursor Up ................................ 4-2
Move Cursor Down ............................. 4-2
Move Cursor Right ............................. 4-2
Move Cursor Left ............................... 4-2
Roll Text Up ................................... 4-3
Roll Text Down ................................. 4-3
Next Page/Previous Page ....................... 4-3
Screen Relative Addressing ..................... 4-4
Absolute Addressing
............................ 4-4
Cursor Relative Addressing ..................... 4-4
Section III
KEYBOARD CONTROL
Page
Introduction ...................................... 3-1
Selecting Modes .................................. 3-1
Remote/Local Modes
............................ 3-1
Character/Block Modes ......................... 3-2
Format Mode .................................. 3-2
Line Modify Mode .............................. 3-2
Modify All Mode
............................... 3-3
Auto Line Feed Mode ........................... 3-3
Memory Lock Mode ............................. 3-3
Display Functions Mode ........................ 3-4
Caps Mode ..................................... 3-4
Combining Absolute and Relative Addressing ..... 4-5
Edit Operations ................................... 4-5
Insert Line ..................................... 4-5
Delete Line .................................... 4-5
Insert Character ............................... 4-5
Delete Character ............................... 4-6
Clear Display .................................. 4-7
Clear Line ..................................... 4-7
Setting and Clearing Margins ...................... 4-7
Setting and Clearing Tabs ......................... 4-8
Tab .............................................. 4-8
Back Tab ......................................... 4-8
Display Enhancements ............................ 4-8
Caps Lock Mode ................................ 3-4
User-Definable Keys .............................. 3-5
Defining Keys Locally .......................... 3-5 Section V
Page
Defining Keys Programmatically ................ 3-6 DESIGNING AND USING FORMS
Controlling the User Keys Menu
Drawing Forms ................................... 5-1
Programmatically ........................... 3-6
Defining Fields ................................... 5-4
Triggering the User Keys Programmatically ...... 3-6
Protected Data ................................. 5-4
Controlling the Function Key Labels
Unprotected Fields ............................. 5-4
Programmatically ........................... 3-7
Transmit-Only Fields ........................... 5-4
The ENTER Key .................................. 3-7
Field Attributes ................................ 5-4
Send Display «ESC)d) ......................... 3-10
Defining Fields From the Keyboard .............. 5-7
Enable/Disable Keyboard ......................... 3-11
Defining Fields Programmatically ............... 5-9
Soft Reset ....................................... 3-11
Transmit Modified Fields ....................... 5-9
Hard Reset ...................................... 3-11 Transferring Form Structures from the
Break ........................................... 3-12
Screen to a Host Computer ...................... 5-9
iii

Section VI
Page Section VIII Page
DEVICE CONTROL
Introduction ...................................... 6-1
Display to
Printer Data Transfers .................. 6-1
~~~~~~ion ...................................... 8-1 ~
Interpreting Status ............................... 8-1'
Copy Line ...................................... 6-1 Terminal ID
Status ............................... 8-1
Copy Page ..................................... 6-1 Terminal
Status .................................. 8-2
Copy All ....................................... 6-2
Primary Terminal Status .......................... 8-2
Copy All ofDisplay Memory ..................... 6-2 Secondary Terminal
Status ........................ 8-4
Copy Menu .................................... 6-2 Device
Status ..................................... 8-6
Skip Line ...................................... 6-2
Skip Page ...................................... 6-2
Device Control Completion Codes
................ 6-2
Computer to Terminal
Data Transfers .............. 6-3 Section IX Page
Selecting Printer Modes ........................... 6-4 ERROR MESSAGES AND SELF-TESTS
Expanded Characters ........................... 6-4 Introduction
...................................... 9-1
Compressed
Characters ......................... 6-4 Error Messages ................................... 9-1
Report
Format ................................. 6-5 Terminal Self-Tests ................................ 9-2
Metric
Format ................................. 6-5 Power-On Test ................................. 9-2
Data Logging .................................. 6-5 Terminal Test
.................................. 9-2
Printer Self-Test .................................. 6-6 User Data Comm Test .......................... 9-3
Printer Test .................................... 9-4
Manufacturing Test ............................ 9-4
Section VII
Page
Identify ROMs ................................. 9-5
DATA
COMMUNICATIONS
Introduction ...................................... 7-1
Selecting Equipment and Cables ................... 7-1
Hardwired Connections
......................... 7-2 Section X
Page
MODEM Connections ........................... 7-2 TERMINAL MAINTENANCE PROCEDURES
Installing a Point-to-Point Configuration ........... 7-4 Cleaning the Screen and Keyboard ................ 10-1
Port # 1 Cabling ................................ 7-4
Port #2 Cabling ................................ 7-6
Configuring
the Terminal ....................... 7-6
Battery Maintenance ............................. 10-1 (
Thermal Printer Paper ........................... 10-2
Paper Loading ................................ 10-2
Point-to-Point
Programming Information .......... 7-12
Character Mode ............................... 7-12
Multicharacter Transfers ...................... 7-12
Start and Stop Bits ............................ 7-13 Appendix A
Data Bits (Character Length) .................. 7-13
SUMMARY OF ESCAPE SEQUENCES
Parity Checking ............................... 7-13
Receive Buffer
................................ 7-13
Receive
Errors ................................ 7-14
Transmit State ................................ 7-14 Appendix B
