ABACUS BOOKS  (616)698-0330
Publishers of:
 
The Complete Guide to the
Atari Portfolio
 
$18

AC Adapter [HPC-401]
An inexpensive device designed to
operate the Portfolio on standard
household current. 120V.
A model matched to European power
requirements is available in countries
outside of the U.S.  $9.95

Address Book
A database application provided in the
ROM of the Portfolio. Access is
obtained by holding the Atari key and
pressing the A key.
 
The autodialer will provide two
options of each phone number if the
entry is made on the top line as
follows:
 
Artisan Software  (209)239-1552 [main]

ADR file
A file created by the built-in Address
Book application of the Portfolio.
Unless changed by the user, the
Portfolio will assume UNNAMED.ADR as
the full filename.

application
A program designed to provide
functional or practical results.
Also applies to a method in which
computer related products are used.

app (applications)
A Portfolio DOS command that calls up
the appications menu. Type:
 
app
 
to get the menu. Type:
 
app/a
 
to get the Address Book application
to run.

ARTISAN SOFTWARE (209)239-1552
P.O. Box 849
Manteca, CA  95336
Donald A. Thomas, Jr.
 
Makers of TransporT; a file transfer
application for Atari desktop 16-bit
computers. Requires serial interface
and null-modem cable.
$24.95 +$1.50 S&H
 
Artisan will digitize corporate logos
and other artwork for the Portfolio.
$10 per screen. SASE and disk required
for completed work to be returned.

ascii (American Standard Code)
Universally compatible assignment of
character identification numbers.
Adopted codes provides text file
compatibility between all computers.
The Portfolio's built-in applications
create such universal files.

ATARI COMPUTER CORPORATION (408)744-0880 [cust serv] (408)745-2191 [BBS] (408)745-2004 [tech] (408)745-2008 [fax]
1196 Borregas Ave.
Sunnyvale, CA  94089-1302
 
Makers of the Portfolio and an
assortment of advanced video games and
home/business computers.

ATARI EXPLORER MAGAZINE  (218)723-9202 [subscribe]
29-05 Broadway, Suite 2
Astoria, NY  11106
John B. Jainschigg, Publisher
 
Up to date reviews and information on
all Atari products and 3rd party add-
ons. Six issues per year.  $14.95

AUTOBYTE  (514)637-6232 [main]  (514)637-1491 [fax]
Selection of Portfolio software
titles. See Xoterix listing.

autoexec.bat
A file which is created by the Text
Editor and contains instructions as
to what the computer should do when
warm or cold booted. The Portfolio
will look for such a file on the C:
drive if there is not one found on
the A: drive. A good beginner's
AUTOEXEC.BAT file might be written
as follows:
 
@echo off
prompt $p $
cls
UPDATE
app
 
You may use the clipboard to store the
above five lines and paste them into
the Text Editor. UPDATE.COM must be
copied to the appropriate drive for
line four to work properly.

AWARE ELECTRONICS  (302)655-3800 [main/fax]
P.O. Box 4299
Wilmington, DE  19807
 
RM-60 peripheral plus software turns
the Portfolio into a portable geiger
counter.  $149.50

backup
Refers to the wise practice of making
more than one copy of important files.
Backup files should be saved to
different places than the original
file is saved. If something wrong
happens to the original file, the
backup is used to restore the data.

bar code scanner
A devise used to read the bar codes
(often referred as UPC symbol) found
on product packaging. Bar Codes are
also used in other applications where
digital recognition is applied.
 
A bar code scanner may be connected
to the Portfolio via the Serial
Interface. Driver software would be
required. Information may be obtained
from Monterey Bay Whaling Company.

batteries
The Portfolio operates on three AA
batteries for up to 40 continuous
hours . . . about 4 to 6 weeks of
average use. NiCad (rechargeable)
batteries are not recommended by the
manufacturer and it may void your
warranty to use them. However, many
users claim NiCads work fine for them.
 
