IBM 5150 User Manual

The BASIC Start-up Screen
When BASIC is started, a screen similar to this is
displayed:
The IBM Personal Computer Basic
Version Dl.00 Copyright IBM Corp. 1981
Bytes free
The cursor is here.
The D in this message tells
you that Disk BASIC has been
started. The message may instead show a C for Cassette
BASIC,
or an A for Advanced BASIC.
Instead
of xxxxx, you will see some number that tells
you how much room you have in the computer's r"\
memory for your programs and data.
The BASIC Prompt
Ok is BASIC's prompt. It tells you that BASIC is ready
for
you to tell it what to do. You need to remember to
type BASIC commands and statements after Ok-you
can use DOS commands only when you see A>; not
when you see Ok.
Ok also tells you that the keyboard is operating in
BASIC mode.
Look in "Keyboard Layout and Usage"
for a complete description of what the keys do.
BASIC 3-6

IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5