Receive
State ................................. 7-14
KEYBOARDS AND CHARACTER SETS
Local/Remote Modes ........................... 7-14
Full Duplex Operation ......................... 7-14
Half Duplex Operation ......................... 7-14
Pacing Mechanisms ........................... 7-15 Index
IV

Illustrations
Title
Page
Title Page
HP 2624A Display Terminal ....................... 1-1
Character Sizes and Enhanc.ements as
HP 2624A Keyboard .............................. 1-2
Printed on the Integral Printer .................. 6-4
Function Keys and Screen Labels .................. 1-3 Report and Metric Formats ........................ 6-5
Mode Selection Key Labels
........................ 1-3 Integral Printer Self-Test Output ................... 6-6
HP 2624A Function Key Hierarchy ................. 1-3
Integral Printer Mechanism ....................... 6-7
User Keys Definition Menu ........................ 1-4 Point-to-Point Decision Tree
....................... 7-2
Default User Key Labels ........................... 1-4 HP 2624A Display Terminal, Rear View ............ 7-5
Sample User-Supplied User Key Labels ............. 1-4 Port #1 Cabling (HP 13222 Cables) ................. 7-5
Alphanumeric Character Generation ............... 1-4 Port # 1 Cabling (HP 13265A Modem or
'lYPical Configuration Menu ....................... 1-5
HP 13266A Current Loop Converter) ............. 7-6
Terminal Configuration Menu ..................... 2-1 Port #2 Cabling (HP 13242 Cables) ................. 7-7
Screen-Labeled Function Keys ..................... 3-1 Full Duplex Hardwired Configuration Menu ........ 7-7
User Keys Definition Menu ........................ 3-5 Full Duplex Modem Configuration Menu ........... 7-7
The "Roll" Data Functions ......................... 4-2 Half Duplex Main Channel Configuration Menu ..... 7-8
Previous Page and Next Page Concepts ............. 4-3
Half Duplex Reverse Channel Configuration Menu .. 7-8
Character Insert With Margins .................... 4-6 Primary Terminal Status Example ................. 8-2
Character Delete With Margins .................... 4-7 Secondary Terminal Status Example ............... 8-4
Line Drawing Set Elements ........................ 5-1 Device Status Example ............................ 8-6
Sample Data Entry Form .......................... 5-2 Screen Test
Pattern ............................... 9-3
Completed Data Entry Form ....................... 5-3 Integral Printer Self-Test Output ................... 9-4
Base Set Equivalents For
ROM Identification Listing ........................ 9-5
Sample Data Entry Form ....................... 5-3
Battery Location, Rear Panel ..................... 10-1
Use ofShift-In and Shift-Out Codes ................. 5-4 Removing
the Battery ............................ 10-2
Field Definition Menu ............................. 5-7 Printer Mechanism .............................. 10-3
FORMIO Source
Listing .......................... 5-10
Tables
Title
Page
Title
Page
Summary ofHP 2624A Configuration Menus ........ 2-1
Port #1 Data Communications Cables .............. 7-2
Terminal Configuration Menu Fields ............... 2-2 Port #2 Data Communications Cables .............. 7-3
Terminal Configuration Function Keys ............. 2-9 Modems
.......................................... 7-4
ENTER Key Operation ............................ 3-8 Point-to-Point Configuration Menu Fields
........... 7-8
Attributes by Field 'lYPe ........................... 5-5 Por t 1 and Port2 Conf igurat ion Function Keys ... 7-12
"define field!!" Function Keys .................... 5-8 ASCII
Status Characters .......................... 8-1
v

(I
(

Introducing the HP 2624A
I
'UI'",,,I
.\ I \
~----------------~--------------------------------------------------------~
The HP 2624A Display Terminal (figure 1-1) is a versatile
alphanumerics CRT terminal that offers the following
features:
• 'lWo Separate Data Communications Ports (one for the
host computer and one for an external printer)
• Full Duplex MODEM, Full Duplex Hardwired, Half
Duplex Main Channel, and Half Duplex Reverse Chan-
nel Point-to-Point Operation With Full Pacing Mech-
anisms
• Programmable Record Separator and Unit Separator
Codes.
• Optional Forms Copy Integral Printer (includes both
compressed and expanded print modes)
• Eight User-Definable Function Keys (with 16-character
user-supplied screen labels)
• User-Definable _ Key
• Extensive Forms DesignCapability(fielddefinition,dis-
play enhancements, line drawing set)
• Seven National Keyboards
• Line Drawing Character Set
• Optional Math Symbol and Large Character Sets
• Screen Labeled System
Function Keys (for selecting
modes
and performing other terminal controlfunctions)
• Menu-Driven Terminal Configuration (no physical
straps; all configurationperformed either programmati-
cally or through keyboard entries into formatted menus
displayed on the screen; configuration data maintained
in non-volatile memory)
• Full Editing Capabilities(insert/delete/clearline and in-
sert/ delete character)
• Display Enhancements (inverse video, blinking,
underlining, half bright, and non-displaying security
mode)
• Adjustable Margins and Tab Stops
•
Programmatic Cursor Sensing and Addressing
• Easy-to-Use Keyboard With Separate NumericKey Pad
• Character or Block Mode Operation
• Extensive Self-Test Capability
Figure 1-1. HP 2624A Display Terminal
THE KEYBOARD
The keyboard of the HP 2624A (figure 1-2) is logically
divided into five major groups of keys.
Alphanumeric Keys-The layoutofthese keys is similar
to that ofa standard typewriter keyboard. These keys are
usedfor entering alphabetic and numeric data, ASCII con-
trol codes, and the special symbolic and punctuation
characters such as ()? %& and • .
Numeric Pad-The numeric pad is located to the right of
the alphanumeric keys. The layout of this key pad is
similar to that of a standard office calculator. These keys
may be used for high-speed entry of large quantities of
numeric data.
Cursor Control Keys-This group of keys is used for
moving the cursor around on the screen (up, down, left, or
right) and for controlling what portion of display memory
appears on
the screen (home up, home down, roll up, roll
down,
next page, and previous page).
Edit Control Keys-These keys areusedfor inserting and
deleting characters and lines in relation to the current
cursor position.