RAM Memory Cards use a button battery
(CR2016). Batteries in memory cards
will sustain data for 9 to 12 months
depending on use. Users are urged to
pencil a 9 month anniversary date on
the label and replace the battery
when as the date draws near.

bit
The smallest measure of memory in a
computer. There are 8 bits in a byte.
Bits may either be on or off (1 or 0).
The combination of 8 bit settings
dictates the value found in a byte.

bit-mapped graphics
Graphics which are comprised of random
screen dots turned on or off to make
a picture. Each dot is controlled
ultimately by one bit.

BSE  (714)832-4316 [main] (714)832-5381 [fax]
14701 Candeda Dr.
Tustin, CA  92680
Steve Schlanger, President
 
Makers of Flashdrive; portable hard
drives for the Portfolio. From 20Meg.
Hard Drives utilize rechargeable
batteries. Connects to Parallel Port.

byte
A group of 8 bits. The combination
of bit settings within a byte
determines the value of that byte. In
a 16 bit computer, the processor can
address 16 bits or 2 bytes at once.

cable
A wrapped set of wires with specific
connectors on both ends. Cables may
differ by which pins are connected
from end to end.

Calculator
One of five built-in applications of
the Portfolio. It may be accessed by
any one of several ways including
the pressing of the C key while
holding the Atari key.

CANON  (800)848-4123
Makers of an excellent notebook size
bubble jet printer. Uses standard
paper and surprisingly quiet.
$449.95

chkdsk (check disk)
A DOS command which returns details
about a given storage drive. Type:
 
chkdsk c:
 
to get information about the built-in
RAM disk.

clipboard
A utility which captures text blocks
within the built-in Portfolio
applications. F3 (function 3) provides
access to the clipboard. Use MARK at
the start of the text block. Move the
cursor to the end of text. Use CUT to
delete the text. Use STORE to simply
capture the text. PASTE places the
text cut or stored to the current
cursor position.

cold boot
Restarting the Portfolio by removing
batteries and AC and pressing a silver
plate found in the long, narrow notch
in the battery compartment. The plate
may be gently pressed back in the
machine for five to ten seconds. If
performed properly without an
installed memory card, the copyright
screen will appear and a keyboard
language will be requested.
 
A cold boot may be required from time
to time as the Portfolio is used often
and is subject to user and environment
changes.
 
Data stored on the C: drive will be
purged during a cold boot. Data should
usually be stored to a memory card in
the A: drive.

compatible
A term which references the ability
to function and/or communicate between
two separate computer systems.
The Portfolio creates files compatible
to all computer systems. The Portfolio
may also be connected to most any
other computer for easy file transfer.

COMPUSERVE (800)848-8199 [sign-up]
Call and ask for operator 198 for
a free introductory sign-up kit and
$15 usage credit.
 
Use CompuServe as your complete
Portfolio resource for hot news, user
interaction and hundreds of software
downloads. Requires Serial Interface,
cable, modem and communications
software.

COMPUTERBOOKS  (714)966-2023 [main]  (714)966-0117 [fax]
Newport Trade Centre
20351 Irvine Avenue, #9
P.O. Box 9167
Newport Beach, CA  92658
 
Makers of Pharmaceuticals and
Physicians' Desk Reference I software
for the Portfolio. Perfect for interns
and the stablished medical
community alike.
 
New applications forthcoming.

com1
Many computers may offer more than one
RS-232 serial port. COM1 refers to the
first one in sequence. When there are
more than one on a MS-DOS orientated
machine, the others would be
designated as COM2, COM3, etc.
 
The Portfolio's Serial Interface
provides a COM1 9-pin serial port.

config.sys
This is a file that may be created by
the Text Editor and saved to the C:
drive of the Portfolio. The contents
of the file help the Portfolio to
establish operational defaults.
 
