TTCOMP - Revision history

Dexvertbot: Change telparia.com samples link to template

2023-12-28T05:14:47Z

Change telparia.com samples link to template

Jsummers: /* Identification */

2022-01-28T16:38:02Z

‎Identification

Jsummers at 22:05, 21 July 2021

2021-07-21T22:05:04Z

Jsummers at 14:39, 20 July 2021

2021-07-20T14:39:10Z

Jsummers: Rewrote most of the article

2021-07-20T14:33:19Z

Rewrote most of the article

Jsummers: Jsummers moved page TTComp archive to TTCOMP: Less-bad name

2021-07-20T14:22:50Z

Jsummers moved page TTComp archive to TTCOMP: Less-bad name

J2j: software TTCOMP.EXE and blast added

2021-06-29T18:02:47Z

software TTCOMP.EXE and blast added

Sembiance: /* Sample files */

2021-05-20T22:47:21Z

‎Sample files

Sembiance: /* Sample files */

2020-07-26T20:17:13Z

‎Sample files

Sembiance: /* Sample files */

2020-05-26T14:30:30Z

‎Sample files

@@ Line 27: / Line 27: @@
 * [https://archive.org/details/TYPECASE_ZIP Typecase Demo] → *.TTC
 * [https://archive.org/details/UniversalDialUPModemDriverCD Universal Dial UP Modem Driver CD] → SOFTWARE/BITWARE/.../*.??$
-* https://telparia.com/fileFormatSamples/archive/ttcomp/
+* {{DexvertSamples|archive/ttcomp}}
 [[Category:PKWARE]]

@@ Line 12: / Line 12: @@
 Refer to [[PKWARE DCL Implode#Identification]] for how to identify PKWARE DCL Implode format in general.
-TTCOMP.EXE/COMPR.EXE appears to only ever use binary compression, and a 4K dictionary. TTDECOMP.EXE/DECOMPR.EXE can decompress all six modes. So, you could declare that TTCOMP files always start with bytes {{magic|0x00 0x06}}, or you could account for the other modes as well.
+TTCOMP.EXE/COMPR.EXE appears to only ever use binary compression, and a 4K dictionary. But TTDECOMP.EXE/DECOMPR.EXE can decompress all six modes. So you could decide that ''true'' TTCOMP files always start with bytes {{magic|0x00 0x06}}, or you could account for the other modes as well.
 == Software ==

@@ Line 7: / Line 7: @@
 '''TTCOMP''' is the informal name of a file compression utility developed by SWFTE International. Its compressed file format is just a raw blob of [[PKWARE DCL Implode]]-compressed data. The name "TTCOMP" has sometimes been used (misused?) for any file compressed in such a manner, even if it has nothing to do with the TTCOMP software.
-The TTCOMP software has been passed around in the form of a pair of files named "TTCOMP.EXE" and "TTDECOMP.EXE", though there's no evidence that this is an official distribution. The software is included in SWFTE's ''Typecase'' product, and maybe some other SWFTE products, but the files are named "COMPR.EXE" and "DECOMPR.EXE". Typecase does not appear to ever use the name "TTCOMP", and it's not clear where it came from. Someone may have derived it from the '''.TTC''' filename extension that Typecase uses for compressed [[TrueType]] fonts.
+The software is included in SWFTE's ''Typecase'' product, and maybe some other SWFTE products, as files named "COMPR.EXE" and "DECOMPR.EXE". It may also found by itself, as files named "TTCOMP.EXE" and "TTDECOMP.EXE", though there's no evidence that this is an official distribution. The origin of the name "TTCOMP" is unknown; Typecase does not appear to use it. Someone may have derived it from the '''.TTC''' filename extension that Typecase uses for compressed [[TrueType]] fonts.
 == Identification ==
@@ Line 18: / Line 18: @@
 * [http://www.exelana.com/techie/c/ttdecomp.html TTDecomp]
 * [https://vetusware.com/download/Typecase%202.60/?id=7021 Typecase v2.60 (at Vetusware)] (Windows 3.x software; compression utilities are for DOS)
 See also [[PKWARE DCL Implode#Software]].