Function Keys-These keys (labeled _ through m)
perform different functions depending upon which
keystrokes have been performed. At any given time, the
applicable labelsfor these keys appear across the bottomof
the display screen.
1-1

Introducing the HP 2624A
The United States (USASCII) keyboard is the standard
keyboard. As an option, you can order any of the following
international keyboards instead:
Swedish/Finnish (Option 001)
Danish/Norwegian (Option 002)
French (Option 003)
German (Option 004)
United Kingdom (Option 005)
Spanish (Option 006)
If you order any of the above keyboards, then your terminal
automatically includes the appropriate language char-
acter ROM. For the French and Spanish keyboards, you
select
the following options by way of the configuration
process:
French AZERTY layout with mute keys
French QWERTY layout with mute keys
French AZERTY layout without mute keys
French QWERTY layout without mute keys
Spanish with mute keys
Spanish without mute keys
THE FUNCTION KEYS
Across the top ofthe keyboard are eight keys labeled ..
through ... The functions performed by these keys
change dynamically as you use the terminal. At any given
time, the applicable function labels for these keys appear
across the bottom of the display screen (figure 1-3).
Whenyou press the. key the eight function keysbecome
mode selection keys (figure 1-4).
In this c;apacity you may
use them to enable and disable various terminal operating
modes (such as remote mode and display functions mode).
Each modeselection key alternately enables and disables a
particular mode. When the mode is enabled, an asterisk (
appears in the associated screen label. At power-on ..
through .. are automatically initialized as mode selec- .
tion keys.
When you press the .. key, the eight function keys
become general control keys that you use for configuring
the terminal, setting and clearing margins and tab stops,
enabling and disabling display enhancements, defining
data entry fields, and so forth. The entire set of system
function key labelsis illustrated in figure 1-5. Pressing ..
always reinitializes .. through .. to the top row of
functions (labels) shown in figure 1-5.
In using the system function keys, keep in mind the follow-
ing two conventions:
1. If a key label contains any lowercase letters, pressing it
will transfer you to another level of system function
keys.
2. If a key label contains onlyuppercase letters, pressing it
will perform the function suggested by the key label.
"LEFT MARGIN", for example, sets the left margin at the
current cursor position whereas "!!ervice key!!" transfers
you to the terminal self-test function keys.
Whenyou press
the .. and 8iJ keys simultaneously, the
user keys definition menu (figure 1-6) appears on the
screen. By filling in this menu you can define the screen (.
label and functional characteristics for eight user keys. In
the same manner, you can also redefine the functional
characteristics of the _ key. To enable the eight user
keys, press the 8iJ key. Figure 1-7 shows the default user
key screen labels and figure 1-8 shows some sample user-
supplied
user key screen labels.
(
Figure 1-2. HP 2624A Keyboard
1-2

Introducing the HP 2624A
Pressing the _ and II keys disables the function keys
and removes the key labels from the screen. To reenable
them press II, ., or 1lIJ.
THE DISPLAY SCREEN
The terminal's display screen consists of 26 lines (rows),
each containing 80 character positions(columns). Only the
upper 24rows are used fordisplaying data. The bottom two
rows
are used for displaying the function key labels and
certain control information (current cursor row and
column numbers, the characters" I C" when the insert char-
acter edit function is enabled, and so forth).
The terminal uses a raster scan deflection technique
similar to that used in television sets. With this technique,
the electron beam repeatedly traverses the screen in a
series
of closely spacedhorizontal lines, starting at the top
and working downward. Characters are formed from line
segments and dots produced by turning the beam intensity
on and off' at appropriate times.
Figure 1-3. Function Keys and Screen Labels All
of the character positions are fundamentally rec-
tangles 7 dots wide by 9 scan lines high. Four additional
scan lines beneath the 7X9 matrix are used for the de-
scender
areas oflowercase characters, for underlining, and
for the blinking underscore cursor. One other dot is used on
either sidefor character-to-characterspacing, and onescan
line is reserved at the top and bottom for row-to-row
spacing.
This results in a character cell of9 dots by 15 scan
lines replicatedover the entire screen area (see figure 1-9).
Figure 1-4. Mode Selection Key Labels
AIDS
----
1&l1li_-
{DEVICE
"_"11M
........
DEVICE CONTROL
FUNCTION
GROUP DEVICE _......
... IM .. _
MODES • I •
II I .-
MARGINS/
Ell ...... IIIIIIIIMIIIIII_
TABS/COL
SERVICE
.. _--
_lIB __
ENHANCE
...... 1IIfI IBlllIBiI
l1liII1II
VIDEO
DEFINE
_II1IIl1li ...
.. IiiJaIlllIll!Ml
ENHANCEMENTS FIELDS
GROUP MODIFY
CHAR SET
I11III_--
1IIII1III_1IIiiiI
DEFINE ........
----
EDITS
CONFIG
---- ----
KEYS
CONFIGURATION DATACOMM
Ell ""1!iIIII
Ii!lillllllllIBiI"
GROUP CONFIG
TERMINAL
Ell ""1!iIIII
IIiIIi Bill BHiI_
CONFIG
Figure 1-5. HP 2624A Function Key Hierarchy
1-3

Introducing the HP 2624A
fO t'-l
f~E TURt~
f1
Ii
LRBEL
I
f2
Ii
LRBEL
I
n Ii
LRBEL
I
f4
Ii
LRBEL
I
fS
Ii
LRBEL
i
fS
Ii
LRBEL
I·
f7
Ii
LRBEL
,
Hi
Ii
LRBEL
.:
Figure 1-6. User Keys Definition Menu
----
----
Figure 1-7. Default User Key Labels
----
Figure 1-8. Sample User-Supplied User Key Labels
II ill ill
I
I
I
7 x 9 Upper
{ Case MatriX
....
r-.
...
