Fileformat

Allgemeine Atari 8bit File Extensions und ihre Bedeutung

Ext = Extension (ie, the "TXT" in the filename "LETTER.TXT")
Typ = File type (B = binary, T = text, X = executable (binary),
? = uknown or depends (assume binary))
Desc = Description

Ext Typ Desc.
ACT -T- "Action!" source code file.
APC -B- "APAC" image. (80x96x256 noncompressed).
AP2 -B- "APAC-2" image. (80x192x256 noncompressed).
AR? -X- (AR0 through AR9) An "autorun" file loaded by MyDOS during boot, renamed from "EXE", "COM" or "OBJ."
ARC -B- "ARC" archive. A set of files compressed into one file. Typcial Atari 8-bit compression format.
ASC -T- "ASCII" text file.
ASM -T- Assembly language source code file.
ATA -T- "AtASCII" (Atari ASCII) text file.
ATR -B- An Atari disk image used by Atari computer and disk drive emulators. (Like PC Xformer, Rainbow, Atari800, XL-It!, SIO2PC and APE.)
BAS -B- "Atari BASIC" tokenized source code file. "LOAD" from within BASIC.
BAT -T- "Batch" file - list of commands to be executed by a DOS (ie SpartaDOS).
BLU -T- ".blurb" file (description of another file).
C -T- "C" source code file.
CFG -?- A preferences (configuration) file used by some program
CNF -?- A preferences (configuration) file used by some program
COM -X- Binary executable (a program / application).
CTB -B- Compiled TurboBASIC XL program. Load with TurboBASIC XL "Runtime."
DAT -?- A data file used by some program.
DC3 -B- "Disk Communicator" disk image (disk data saved as a file).
DCM -B- "Disk Communicator" disk image (disk data saved as a file).
DOC -T- Text file (ASCII or ATASCII).
DGS -B- "Degas" image. (??x??x??).
DIG -B- "Parrot" digital audio file.
DSK -B- "Disk Communicator" disk image (disk data saved as a file).
EXE -X- Binary executable (a program / application).
FRM -B- "Frame" animation file.
FON -B- Atari screen font file.
FNT -B- Atari screen font file.
FTH -?- "Forth" source code file.
GIF -B- A "GIF"(tm) graphics file. (??x??x2-256 compressed).
GRA -B- "APAC" image. (80x96x256 noncompressed).
GR7 -B- "Graphics 7" image. (160x96x4 noncompressed).
GR8 -B- "Graphics 8" image. (320x192x2 noncompressed).
GR9 -B- "Graphics 9" image. (80x192x16 noncompressed).
G15 -B- "Graphics 15" image. (160x192x4 noncompressed).
HIP -B- "Hard Interlaced Picture" image. (160x240x30).
HLP -B- Text or other file used as a help file by some program.
ILC -B- "APAC Interlaced" image. (80x192x256 noncompressed).
LHA -B- "LHA" archive. A set of files compressed into one file. Typical Atari ST and Amiga compression format.
LST -T- An Atari BASIC source file. "ENTER" from within BASIC.
M65 -B- "Mac65" tokenized source code file.
NLQ -B- Daisy Dot III "Near Letter Quality" font file.
OBJ -X- Binary executable (a program / application) or an "object" file.
PIC -B- A An image file. Usually "Koala" style (160x192x4 compressed).
PRF -?- A preferences file used by some program
PRO -B- An "APE" disk image which contains copy protection information.
PZM -B- "Pryzm" image. (80x192x256 noncompressed).
QIK -?- "Quick" source code file.
RLE -B- "Run-Length-Encoded" image. (??x??x?? compressed).
SFX -B- Self-Extracting archive. (A program which decompresses itself into a set of smaller programs - you only load this once.)
SND -B- Mac System 7 or NeXT digital audio file.
SYS -B- A system file, usually used by a DOS.
TBS -B- TurboBASIC XL tokenized source code file. "LOAD" from within TurboBASIC XL.
TUR -B- TurboBASIC XL tokenized source code file. "LOAD" from within TurboBASIC XL.
TXT -T- Text file (ASCII or AtASCII).
UUE -T- "UUencoded" binary file (converted to text-only format.)
WAV -B- "WAVE" digital audio file.
XMO -B- ??? Some binary file. (Bad naming convention by CompuServe.)
ZIP -B- "ZIP" archive. A set of files compressed into one file.