ASCOM - Revision history

Sembiance: /* Software */

2025-04-17T13:47:07Z

‎Software

Sembiance: /* Sample files */

2025-04-17T13:46:55Z

‎Sample files

Jsummers at 16:14, 1 March 2025

2025-03-01T16:14:49Z

MihaiPopa7 at 05:33, 11 February 2025

2025-02-11T05:33:36Z

MihaiPopa7 at 06:33, 10 February 2025

2025-02-10T06:33:29Z

Jsummers at 17:29, 9 February 2025

2025-02-09T17:29:15Z

Jsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Executable envelopes |extensions={{ext|com}} |released=≤1995 }} :''Not to be confused with Asc2Com.'' '''ASCOM''' is a DOS u..."

2025-02-08T16:58:37Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Executable envelopes |extensions={{ext|com}} |released=≤1995 }} :''Not to be confused with Asc2Com.'' '''ASCOM''' is a DOS u..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Executable envelopes
|extensions={{ext|com}}
|released=≤1995
}}
:''Not to be confused with [[Asc2Com]].''

'''ASCOM''' is a DOS utility that converts a text file to a [[DOS executable (.com)|COM]] file that, when executed, displays the text in a viewer. It was developed by Kevin Tseng.

== Format details ==
The embedded text is encrypted or compressed in some way.

== Identification ==
''(TODO)''

== Software ==
* {{CdTextfiles|cleanhpvac/ASCOM10F.ARJ|ASCOM v1.0f}}

@@ Line 23: / Line 23: @@
 == Software ==
 * {{CdTextfiles|cleanhpvac/ASCOM10F.ARJ|ASCOM v1.0f}} (The main program, ASCOM.COM, is converted using some sort of new [[com2txt]] version)
 == Sample files ==
 * [https://archive.org/details/aolfile-7500 AOL File Library - 7500 to 7599] → 7500/Teens_ Serious Files/BATCHCOM_ Batch File Development/DSPBCV1S.zip → README.COM
 * {{DexvertSamples|document/ascom}}

← Older revision		Revision as of 13:46, 17 April 2025
Line 26:		Line 26:
	== Sample files ==		== Sample files ==
	* [https://archive.org/details/aolfile-7500 AOL File Library - 7500 to 7599] → 7500/Teens_ Serious Files/BATCHCOM_ Batch File Development/DSPBCV1S.zip → README.COM		* [https://archive.org/details/aolfile-7500 AOL File Library - 7500 to 7599] → 7500/Teens_ Serious Files/BATCHCOM_ Batch File Development/DSPBCV1S.zip → README.COM
		+	* {{DexvertSamples\|document/ascom}}

@@ Line 19: / Line 19: @@
 == Identification ==
-''(TODO)''
+For v1.0f: The first few thousand bytes of a generated file are apparently always the same, except for two bytes starting at offset 48. The first 16 are {{magic|e9 00 00 e8 00 00 8b fc 36 8b 2d 83 c4 02 81 ed}}.
 == Software ==
-* {{CdTextfiles|cleanhpvac/ASCOM10F.ARJ|ASCOM v1.0f}} (The main program, ASCOM.COM is converted using some sort of new [[com2txt]] version)
+* {{CdTextfiles|cleanhpvac/ASCOM10F.ARJ|ASCOM v1.0f}} (The main program, ASCOM.COM, is converted using some sort of new [[com2txt]] version)

← Older revision		Revision as of 05:33, 11 February 2025
Line 10:		Line 10:

	See also [[XDOC (JauMing Tseng)\|XDOC]], a similar utility by the same author.		See also [[XDOC (JauMing Tseng)\|XDOC]], a similar utility by the same author.
		+
		+	The original document can be recovered by running the COM file in a DOS environment, and pressing "W" to "write" to a file.
		+
		+	The original document can be printed by running the COM file in a DOS environment, and pressing "W", then typing "PRN".

	== Format details ==		== Format details ==

← Older revision		Revision as of 06:33, 10 February 2025
Line 18:		Line 18:

	== Software ==		== Software ==
−	* {{CdTextfiles\|cleanhpvac/ASCOM10F.ARJ\|ASCOM v1.0f}}	+	* {{CdTextfiles\|cleanhpvac/ASCOM10F.ARJ\|ASCOM v1.0f}} (The main program, ASCOM.COM is converted using some sort of new [[com2txt]] version)

@@ Line 8: / Line 8: @@
 '''ASCOM''' is a DOS utility that converts a text file to a [[DOS executable (.com)|COM]] file that, when executed, displays the text in a viewer. It was developed by Kevin Tseng.
 == Format details ==
-The embedded text is encrypted or compressed in some way.
+Except in early versions, the embedded text is obfuscated. For v1.0f at least, each byte is XORed with 0x01.
 == Identification ==