'£
(a)
Two types of character sets can be stored within the ter-
minal:
alphanumeric sets and microvector sets. The al-
phanumeric sets support the primary use of the terminal:
displaying textual and numeric information. Characters
are designed around a basic 7X9 dot matrix with provision
for lowercase descenders. The
characters are embellished
byuse of
the half-shift. With this type ofset, the character-
to-character spacing of two dots is hardwired. This
prevents the design of characters that would form con-
tinuous horizontal lines. All 15 scan lines of the row are,
however, available so
that vertically contiguous symbol
segments
can be designed. An example of this is the three-
row-high integral sign found in the math symbol set.
Microvector sets
use the entire 9-dot-by-15-scan-line char-
acter cell without the half-shift. This allows characters to
be designed with
both horizontal and vertical continuity.
This type of
set finds its greatest application where a min-
imal set of graphic kernels is needed to represent more
complex pictorial information.
The line drawing set which
can be used to display complex
data entry forms on the
screen is an example ofsuch a set.
DISPLAY MEMORY
In its standard ordering configuration, the HP 2624A in-
cludes 16Kbytesofdisplaymemory. As
an option, however,
you
may order an additional 16K bytes.
Each displayable character uses one byte of display
memory. Each change of character set or video enhance-
ment generates a 2-byte non-displaying control sequence
which is embedded
between the displayable characters in
display memory. Similarly, each format mode function
(start field, start edits, and stop field) generates a 2-byte
non-displaying control sequence. A non-displaying ter-
minator also generates a 2-byte control sequence.
Character set changes and video enhancement changes
which occur at the same character position are combined
into a single 2-byte control sequence. Similarly,
"start
field" and "start edits" functions which occur at the same
character position are also combined into a single 2-byte
control sequence.
15
Scan
Lines
Figure 1-9. Alphanumeric Character Generation
1-4
e
(
(

Within display memory, lines from the display screen are
stored in fixed-size blocks of 6, 128, or 256 bytes. Blank
lines occupy 6-byte blocks, lines containing 120 or fewer
displayable
characters and non-displaying control bytes
occupy 128-byte blocks, and lines containing more than
120 displayable characters and non-displaying control
bytes occupy 256-byte blocks.
If a line contains fewer than 80 displayable characters, the
trailing blanks are NOT recorded in display memory as
ASCII spaces. For each line, the terminal knows where the
displayable portion was terminated and marks that point
in the memory block with an end-of-line flag. Con-
sequently, a line using only the first 40 character positions
for displayable
data may include changesof character sets,
video
enhancements, and so forth, at up to 40 separate
positions and still use only 128 bytes ofdisplay memory. A
line using all 80 character positions for displayable data,
on the other hand, may include changes of character sets,
video
enhancements, and so forth, at only 20 separate
positions without requiring a 256-byte block of display
memory.
With the standard 16K bytes, the HP 2624A will ac-
commodate the following amount of data at any given time
in display memory:
• 103 standard lines of data (128-byte blocks)
• 71 blank lines (6-byte blocks)
For each line requiring a 256-byte block, subtract 1 from
103.
If you increase the data comm buffer size, the additional
buffer memory is obtained from the RAM that is allocated
for display memory. Consequently, doing so will reduce
the
number of blank blocks and 128-byte blocks available for
display memory.
Each user-defined fUnction key definition also uses a por-
tion of the RAM that is allocated for display memory. The
rules described above may be used to determine how much
memory each key definition preempts.
Introducing
the HP 2624A
The optional 16K bytes of additional display memory
provide you with an additional 128 standard lines of data
(128-byte blocks).
CONFIGURING THE TERMINAL
The HP 2624A contains no physical straps or switches
(other
than the ON/OFF switch on the rear panel). You
configure the terminal through the use of configuration
menus displayed on the screen. Figure 1-10 shows a typical
configuration menu.
To alter the content of a particular
field, you use the tab and back tab functions to position the
cursor in the field. If the field contains an underlined
parameter, you change the value using the systemfunction
keys
(~NEXT CHol CE" and "PREVIOUS CHDI CE"). If the field
contains a non-underlined
parameter, you merely type in
the desired value. Having filled in a particular menu, you
then save the contents ofthe menu in non-volatile memory
by pressing one of
the system function keys ("SAVE CoN-
FIG"). The
parameters saved in non-volatile memory are
then used for configuring the terminal whenever a hard
reset is performed or whenever the power is turned on.
Some configuration parameters may also be altered
programmatically using escape sequences.
THE INTEGRAL PRINTER
The optional integral printer is a fast, quiet, bidirectional
thermal printing unit that can be used for generating
reproducible copy from the terminal's display memory or
from a
remote computer.
The
integral printer can reproduce anything capable of
being displayedon the terminal's screen(including the line
drawing, large character,
and math symbol sets, all of the
international language characters, and the video enhance-
ments).
TERMINAL CONFIGURATION
BELL , C 1'0_ IIIII Fr,~rneRate
LangLlageLlt,. --r!atacorn/Pr- 1 n1:er .1fWI~~~
RETURN Def kttURt'4"EtHER m Pr ,nt.erCode4
-
-
LocalEcho
.. m1 1: F net n I A I
InhHndSh,'G'
I,-,I-,SlfTst'L'
FldSeparator
E51= (j.I
rmmmo
Dec 1 rna 1 T> pe III
Bl~Terrnn·"3.tor iii
'=,1: ·:tr t Co 1
InhEI:ll Wr piC J
Auto Term
r
])
Esc ><fer IN]
A B
'.!Un 1"I"llri':"".