An ideal CONFIG.SYS file would read
as follows:
 
Files=20
Buffers=32
Country=001
 
If you wish, use the clipboard and
capture the above three lines. Then
you may paste them in an empty Text
Editor file and save the file as
C:\CONFIG.SYS.

copy
A DOS command that allows one or more
files to be copied from one location
to another. Type:
 
copy c:\*.* a:\*.*
 
to copy all files in the root
directory of the C: drive to the root
directory of the A: drive. Type:
 
copy a:\*.dry c:\system\*.dry
 
to copy all Diary files from the A:
drive to the system directory on
the C: drive.

COURSEMASTER  (718)383-4968 [main]  (718)383-1864 [fax]
232 Richardson St.
Greenpoint, NY  11222
 
Makers of the Marine Device Interface;
permitting control over marine
transmitting devices.

cursor
The marker on the computer screen
which indicates where text will appear
when typed. Sometimes the cursor is
a block or it may be an underline. In
some programs it may blink. The author
of the program has the power to design
a custom cursor to meet his or her
needs.

cursor key
One of a group of keys which changes
the position of the cursor. Cursor
keys are usually grouped together and
denoted by north, south, east and west
arrows. On the Portfolio, they are
the four arrow keys on the lower right
portion of the keyboard.

database
A database is a program which provides
the entry and recall of formatted
information. The Address Book of the
Portfolio is an excellent database in
its simplist form. It may be used for
a wide variety of topics other than
just names and addresses.

data file
A file which contains information.
 
Datafiles are created by running
programs and often only accessible by
the original program.
 
The built-in applications of the
Portfolio create ASCII data files
which are universally compatible
with most word processors and
databases.

delete
To remove information or a file from
memory of a computer.
 
To remove a file in the Portfolio
using DOS, type:
 
DEL FILENAME.EXT

desktop computer
A computer designed to fit on the top
of a desk or work area. Larger
computers are known as mainframes and
are often set up in tempature-
controlled rooms. Smaller ones are
called laptops or portables or
palmtops.

Diary
Appointment/Calendar application
built-in the Portfolio's ROM. Access
it by holding the Atari key and
pressing the D key.
 
The alarms will only work if they are
saved to a file called DIARY.DRY in
the system directory of the C: drive.

DIP SYSTEMS  (0483)301555 [main] (0483)301434 [fax]
32 Frederick Sanger Road
Surrey Research Park
Guildford
GU2 5XN
 
Distributors of many exceptional
softawre and peripheral items for
the Portfolio in European countries.

dir (directory)
A list of the files saved in on a
specified drive. To get a directory
of the files of the C: drive using
DOS, type:
 
DIR C:\*.*

documentation
The instructions to inform the user
how to use something (s)he has
acquired. Sometimes it is printed in
a book or on paper. Other times it may
appear as a separate file with a .DOC
or .TXT extender.
 
One common documentation filename is:
 
README.DOC

DOS (Disk Operating System)
Also known as OS, DOS is the
fundamental group of commands that
tell the computer how to follow the
users instructions to display
directories, copy files, run programs,
etc.

download
To receive information from a source
outside of the computer into the
computer. Downloading usually requires
communications software. Information
may come from other computers directly
or over phone lines.

DRY file
A file created by the built-in
CALENDAR/DIARY application of the
Portfolio. Unless changed by the user,
the Portfolio will assume DIARY.DRY
as the full filename. This file must
be saved in the SYSTEM directory on
the C: drive if the user wishes the
alarms to function automatically.

ESSEX MARKETING SERVICES  (203)651-8284 [main]  (203)676-9481 [fax]
272 Old Farms Rd.
Simsbury, CT  06070
 
Source for Forth Programming System
$95

EXTECH INSTRUMENTS (617)890-7440 [main] (617)890-7364 [fax]
150 Bear Hill Rd.
Waltham, MA  02154
 
Makers of small, portable serial
printers.  $249

extender
A 1, 2 or 3 character tail to a
filename. The file: UNNAMED.ADR has
an extender of 3 charaters (ADR) and,
in this case tells the system and the
user that the file is an Address Book
file.

fdisk (format RAM disk)
A Portfolio DOS command which allows
the user to change the size of the
built-in RAM disk. The drive will be
set to the nearest 8K acceptable
increment. The smallest is 8K and the
largest in a 128K Portfolio is 80K.
 
