Atari 400 User Manual

110 User's Handbook to the Atari 400/ 800 Computers
DOS (DO.)
CONFICURATION
DOS
EXAMPLE
DOS
The DOS command is used to display the DOS utilities Menu .
DOS must be present if the DOS command is to be used. If DOS
is not present, the system will be put into the Memo Pad mode .
To return
to BASIC from Memo Pad, press SYSTEM RESET .
When the DOS command is executed, all I/ O channels will be
closed except
channel 0. The display is cleared and the sound
voices are shut off.
Also, the color registers resume their default
values.
The Disk Operating System Menu is a list of 15 di sk functions .
There are two versions of the Disk Operating System, version 1.0
and version 2.0S. The DOS command has a different effect in
each
of the two versions.
In version 1.0, the DOS Menu appears on the display as soon as
DOS is executed.
r DISK OPERATING SYSTEM
COPYRIGHT 1979 ATARI
9/24/79
A. DISK DIRECTORY I. FORMAT DISK
B. RUN CARTRIDGE J. DUPLICATE DISK
C. COPY FILE K. BINARY SAVE
D. DELETE FILE(S) L. BINARY LOAD
E. RENAME FILE M . RUN AT ADDRESS
F. LOCK FILE N. DEFINE DEVICE
G. UNLOCK FILE O. DUPLICATE FILE
'" H. WRITE DOS FILE

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)