FORI'IAT i'IODE
I
R'~C I I 8 B, t. ,
Llne/Pal~eIDI
I: 1 eo arT e r m( r' .1
InhDcTstll\JI
I
, Rlternate Set
rpamW'j';!;_ a;
Tr .3, n:; r(1 1 t ,n'-mr'
Figure 1-10. 'JYpical Configuration Menu
1-5

Introducing the HP 2624A
Using either the systemfunction keys orescape sequences,
you can select the integral printer as the destination
device for data transfers. Having done so, you can then
perform any of the following types of data transfers using
either the system function keys or escape sequences:
• Copy one line from the display
• Copy all lines visible in the display
• Copy all data from the current cursor line through the
end ofdisplay memory
• Copy all ofdisplay memory
• Copy data directly from a host computer
In addition, the integral printer offers both report mode
and metric mode. When report mode is enabled, the in-
tegral printer output is formatted as a seriesof8 112" X II"
pages with a top and bottom margin and a tic mark bet-
ween successive pages. Metric mode produces
similar out-
put except that the pages are longer (report mode
generates 60 lines of text per page while metric mode
generates 64 lines of text per page).
You can also enable data logging to occur from either the
top or bottom of display memory. With.top logging, any
data that is forced off the top of display memory is directed
to
the integral printer and/or an external printer, which-
ever is currently selected
as a "to" device. With bottom
logging,
any data added to displaymemory, either from the
keyboard or from a data commport, is also directed to the
printer(s).
DATA COMMUNICATIONS
The HP 2624A has two data communications ports that
may both be active simultaneously. One is used for
establishinga data link with a hostcomputer and the other
is used for connecting the terminal to an external printer.
The two ports are configured separately. The
terminal can
operate at speeds ranging from 110 to 9600 baud and offers
the following asynchronous transmission modes:
Full Duplex Hardwired
Full Duplex MODEM
Half Duplex Main Channel
Half Duplex Reverse Channel
Theterminal'selectrical interface adheresto EIA RS-232C
and CCITT Y.24 communications interface specifications.
'fransmission can be performed in character mode, block
line mode, orblockpage mode;
in all cases the data may be
either formatted (a data entry form with unprotected,
1-6
protected, and transmit-only fields) or unformatted.
Formatted data may be compressed using modify data (
tags.
Using the configuration process, you may enable the
following forms ofVRC parity generation and checking:
None (no parity bit)
Odd
Even
Ones (8th bit forced to 1)
Zeros (8th bit forced to 0)
SELF-TEST
The HP 2624A is engineered for high reliability, ease of
testing, and rapid repair.
When
the terminal's power is first turned on, the power-on
self-test automatically verifies
the integrity of all ROM
(Read-Only Memory) and RAM (Random Access Memory)
chips within the terminal. It also does a CRC verificationof
the configuration data stored in non-volatile memory.
Using the systemfunction keysyou may also initiate any of
the following self-tests:
1. Power-On Test. This is the same test that is performed
at power-on.
2. Data Comm Test. This test verifies the integrity of
either data communications port. Loop-back via a test
hood or a modem may be performed. (
3. Terminal Test. This self-test does a CRC verification of
all
ROM chips within the terminal, non-destructively
verifies
the integrity of all RAM chips within the ter-
minal,
and then displays a test pattern on the screen.
The
test pattern includes all characters (and segments
in the case of the line drawing set) as well as all the
character enhancements.
4.
Printer Self-Test. This self-test verifies the proper
operationof the integral printer. A test pattern contain-
ing a variety ofcharacters in standard, compressed, and
expanded format is printed.
5. IdentifyROMs. This self-test generates a listing (on the
display screen) ofall installed ROMs.
6. Manufacturing Self-Test. This is a test that is used by
HP manufacturing personnel during the terminal
"burn-in"process. It is actually a set of tests that are run
in a continuous loop. The set consistsof the Data Comm
Test,
the Terminal Test, the Printer Self-Test (if ap-
plicable), and some additional general hardware
verification.
(

I
IUlll.Jil
L--- ______ C_O_nf_iU_u_ri_nu_t_he_li_e_rm_i_na_I----I.1 II I
INTRODUCTION
The HP 2624A is def,ligned so the various terminal
characteristics can be configured quickly and easily
through the use of menus. These configuration menus can
be displayed on the screen and their content altered and
saved (in non-volatile memory) through a few simple
keystrokes.
The content of these menus may also be altered from a
program executing in a host computer through the use of
escape sequences.
The Configuration Function Keys
1b gain access to the configuration menus through the
keyboard, use the following keystroke sequence:
II
..
conf1g
keys
This changes the function key labels to the following:
..
IiiDiiI
..
..
port1
conf1g
port2
conf1g
.. .. ..
..
terminal
config
Each function key, when pressed, causes a particular
configuration menu to appear on the screen and redefines
the function keysto a set offunctions that will assist you in
manipulating the various parameters within the menu.
The Configuration Menus
The various configuration menus can be summarized as
shown in table 2-1.
The port! and port2 menus are described in Section VII of
this manual.
The remainder of this section describes first howto change
the terminal configuration menu from the keyboard and
then how to do it programmatically .
THE TERMINAL CONFIGURATION MENU
When you press the ~term1 nlSl config" (m) function key,
the menu and function key display shown in figure 2-1
appear on the screen. Note that the menu as shown in
figure 2-1 contains the default settings for all the fields. If
you had previously changed the contentof any of the fields
and then saved the menu in non-volatile memory, the
menu would appear on the screen as you had configured it.
Table 2-1. Summary ofHP 2624A Configuration Menus
Port1 Conf1guri!ltion
Port2 Conf iguri!lt ion
The terminal includes two data communications ports. These two configuration menus allow you
to specify
two separate sets of parameters, each of which governsthe operation of one of the data
comm ports.
Termini!ll Configuri!ltion
This configuration menu defines a set of parameters that control the general operation of the
terminal (the parameters are analagous to the Keyboard Interface straps of an HP 264xterminal).