Type:
 
fdisk 8
 
to change from the default 32K RAM
disk to an 8K RAM disk. The larger
the RAM disk, the smaller the
available working RAM to develop
files. NOTE: all files on the C:
drive will be lost when the fdisk
command is used.

file
A string of information which is saved
to disk. programs are saved as one
form of a file. Programs load and save
data files.
 
The Portfolio defaults to filenames
beginning with UNNAMED until manually
changed by the user.

File Manager  [HPC-704]
A special programmed released by Atari
Computer Corp. to help users have
access to DOS commands with less
confusion. Many people refer to it as
a mini WINDOWS for the Portfolio. It
is distributed on a special ROM Card
and currently packaged with new
Portfolios. Users may order it from
Atari for only $20 plus shipping.

filename
A name given to a string of infomation
saved to a storage device such as the
C: drive or a Memory Card. Each file
must have a unique filename.
 
Filenames may be up to 12 chacaters.
The first 8 are ASCII characters, the
9th is a period and the remaining
are called an extender.

format
A DOS command to format a RAM memory
card. All memory cards must be
formatted after the battery is
installed and before it may be used.
You may also reformat a card if it
is desired that all files should be
deleted on the card. Type:
 
format a:
 
to format the A: drive. Use the fdisk
command to format the C: drive.

ft.com
A program which is packaged with
Atari's Smart Parallel Interface. It
runs on most MS-DOS compatible
computers and allows files to be
exchanged with the Portfolio over the
LPT1 parallel ports. A straight line
cable is required.

function key
On larger computers, the function keys
are grouped together and identified
as F1, F2, etc. F10, F11, etc. may
be accessed by pressing the same keys
while the Shift key is pressed.
 
Function keys do different things in
different programs. DOS makes use of
them too when no program is running.
They will always be explained by the
documentation.

graphics
This term refers to any non-text
display. A simple line or circle is
known as graphics. Graphics may be
used to draw borders or charts.
 
Advanced grahics involve bit-mapped
pictures and illustrations. The
Portfolio can display bit-mapped
graphics and simple graphics.

hardware
Computer related products which are
mechanical or solid state. Computers,
printers, modems and disk drives are
all examples of hardware.

help
A Portfolio DOS command thar returns
a list of Portfolio type-in DOS
commands.
 
From DOS type:
 
help

INTERLOOP  (408)922-0520
Source for HPIL Interface. This
peripheral allows the connection
of HP standard peripherals to
the Portfolio. Up to 23 devices may
be connected at one time.

keyboard
The panel on which a user types to
interact with a computer. The panel
is made up of many keys.
 
The Portfolio's keyboard is called
a QWERTY keyboard.

laptop computer
A computer which is designed to be
frequently carried. It typically has
a built-in screen and keyboard and
operates for a few hours on batteries.
Also known as just laptops, they may
weigh between 8 and 16 pounds.

load
The act of retoring data to an
application which was previously
saved. An example might be recalling
a document in to a word processor.

lpt1
Many computers may offer more than one
parallel port. LPT1 refers to the
first one in sequence. When there are
more than one on a MS-DOS orientated
machine, the others would be
designated as LPT2, LPT3, etc.
 
The Portfolio's Smart Parallel
Interface provides a LPT1 25-pin
parallel port.

masked ROM
A type of ROM memory card available to
developers. Masked ROM cards are
manufactured with the software already
on them. Masked ROM cards are less
expensive, but a large minimum order
is required.
 
Contact Atari for more information.

