ARX - Revision history

Dexvertbot: Change telparia.com samples link to template

2023-12-28T02:55:19Z

Change telparia.com samples link to template

Jsummers at 14:02, 19 October 2023

2023-10-19T14:02:29Z

Sembiance: Added sample files

2023-10-17T14:37:07Z

Added sample files

Jsummers: /* Software */

2021-07-27T17:06:33Z

‎Software

Jsummers: /* Identification */

2020-08-15T20:36:13Z

‎Identification

Jsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions={{ext|arx}} |released=1994 }} '''ARX''' is a compressed archive utility for DOS, and associated file format. ..."

2020-08-15T11:36:38Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions={{ext|arx}} |released=1994 }} '''ARX''' is a compressed archive utility for DOS, and associated file format. ..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Archiving
|extensions={{ext|arx}}
|released=1994
}}
'''ARX''' is a compressed archive utility for DOS, and associated file format. It was developed by Michael Kosior, and released as shareware.

== Format details ==
ARX appears to be derived from [[LHA|LHarc]] circa v1.13. Its header format is not quite compatible with LHarc/LHA format. Its compressed data format appears to be the same. It's unclear if it's supposed to have any benefits (e.g. speed) over LHarc.

== Identification ==
More research may be needed, but ARX can probably be reliably distinguished from [[LHA#Identification|LHA]].

ASCII "{{magic|-lh1-}}" appears at offset 2. (One might expect to see "lh0" instead of "lh1" if the first member file was not compressible, but ARX v1.0 seems to always use "lh1", possibly due to a bug.)

The byte at offset 21 has value {{magic|0x00}}. This normally won't happen with LHA header level 0 or 1, because that's the filename length field.

== Software ==
* [https://www.sac.sk/download/pack/arx100.zip ARX v1.0]

← Older revision		Revision as of 02:55, 28 December 2023
Line 27:		Line 27:

	== Sample files ==		== Sample files ==
−	* ~~https://telparia.com/fileFormatSamples/~~archive/arx/	+	* {{DexvertSamples\|archive/arx}}

← Older revision		Revision as of 14:37, 17 October 2023
Line 20:		Line 20:
	* [{{SACFTPURL\|pack\|arx100.zip}} ARX v1.0]		* [{{SACFTPURL\|pack\|arx100.zip}} ARX v1.0]
	* {{Deark}} - Can convert to [[LHA]]		* {{Deark}} - Can convert to [[LHA]]
		+
		+	== Sample files ==
		+	* https://telparia.com/fileFormatSamples/archive/arx/

← Older revision		Revision as of 17:06, 27 July 2021
Line 18:		Line 18:

	== Software ==		== Software ==
−	* [~~https://www.sac.sk/download/~~pack/arx100.zip ARX v1.0]	+	* [{{SACFTPURL\|pack\|arx100.zip}} ARX v1.0]
		+	* {{Deark}} - Can convert to [[LHA]]

@@ Line 6: / Line 6: @@
 }}
 '''ARX''' is a compressed archive utility for DOS, and associated file format. It was developed by Michael Kosior, and released as shareware.
 == Format details ==
-ARX appears to be derived from [[LHA|LHarc]] circa v1.13. Its header format is not quite compatible with LHarc/LHA format. Its compressed data format appears to be the same. It's unclear if it's supposed to have any benefits (e.g. speed) over LHarc.
+ARX appears to be derived from [[LHA|LHarc]] circa v1.13. Its header format is not quite compatible with LHarc/LHA format. Its compressed data format appears to be the same.
 == Identification ==

@@ Line 11: / Line 11: @@
 == Identification ==
-More research may be needed, but ARX can probably be reliably distinguished from [[LHA#Identification|LHA]].
+ARX probably ''can'' be reliably distinguished from [[LHA#Identification|LHA]], but more research is needed.
 ASCII "{{magic|-lh1-}}" appears at offset 2. (One might expect to see "lh0" instead of "lh1" if the first member file was not compressible, but ARX v1.0 seems to always use "lh1", possibly due to a bug.)