TERMINRL CONFIGURRTION
BELL Ii C I Ie' IIII[ Fr ameRa te
LanguageiM'.. --"atacIJrn~ Pr Inter
RETURI~ Def ~ TUR1'~'E.IITER _ Pr InterCode4
LocalEcho
.. n'lltFnctnIAI
InhHnd::,hh 1 G I
InhSl fTst I L-I
FldSeparator
E~,( I (~
m;mmp
De':lr!1::!.l T:.pe IIIIi
Bl~Terrnn·3.tor III
FI
'i
ruu
~,t.!lrt Col
InhEo lllJr pIC J
Auto Term
l
])
E:; I: :"',f er 1 N J
B
1·'I'_llp 5!;"I[·
F0 RI'IRT I'TO DE
ImplIed Dec D191tS II
Tab=Spaces _
~~.,~:
~ rlnter~~ull:;:_
R':,( I I 8 Bit'
L1 ne/ Pal!!€, I DI
l:learTerml~·.I
In h [I,: T:; t I 1'1 I I
Rlternate
rnT»iI";!;!. Ii
Figure 2-1. Terminal Configuration Menu
Set
2-1

Configuring the Terminal
Whenever
the terminal configuration menu is displayed
on the screen, the terminal is implicitly in format mode.
The menu contains a set of unprotected fields that you
access using
the _ and .. keys. Except when the
cursor is positioned in the fields labeled "RETURN Def",
"PrinterNull!i", "Start Col", "FldSeparator",
"BlkTermnator", or "Implied Dec Digit", the al-
phanumeric keys are disabled and you select the desired
parameters using the "H£XT CHO ICE" <_) and "PREVI OUS
CHOICE" < .. ) function keys.
The meanings of the various fields are described in
table 2-2.
BELL
Click
rrameRate
Tab-Space!!
Lan9uage
2-2
Table 2-2. Terminal Configuration Menu Fields
This field specifies whether the terminal's bell speaker is enabled or disabled. When disabled, the
bell will NOT sound when the cursor nears the end of a line nor when the cursoradvancesfrom.one
field tothe next in aformatted display. The bell will, however, still sound in response
to an ASCII Bell
control code (decimal 7; control-G).
The bell is used for alerting the operator
to certain conditions (errors, end-of-line, end-of-field).
Values: 01'1 (bell enabled)
orr (bell disabled)
Default: 01'1
The terminal is capable of producing an audible "click" as each key is pressed. This field specifies
whether that feature is enabled or disabled.
Values: 01'1 (click enabled)
orr (click disabled)
Default: 01'1
This field specifies what line frequency (50 or 60 Hz) the terminal is designed to operate at. The
screen refresh rate is then synchronized to the specified frequency. If this field is set to the wrong
value, the images on the screen will pulsate visibly.
Values:
50 (for 50 Hz power source)
60 (for 60 Hz power source)
Default: 60
When this feature is enabled, pressing the _ key generates the number of ASCII space codes
required to move the cursor forward
to the nexttab stop. Ifno tab stops exist between the current
cursor position and the end of the line, the bell sounds and no spaces are generated. Similarly,
pressing the .. key generates the number of ASCII backspace codes required to move the
cursor backward
to the preceding tab stop (if the cursoris already located atthe left margin when
the backtab is attempted, the bell sounds and no backspaces are generated).
Note that when operating in local mode, this function actually changes data characters within
display memory to spaces. In remote mode, the spaces are transmitted over the data comm port
and the data characters within display memory are NOTchanged unless the spaces are echoed
back (either locally or from the host computer).
Values:
YES (Tab = Spaces enabled)
1'10 (Tab = Spaces disabled)
Default:
1'10
As will be described in Appendix B, Keyboards and Character Sets, of this m!inual, the HP 2624A
can be ordered with any of the following keyboards:
United States (standard)
Swedish/Finnish (option 001)
Danish/Norwegian (option 002)
French (option 003)
German (option 004)
United Kingdom (option 005)
Spanish (option 006)
(
(
(

Language
(Cont'd)
Datacom/Printer
RETURN Def
RETURN-ENTER
Printl!rCode4
Configuring the Terminal
Table 2-2. Terminal Configuration Menu Fields (Continued)
When the terminal includes any of the optional keyboards, it also automatically includes the
appropriate language characterset ROM. This field specifies which national keyboard
format is to
be used
in interpreting keystrokes.
Values: USASCII (United States)
SVENSK/SUOMI (Swedish/Finnish)
DANSK/NORSK (Danish/Norwegian)
FRANCA I S azM (French AZERTY layout with mutes)
FRANCAIS CjwM (French aWERTY layout with mutes)
FRANCA I S az (French AZERTY layout)
FRANCA I S CjW (French aWERTY layout)
DEUTSCH (German)
UK (United Kingdom)
ESPANOL M (Spanish with mutes)
ESPANOL (Spanish)
For the French keyboard layouts, the AZERTYand aWERTY designations refer to the location of
the A, Z, a, and W keys as follows:
AZERTY: Row 3 AZERTY(etc.)
Row 2 • QSDCl!tc.)
Row 1 -WXCCl!tc.)
QWERTY: Row 3 QWERTY(etc.)
Row 2 • A S D C I!t c. )
Row 1 •
ZXCCl!tc.)
For the French and Spanish keyboard layouts, the mutes designation refers to the mannerin which
certain accent character keystokes are handled
(. and .. on the French layout and ' on the
Spanish). If the mutes are enabled, those keystrokes will generate the particularaccent character
but will NOT move the cursor. When you then type another character, that character replaces the
accenton thescreen (and the ASCII code
for the newcharacter replacesthe accent code in display
memory). If the terminal is in remote mode, the code
for the accent character istransmitted to the
host computer at the
point in the datastream whereyou pressed the accent key. Mute mode is not
supported
in block mode.