MEGABYTE COMPUTERS (817)589-2950
909 Melbourne
Hurst, TX  76053
 
Megabyte Computers can internally
expand the Portfolio RAM to 512K.
$349 or $549 including Portfolio.

merge
The combining two separate files into
one. Many file based applications
support the ability to import one file
into another. If the combined file is
saved under a separate name, the two
original files are not changed.

modem
A device hich converts computer data
to sound pulses understood by the
telephone system. Many of the modems
available today are known as Hayes
compatible meaning they use the same
instructions to operate. A special
program must run on the computer to
use the modem. Modems offer different
features including maximum tansmission
speed. An accepted standard today is
2400 baud although faster and slower
speeds are often used.

MONTEREY BAY WHALING COMPANY (408)475-4290 [main]  (408)476-2456 [fax]
2681 N. Rodeo Gulch Rd.
Soquel, CA  95073
John Feagans, Engineer
 
Consultants and developers;
specializing in communications and
peripherals for the Portfolio.

NAIDITCH CONSULTING  (312)362-3600 [main]  (312)362-2379 [fax]
440 South LaSalle, #1767
Chicago, IL  60605
 
Specialized stock portfolio tracking
software.

off
On the Portfolio, turning it off
simply disables the screen and other
energy-consuming functions. Either
the batteries or AC will continue to
support RAM even if the off command is
used. Type: off at the DOS propt or
press Fn/O to turn the Portfolio off.

ONLINE TECHNOLOGIES  (216)831-6160 [main]  (216)464-3317 [fax]
23715 Mercantile Rd., #203
Beachwood, OH  44122
Kenneth N. Oif
 
TimePac-5 time billing software

operating system
The operating sytem is the software
in ROM which instructs the Portfolio
how to behave to user intervention.
See DOS.

organizer
An organizer is a small electronic
device which provides elementary
computer functions such as note
taking and calculator features.
On the downside, organizers are
difficult to expand or connect
computer peripherals. Most users can
not simply write, load or save their
own software on an organizer.

OTP card (One Time Programmable)
A form of ROM Card available from
Atari. OTP cards may be programmed
once on an EPROM burner using Atari's
EPROM adapter board.
 
Call Atari for more nformation.

overwrite
Overwriting is the same as erasing or
deleting a file and saving a new one
by the same name. The new one is most
likely different from the original
and the original is no longer
accessible if the act of overwriting
is used.

PARAGON TECHNOLOGIES  (800)255-9411
P.O. Box 273511
Boca Raton, FL  33427
 
DUATS and flight planning software
for avaition pilots.

Parallel Interface [HPC-101]
The Smart Parallel Interface by Atari
is an optional peripheral which
provides a standard parallel port.
Parallel ports are usually used to
connect printers. See LPT1. Atari
also uses this interface for file
transfers with most MS-DOS compatible
PCs which also offer an LPT1
bi-directional parallel port.  $49.95

PC Card Drive [HPC-301]
A device which installs in an empty
8-bit full card slot of a desktop PC.
The device allows users to plug
Portfolio Memory Cards directly in a
PC to be read as a diskette.  $99.95

pixel
A single dot on a monitor or screen.
The Portfolio has 15,360 pixels.
(240x64)

PowerBasic [HPC-705]
A programming package due to be
released by Atari in September of
1991. It supports graphics and a host
of other popular Basic functions.
 
Contact Atari for more information.

PRACTICAL PERIPHERALS  (800)442-4774
Ideal pocket modem about the size of
a pack of cigarettes. No extra
batteries required . . . line powered.
It supports 300, 1200 and 2400 baud.
$159

printer
A device which is connected to a
computer through the parallel or
serial port. This device is loaded
with paper and provides text and
images of files or graphics from
the computer.

program
Another term for software or the act
of creating software. Programs are
saved as files and have special
extenders on the Portfolio. Such
extenders are: .COM, .EXE and .RUN.

programmable
The ability of the end user to create
programs for the computer they
acquired.

prompt
A DOS command which allows the user
to change the symbols displayed when
the computer is expecting input from
the user. A good prompt command might
be:
 
prompt $p $
 
This tells the computer to display
the current directory path, then
leave a space. See the Portfolio
owners' manual for other options
using the prompt command.

public domain
Software and infomation released to
be freely distributed and used by the
public. Usually such software my not
be sold by anyone although many
companies may sell the disks such
software are on as well as charge a
fee to have copied it to that disk.