@@ Line 3: / Line 3: @@
 |subcat=Compression
 |extensions={{ext|ttc}}, others
 }}
 '''TTCOMP''' is the informal name of a file compression utility developed by SWFTE International. Its compressed file format is just a raw blob of [[PKWARE DCL Implode]]-compressed data. The name "TTCOMP" has sometimes been used (misused?) for any file compressed in such a manner, even if it has nothing to do with the TTCOMP software.
@@ Line 14: / Line 15: @@
 == Software ==
 * [http://www.exelana.com/techie/c/ttdecomp.html TTDecomp]
-* [http://info.elf.stuba.sk/packages/pub/pc/pack/ttcomp.zip TTCOMP.EXE]
+* [https://vetusware.com/download/Typecase%202.60/?id=7021 Typecase v2.60 (at Vetusware)] (Windows 3.x software; compression utilities are for DOS)
-* [https://github.com/JoshVarga/blast blast]
 == Sample files ==
 * [https://archive.org/details/UniversalDialUPModemDriverCD Universal Dial UP Modem Driver CD] → SOFTWARE/BITWARE/.../*.??$
 * https://telparia.com/fileFormatSamples/archive/ttcomp/
 [[Category:PKWARE]]

@@ Line 2: / Line 2: @@
 |formattype=electronic
 |subcat=Compression
 }}
-'''TTComp archive''' is a compressed file format. It was apparently used by some software installation utilities. It uses [[PKWARE DCL Implode]] compression.
+'''TTCOMP''' is the informal name of a file compression utility developed by SWFTE International. Its compressed file format is just a raw blob of [[PKWARE DCL Implode]]-compressed data. The name "TTCOMP" has sometimes been used (misused?) for any file compressed in such a manner, even if it has nothing to do with the TTCOMP software.
-Though it may be called an "archive" format, it appears to store nothing more than a stream of compressed data.
+The TTCOMP software has been passed around in the form of a pair of files named "TTCOMP.EXE" and "TTDECOMP.EXE", though there's no evidence that this is an official distribution. The software is included in SWFTE's ''Typecase'' product, and maybe some other SWFTE products, but the files are named "COMPR.EXE" and "DECOMPR.EXE". Typecase does not appear to ever use the name "TTCOMP", and it's not clear where it came from. Someone may have derived it from the '''.TTC''' filename extension that Typecase uses for compressed [[TrueType]] fonts.
 == Identification ==
-The first byte of a TTComp file indicates the type of compression:
+Refer to [[PKWARE DCL Implode#Identification]] for how to identify PKWARE DCL Implode format in general.
-* <code>0x00</code>: binary compression
-* <code>0x01</code>: ASCII compression
-The second byte of a TTComp file specifies the size of the dictionary as follows:
+TTCOMP.EXE/COMPR.EXE appears to only ever use binary compression, and a 4K dictionary. TTDECOMP.EXE/DECOMPR.EXE can decompress all six modes. So, you could declare that TTCOMP files always start with bytes {{magic|0x00 0x06}}, or you could account for the other modes as well.
-* <code>0x04</code>: 1024 bytes
-* <code>0x05</code>: 2048 bytes
-* <code>0x06</code>: 4096 bytes
-−
-Most TTComp files begin with bytes <code>0x00 0x06</code> indicating binary compression and a 4K dictionary.
 == Software ==
@@ Line 27: / Line 21: @@
 * [https://archive.org/details/UniversalDialUPModemDriverCD Universal Dial UP Modem Driver CD] → SOFTWARE/BITWARE/.../*.??$
 * https://telparia.com/fileFormatSamples/archive/ttcomp/

@@ Line 24: / Line 24: @@
 == Sample files ==
 * [https://archive.org/details/UniversalDialUPModemDriverCD Universal Dial UP Modem Driver CD] → SOFTWARE/BITWARE/.../*.??$
-* https://telparia.com/fileFormatSamples/archive/quickgif.__d
+* https://telparia.com/fileFormatSamples/archive/ttcomp/quickgif.__d

← Older revision		Revision as of 14:30, 26 May 2020
Line 24:		Line 24:
	== Sample files ==		== Sample files ==
	* [https://archive.org/details/UniversalDialUPModemDriverCD Universal Dial UP Modem Driver CD] → SOFTWARE/BITWARE/.../*.??$		* [https://archive.org/details/UniversalDialUPModemDriverCD Universal Dial UP Modem Driver CD] → SOFTWARE/BITWARE/.../*.??$
		+	* https://telparia.com/fileFormatSamples/archive/quickgif.__d