Default: USASCI I
This field specifies which data comm
port is assigned to the host computer and which is assigned
to an external printer.
Values: Port 1 /Port2 = Port 1 assigned to host; port 2 to printer.
Port2lPort 1 = Port 2 assigned to host; port 1 to printer.
Default:
Port 1 /Port2
This field specifiesthe definition of the _ key following power-on or a hard reset (in eithercase,
the definition contained in the User Keys menu is destroyed). The default definition is an ASCII
<CR>. The definition may consist of up to two characters. If the second character is a space, it is
ignored.
Default: <CR>
Thisfield specifies whether or not you wantthe _ key to function as though it were the II key.
The value "YES" causes both keys to function in the manner defined for the II key when the
terminal is
in remote mode (the _ key definitions in both the terminal configuration menu and
the user keys menu are ignored). Thevalue
"NO" causes each key to function according to its own
definition.
Values: YES
NO
Default: NO
This field specifies which printer (an external printer or the integral printer) will respond to device
code
"4" when the terminal receives a device control escape sequence from the host computer.
2-3

Configuring the Terminal
Table 2-2. Terminal Configuration Menu Fields (Continued)
~--~--------------~(
PrinterCode4 Device code "4" is ordinarily used only for selecting an external printer. Through the use of this
(Cont'd) configuration parameter, however, you can redirect the device control operations to the integral
printer without altering the host computer program.
PrinterNull5
LocalEcho
Cap~ Lock
Values: EXT (external printer)
INT (integral printer)
Default: EXT
This field specifies the number of ASCII null codes (0-255) to be transmitted to an external printer
after each ASCII control code.
Value: 0-255
Default: 0
This field is the functional equivalent of the HALF/FULL DUPLEX toggle switch on an HP 2645
terminal.
ON = Characters entered through the keyboard are both displayed on the screen and transmitted
to the host computer.
OFF = Characters entered through the keyboard are transmitted to the host computer only (if they
are
to appear on the screen, the host computer must "echo" them back to the terminal).
Default:
OFF
This field is the functional equivalent of the CAPS LOCK latching key on an HP 2645 terminal.
ON = The terminal generates only Teletype-compatible codes: uppercase ASCII (00-5F, hex) and
DEL (7F, hex). Unshifted alphabetic keys (a-z) generatethe codes for their uppercaseequiva- (
lents, the {, I, and} keys generate the codes for [, \, and I (respectively). The keys for gen-
erating -
and' are disabled.
Start Col
ASCI18B1ts
Xm!tFnctn(A)
2-4
OFF = The terminal generates the full 128-character ASCII set of codes.
Default: OFF
If the line in which you are entering data is the bottommost used line in display memory (there are
no printing
or non-printing characters following the current line in display memory), the terminal
automaticallygenerates a logical start-of-text
pointer to designatethe leftmost character that you
enter in the line. This
pointer remains with the line in display memory until the line is deleted.
When you areoperating in MODIFY LINE or MODIFYALL modeand you press II or II1II, thedata
transmission from the terminal normally begins at the logical start-of-text
pointer in the particular
line. If the line has no logical start-of-text pointer, however, the data transmission begins at the
designated start column. This designated start column can be defined and saved in non-volatile
memory using the Shrteol field ofthe terminal configuration menu. The active value of thisfield
can also be temporarily redefined using one of the "marg! n!5/tab!5/col" function keys.
Value: 1-80
Default: 1
When this operating mode is enabled (-YES), the terminal transmits 8-bit ASCII codes in which the
eighth (high-order) bit, when set (= 1), indicates that the character is from the alternate character
set. This is a Hewlett-Packard convention and you will ordinarily use it only when communicating
with an
HP 300 Computer System or in conjunction with certain HP line printers (such as the HP
2635A/B Printing Terminal).
Values:
YES = 8-bit codes.
NO = Standard 7-bit codes.
Default: NO
This field is the functional equivalent of keyboard interface strap A on an HP 2645 terminal.
(

XmitFnctn(A)
(Cont'd)
SPOW(B)
InhEolWrp(C)
L1 ne/P"ge(D)
InHndShk(G)
"nd
I nh DC2(H)
Configuring the Terminal
Table 2-2. Terminal Configuration Menu Fields (Continued)
YES = The escape code sequences generated by control keys such as 1/1 and II are trans-
mitted to the host computer. If local echo is ON, the function is also performed locally.
NO = The escape code sequences for the major function keys are executed locally but NOT
transmitted to the host computer.
Default: NO
This field is the functional equivalent of keyboard interface strap B on an HP 2645 terminal.
NO = Spaces entered through the keyboard will overwrite existing characters.
YES = Enable SPace OverWrite (SPOW) latch. When the SPOW latch is off, overwriting occurs as
normal. When the SPOW latch is on, spaces entered through the keyboard move the cursor
forward
but do not overwriteexisting characters. The SPOW latch is turned on by acarriage
return and is turned
off by a line feed, home up, or tab. It may also be turned on and off pro-
grammatically
through the use of an <ESC>&k sequence as follows:
ON: <ESC>&k 1N
OFF: <ESC>&k ON
Default: NO
This field is the functional equivalent of keyboard interface strap C on an HP 2645 terminal.
NO = When the cursor reaches the right margin, it automatically moves to the left margin in the next
lower line (a local carriage return and line feed are generated).
YES = When the cursor reaches the right margin, it remains in that screen column until an explicit
carriage return or other cursor movement function is performed (succeeding characters
overwrite the existing character in that screen column).
Default:
NO
This field is the functional equivalent of keyboard interface strap D on an HP 2645.
LINE = When operating in block mode, the terminal will transmit data a line at atime (or a field at a
time if format mode is enabled).
PAGE = When operating in block mode, the terminal will transmit data a page at a time.
