Difference between revisions of "File format"

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(initial version of file formats)
 
(Added Windows and Atari ST format (template))
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File extension: .com
 
File extension: .com
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==Windows==
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===EXE===
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System: Windows
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Header: 200+
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Native size unit: Bytes
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Loads to:
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Starts at:
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File extension: .exe
  
 
==Commodore==
 
==Commodore==
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File extension: .p00
 
File extension: .p00
  
==Atari==
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==Atari 8bit==
 
===XEX, EXE, COM===
 
===XEX, EXE, COM===
 
System: Atari
 
System: Atari
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File extension: .exe .com .xex (any ending possible)
 
File extension: .exe .com .xex (any ending possible)
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==Atari ST==
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===TOS===
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System: Atari ST
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Header: 32 Bytes
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Native size unit: ???
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Loads to:
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Starts at: 
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File extension: 
  
 
==Amstrad==
 
==Amstrad==

Revision as of 04:11, 17 January 2022

File formats

File formats describe the content of a file.

This page is not about:

  • File systems which organize files on a partition
  • Disk images which save a (disk) file system within one file
  • Tape file formats, as they have a higher overhead usually

MS-DOS

COM

System: MS-DOS

Header: 0 bytes see here

Native size unit: Bytes

Loads to: 0100h

Starts at:

File extension: .com

Windows

EXE

System: Windows

Header: 200+

Native size unit: Bytes

Loads to:

Starts at:

File extension: .exe

Commodore

PRG

System: CBM-DOS (Commodore, e.g. C64)

Header: 2 bytes (= start address)

Native size unit: Blocks (256 bytes including 2 bytes linking to next block)

Loads to: given address in header

Starts at: given address in header

File extension: .prg

P00

System: CBM-DOS / PC64 Emulator

Header: extended 26 bytes; also includes the name; see here

Native size unit: Blocks

Loads to: given address in header

Starts at: given address in header

File extension: .p00

Atari 8bit

XEX, EXE, COM

System: Atari

Header: 6 bytes or more (FF FF <start address> <end address>); see also here

Native size unit: ???

Loads to: given start address in header

Starts at: given end address in header

File extension: .exe .com .xex (any ending possible)

Atari ST

TOS

System: Atari ST

Header: 32 Bytes

Native size unit: ???

Loads to:

Starts at:

File extension:

Amstrad

BIN

System: AMSDOS (Amstrad CPC)

Header: 128 bytes (includes filename, start address, end address, etc.; 95 unused bytes; see also AMSDOS-Header

Native size unit: kb

Loads to: given start address in header

Starts at: given end address in header

File extension: .bin (on PC)

Spectrum

Binary

System: ZX Spectrum

Header: none

Native size unit: ???

Loads to: special loader required; usually a BASIC program

Starts at: see above

File extension: ??? usually delivered within a disk image (.trd)