Atari 400 User Manual

Atari 810 Disk Drive 221
of each file on the diskette in drive 1 wi ll be displayed on the
screen followed by the size of the file (in sectors). The last lin e of
the directory listing will contain the number of unused sectors
on the diskette. A sample directory listing is pictured in
Illustration 7-9.
As previously mentioned , pressing Return in response to the
SEARCH SPEC, LIST FILE prompt will cause all fileson the diskette
in drive 1 to be listed. When Return is pressed in response to this
prompt , DOS will assume the default values for the SEARCH
SPEC and LIST FILE parameters.
SEARCH
SPEC indicates the file specification of any specific files
to be listed by the Directory operation. This file specification
consists of the capital l etter D followed by the number of the disk
drive whose diskette is to be searched, followed by the name of
the file or files to be searched for. The drive i dent ifi er and
filename should be separated by a semicolon.
Illustration 7-9. Directory Listing
*DOS
SYS 039
*DUP
SYS
042
DISP
OB] 001
PROGRAM2 BAS 012
PROGRAM3 BAS
013
600 FREE SECTORS

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)