For adetailed description
of the differences between block lineand block page mode refer to "The
ENTER Key" in section IV of this manual.
Default:
LINE
These fields are the functional equivalents of keyboard interface straps G and H on an HP 2645
terminal. Together theydetermine what type of handshaking is to be used whentransferring blocks
of data from the terminal to the host computer.
The various types of
block transfers that may occur are as follows:
• A data transfer initiated by pressing the
am key in character, block line, or block page mode.
• A data transfer initiated by pressing the
am or _ key in modify mode.
• A data transfer initiated by pressing a transmit only (T) user key ("-B).
• The terminal's response to a cursor sense, terminallD status, primary status, secondary status,
or device status request issued from the host computer.
• The device control completion code (S, F, or U) transmitted bythe terminal in conjunction with a
device control operation initiated by the host computer.
When performing
block transfers, there are three possible handshakes:
1. No handshake; terminal merely transmits block of data.
2-5

Configuring the Terminal
inHndShHG)
and
i
nh DC2{H)
(Cont'd)
2-6
Auto Term{J)
and
ClearTerm{K)
Table 2-2. Terminal Configuration Menu Fields (Continued)
2. Computer sends <DC1); terminal transmits block of data.
3. Computer sends <DCl ); terminal responds with <DC2); computer responds with another <DCl >;
terminal transmits block of data.
In general, the I nhHndShk (G) and i nh DC2{H) fields have the following effects:
inhHndShk{G) • YES
inhDC2{H) • YES
Both • YES
eliminates the use of the DC1 handshake (terminal will either use the
DC1/DC2/DCl handshake or no handshake at all).
eliminates
the use of theDCl IDC2/DCl handshake (terminal will either use
the DCl handshake or no handshake at all).
No handshake.
Specifically, however, the type of handshaking used for block transfers is determined by a
combination of the following factors:
1. The type of block transfer to be performed.
2. What mode the terminal is currently operating in (character, block line, block page, or modify
mode).
3. The setting of the inhHndShk(G) and inh DC2{H} fields.
If
your terminal is connected to a Hewlett-Packard computer system, you will find that the default
settings for these fields (both OFF) are usually adequate for your purposes. If you are concerned
about the specific type of handshake to be used for one or more of the particular types of block
transfers, however, you should use the following summary to verify (or alter) the settings of the
inhHndShk(G) and Inh DC2(H> fields:
1. GIll key in block mode; or
GIll or _ key in modify mode; or
Transmit only (T) user key in block page mode.
inhHndShk{G)
(i9nored)
inhDC2(H) NO - - -)DCl IDC2/DCl
i nh DC2(H)
YES - - ->no hand~hake
2. GIll key in character mode.
inhHndShk{G) •
YES
inhDC2(H} • NO--->DClIDC2/DCl
Anyother combination --->nohand.hake
3. Transmit only (T) user key in block line or character mode; or
Cursor sense, terminallD status, primary status, secondary status, or device status request; or
Device
control completion code.
inhHndShk(G) •
NO--->DCl
inhHndShk(G) 'YES
inhDC2(H) • NO--->DC1/DC2/DCl
inhHndShk(G) = YES
inh DC2(H) • YES - - -)no hand.hake
Defaults: inhHndShk(G) =
NO
i nh DC2(H) = NO
These fields are the functional equivalents of keyboard interface straps J and K on an HP 2645
terminal.
c
(
(

Auto Term(J)
end
ClearTerm(K)
(Cont'd)
InhSlfT~t<L>
E5c XferOD
InhDcT5t(W)
FldSeperetor
Configuring the Terminal
Table 2-2. Terminal Configuration Menu Fields (Continued)
The Auto Term(J) parameter only has an effect when the II key is pressed in block mode.
AutoTerm(J) • YES
Insert a non-displaying terminator at the current cursor position and then move the cursor
backward
to the previous displaying or non-displaying terminator (if none is found, the cursor
moves back
to the "home" position).
AutoTerm(J) • NO
Do NOT insert a non-displaying terminator and do NOT movE!. the cursor backward.
CleerTerm(K) •
YES
Ifthe displaytransfer operation isterminated by encountering a non-displaying terminator, clear
the terminator.
ClearTerm(K) =
NO
Do NOTclear any non-displaying terminators.
Defaults: Auto Term(J) • NO
CleerTerm(K) • NO
This field is the functional equivalent of keyboard interface strap L on an HP 2645 terminal.
YES • The Power-On Test, Terminal Test, and Manufacturing Test areenabled (refer to section IX of
this manual).
NO • The Power-On Test, Terminal Test, and Manufacturing Test are all disabled. Any attempt
to initiatethese tests (including an <ESC)z sequence) results in the "FUNCTION LOCKED" error
message;
the terminal operator clears the message by pressing _. The data comm self-
test is not affected by this field.
Default:
NO
This field is the functional equivalent of keyboard interface strap N on an HP 2645 terminal.
YES • When transferring databetween displaymemoryand an external printer, escapesequences
relating to the display(such as those specifying displayenhancements, format mode fields,
and alternate character sets) are sent to the external printer if encountered within the
data.
NO • Escape sequences relating to the display are not sent to the external printer.
Default: NO
This field is the functional equivalent of keyboard interface strap Won an HP 2645 terminal.
YES = The data comm self-test is enabled (refer to section IX of this manual).
NO • Thedata comm self-test is disabled. Pressing the" DATACOMMTEST" (m) function key (inthe
"5ervice keY5"set) or issuingan <ESC)x results in the "FUNCTION LOCKED" errormessage; the
terminal operator clears the message by pressing _.
Default: NO
When yOu press the II keywhile the terminal is in block page mode and displaymemorycontains
a formatted display,
the terminal automaticallytransmits the specified field separator character at
the end
of each unprotected field (except the final one).
Value: Any ASCII character
Default: <US)
2-7