PULSE METRIC, INC.  (619)546-9461 [main]  (619)546-9470 [fax]
10225 Barnes Canyon Rd., #A100
San Diego, CA  92121
 
Blood pressure and home health
monitoring system.  $299

QWERTY keyboard
A keyboard with the alphabet laid out
like a typewriter. The QWERTY
comes from the fact that the letters:
Q, W, E, R, T and Y are found in
sequence along the top left portion
of the keyboard.

RAM disk
A portion of RAM memory put aside to
interact with the computer like a disk
drive. In the Portfolio, it is
designated as the C: drive.
 
The benefit of a RAM disk is
extremely fast file access. The
disadavntage is that the information
may be easily lost if the computer
locks up or loses power.

RAM (Random Access Memory)
There are two basic forms of memory
in any computer. RAM is the portion
that changes as it is being used.

ren  (rename)
A DOS command which provides a user
the means to change the name of an
existing file. Type:
 
ren c:\unnamed.txt myfile.txt
 
to change unnamed.txt on the C: drive
to myfile.txt

reset
The act of forcing the computer to
return to a specific point of
operation. Reset usually refers to a
warm boot.

ROM (Read Only Memory)
There are two basic forms of memory
in any computer. ROM is the portion
that always remains the same. ROM
stores the data programmed by the
factory that enables the computer to
operate.

RS232
A data communications standard
recommended by the Electronics
Industries Association. Most user-
based computers adhere to this
standard.

RUN file
On the Portfolio, a .RUN file is
specially developed to operate in
place on a ROM card so that minimal
RAM is used and available to the user
for developing data files. Developers
interested in this technology are
encourgaed to contact Atari for more
information.

save
The act of naming a file and
copying data out of the computer's
RAM into the file. On the Portfolio,
this may mean copying from the
working RAM into another portion of
RAM called storage RAM (the C: drive).

search
To look for a specified portion of
data within a file or in memory.
Usually the data must match exactly.
In some cases, applications may offer
search capabilities without case
sensitivity; meaning the group of
characters may matched whether they
are capatalized or not.

Serial Interface [HPC-102]
A device which connects to the right
expansion port of the Portfolio. It is
used to provide an industry standard
9-pin RS232 serial port.
 
Serial ports are commonly used for
communications such as modems, but
may also be used for other devices
such as some printers, bar code
readers, etc.

shareware
Software written and released for free
public distribution. If a user likes
it and uses it, (s)he is requested
to send a nominal monetary amount to
the author. The address and possible
contribution benefits are described
by a text file or within the program.

software
One or more files which are saved
to a storage medium. Other terms
for software are applications,
programs and utilities.

space/return
Two consequtive keypresses. The
first being the space bar, the second
being the return key.
 
These two characters are used to
reserve blank lines with an Address
Book file. They also may cause
hard-to-predict problems in the Text
Editor of some versions of the
Portfolio. The latter problem may be
resolved by running the program
called UPDATE.COM found on the
File Manager card and in the public
domain.

spreadsheet
An application which provides access
to calculations via column and row
data entry. The files created by such
aplications are also known as
spreadsheets.

syntax error
Usually this refers to a typing error
on the part of a user. It rarely
causes any damage to the operation
of the computer or the integrity of
data and is remedied by retyping the
entry correctly.

system error
A problem which may develop in the
operation of a computer. A system
error is sometimes recoverable by
a warm boot and sometimes only
remedied by a complete cold boot.
 
With millions of bits constantly
changing in a computer, system
errors can be caused by many things
and are not always predictable.

TEKNOW!  (602)968-7656 [main]  (602)968-7366 [fax]
1500 S. Priest, #101
P.O. Box 25486
Tempe, AZ  85285-5486
 
Alpha Paging software.  $89.99

Text Editor
One of the five built-in applications
of the Portfolio. Also known as a
word processor, the Text Editor may be
activated by pressing the E key while
holding the Atari key.
 
Please run a program found on the
File Manager card or in the public
domain called UPDATE.COM before using
the Text Editor.

TXT file
A file created by the built-in Text
EDITOR application of the Portfolio.
Unless changed by the user, the
Portfolio will assume UNNAMED.TXT as
the full filename.

UPDATE.COM
This special file has been released
to the public domain for wide and
low cost distribution. It is also
found on the File Manager Card. By
running the program, the internal
ROM is circumvented in operation on
special occasions to fix or improve
the completion of the operation in
progress. UPDATE.COM repairs the
Space/return situation in version
1.072 of the Portfolio amoung other
things.
 
It is best used by writing an
AUTOEXEC.BAT file which instructs
the system to run it after every
warm and cold boot.

upload
To send information to a destination
outside of the computer originating
from the computer. Uploading usually
requires communications software.
Information may come from other
computers directly or over phone
lines.

user
Someone who uses a computer.

warm boot
The forcing of a computer to jump to
an early stage of operation; such as
when it is first turned on. This may
be required if the computer fails to
respond otherwise or begins to behave
inappropriately.
 
There are two ways to warm boot on the
Portfolio. The preferred way is to
press the Del key while the Ctrl and
Alt keys are simultaneously held down.
The second way is by pressin in on the
reset button with a paperclip on the
bottom of the machine.

WKS file
A file created by the built-in
Spreadsheet application of the
Portfolio. Unless changed by the user,
the Portfolio will assume UNNAMED.WKS
as the full filename.

word processor
A program which is designed to create
letters and other documents. Extremely
high end word processors are known as
desktop publishing programs.
Different word processors may offer
a wide variety of different features.
The Text Editor of the Portfolio is
an excellent example of a basic word
processor.

Worksheet
One of the five built-in applications
of the Portfolio. Also known as a
spreadsheet. See spreadsheet.

write protect
A switch, tab or software setting
which prohibits future altering or
deleting of one or more files which
have already been saved.
 
The write protect switch on Portfolio
RAM memory cards protect all the files
and prohibits any of them to be
changed until the switcvh is placed
off again.

xmodem
A widely accepted protocol to validate
the accuracy of data which is sent
electronically from one computer to
another. An example would be over a
modem and phone lines. The system
allows computers to tell each other
if the data sent is correct and to
retransmit the same data if not.

XOTERIX  (818)888-7390
23106 Baltar St.
West Hills, CA  91304
Mark Henderson
 
Source for a variety of Autobyte
software titles including:
 
Checkwriter ..... $149.99
PBASE ........... $ 99.99
Stocks Games .... $ 79.99
Terminal+ ....... $ 79.99

XTERM.EXE
A program written by Jim Straus and
submitted to the public domain by
special arrangement with Atari. The
program is a communications driver
for modems or direct-to-desktop file
transfers over the serial port. It
may be found on popular on-line
services such as CompuServe or
obtained from a full-service
Portfolio dealer.

128K RAM Memory Card [HPC-203]
An electronic diskette which functions
as a disk drive on the Portfolio. The
capacity is 128K bytes or one megabit.
$169.95

32K RAM Memory Card [HPC-201]
An electronic diskette which functions
as a disk drive on the Portfolio. The
capacity is 32K bytes or 256K bits.
$69.95

64K RAM Memory Card [HPC-202]
An electronic diskette which functions
as a disk drive on the Portfolio. The
capacity is 64K bytes or 512K bits.
$99.95