LHA/LHarc self-extracting archive - Revision history

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Jsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions=special |released=≤1989 }} '''LHA/LHarc self-extracting archive''' refers to the various self-extracting ar..."

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Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions=special |released=≤1989 }} '''LHA/LHarc self-extracting archive''' refers to the various self-extracting ar..."

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{{FormatInfo
|formattype=electronic
|subcat=Archiving
|extensions=special
|released=≤1989
}}
'''LHA/LHarc self-extracting archive''' refers to the various self-extracting archive formats associated with the [[LHA|LHarc/LHA]] family of compressed archive utilities.

Refer to [[LHA]] for information about the underlying archive format.

This article primarily covers files for the DOS platform. (TODO: Other platforms.)

Note that some relatives of LHA, such as [[LArc]] and [[PMA]], have self-extracting archive formats that are not covered here.

== Discussion ==
The usual manner of creating a self-extracting archive is to first create a normal (.LZH/.LHA) archive, then run the software on that non-executable archive using the "<code>s</code>" function.

LHarc v1.x can create archives in either [[DOS executable (.com)|COM]] or [[MS-DOS EXE|EXE]] format. LHA v2.x only supports EXE format.

Most versions can create EXE files structured in two different ways: "Small" mode (the default), or "Large" mode. Large mode is enabled by using the <code>/x</code> option.

== Identification ==
LHarc/LHA self-extracting archives contain a text message that will be printed when the files are extracted, which could be useful for format identification. Unfortunately, the message is not consistently located or formatted.

An example of such a message is "<code>LHarc's SFX 1.13S (c) Yoshi, 1989</code>". It contains a version number (which may only be approximate), and usually an "S" or "L" suffix indicating Small or Large mode.

The following table summarizes most of the DOS formats.

{| class="wikitable"
! Exec. format !! Versions !! Mode !! Offset !! Message begins...
|-
|DOS COM || 1.00 || || 6 || "<code>SFX of LHarc</code>"
|-
|DOS COM || 1.12-1.13 || || 6 || "<code>LHarc's SFX</code>"
|-
|DOS COM || 1.14β || || 6 || "<code>LHARC SFX</code>"
|-
|DOS EXE || 1.00 || || 38 || "<code>SFX of LHarc</code>"
|-
|DOS EXE || 1.12-1.13 || S || 38 || "<code>LHarc's SFX</code>"
|-
|DOS EXE || 1.14β || S || 38 || "<code>LHARC SFX</code>"
|-
|DOS EXE || 1.12-1.13 || L || 37 || "<code>LHarc's SFX</code>"
|-
|DOS EXE || 1.14β || L || 37 || "<code>LHARC SFX</code>"
|-
|DOS EXE || 2.05 || S or L || 36 || "<code>LH's SFX</code>"
|-
|DOS EXE || 2.06 || S or L || 36 || "<code>LHa's SFX</code>"
|-
|DOS EXE || 2.11-2.66 || S or L || 36 || "<code>LHA's SFX</code>"
|}

Additionally, DOS COM files start with byte {{magic|0xeb}}.

== Software ==
Refer to [[LHA#Software]], especially the main LHarc/LHA software.

@@ Line 67: / Line 67: @@
 |LHa 2.05          || DOS EXE || S or L || 36  || "<code>LH's SFX</code>"
 |-
-|LHa/LHA 2.06-2.10 || DOS EXE || S or L || 36  || "<code>LHa's SFX</code>"
+|LHa/LHA 2.05b-2.10 || DOS EXE || S or L || 36  || "<code>LHa's SFX</code>"
 |-
-|LHA 2.11-2.66     || DOS EXE || S or L || 36  || "<code>LHA's SFX</code>"
+|LHA 2.11-2.66,<br>LHA32 2.67.00 || DOS EXE || S or L || 36  || "<code>LHA's SFX</code>"
 |}
 == Software ==
 Refer to [[LHA#Software]], especially the main LHarc/LHA software.

@@ Line 53: / Line 53: @@
 |DOS EXE || L || 37
 |-
-|rowspan="3"|LHice || DOS COM ||  || 6 ||rowspan="3"| "<code>LHice's SFX</code>" ||rowspan="3"| [[LHice]] is fake, but it exists.
+|rowspan="3"|LHice || DOS COM ||  || 6 ||rowspan="3"| "<code>LHice's SFX</code>" ||rowspan="3"| [[LHice]] is illegitimate, but it exists.
 |-
 |DOS EXE || S || 38
@@ Line 59: / Line 59: @@
 |DOS EXE || L || 37
 |-
-|rowspan="3"|LHARC 1.14β || DOS COM ||  || 6 ||rowspan="3"| "<code>LHARC SFX</code>" ||rowspan="3"| LHARC 1.14β is probably fake, but it exists.
+|rowspan="3"|LHARC 1.14β || DOS COM ||  || 6 ||rowspan="3"| "<code>LHARC SFX</code>" ||rowspan="3"| LHARC 1.14β is illegitimate, but it exists.
 |-
 |DOS EXE || S || 38

@@ Line 41: / Line 41: @@
 {| class="wikitable"
-! Software !! Exec. format !! Versions !! Model !! Offset !! Message begins... !! Remarks
+! Software !! Exec. format !! Model !! Offset !! Message begins... !! Remarks
 |-
-|LHarc   || DOS COM    || 1.00      ||        || 6   || "<code>SFX of LHarc</code>"
+|rowspan="2"|LHarc 1.00 || DOS COM ||  || 6 ||rowspan="2"| "<code>SFX of LHarc</code>"
 |-
-|LHarc   || DOS COM    || 1.12-1.13 ||        || 6   || "<code>LHarc's SFX</code>"
+|DOS EXE ||   || 38
 |-
-|LHice   || DOS COM    || 1.14      ||        || 6   || "<code>LHice's SFX</code>" || [[LHice]] is fake, but it exists.
+|rowspan="3"|LHarc 1.12-1.13d || DOS COM ||  || 6 ||rowspan="3"| "<code>LHarc's SFX</code>"
 |-
-|LHARC   || DOS COM    || 1.14β     ||        || 6   || "<code>LHARC SFX</code>" || LHARC 1.14β is probably fake, but it exists.
+|DOS EXE || S || 38
 |-
-|LHarc   || DOS EXE    || 1.00      ||        || 38  || "<code>SFX of LHarc</code>"
+|DOS EXE || L || 37
 |-
-|LHarc   || DOS EXE    || 1.12-1.13 || S      || 38  || "<code>LHarc's SFX</code>"
+|rowspan="3"|LHice || DOS COM ||  || 6 ||rowspan="3"| "<code>LHice's SFX</code>" ||rowspan="3"| [[LHice]] is fake, but it exists.
 |-
-|LHice   || DOS EXE    || 1.14      || S      || 38  || "<code>LHice's SFX</code>"
+|DOS EXE || S || 38
 |-
-|LHARC   || DOS EXE    || 1.14β     || S      || 38  || "<code>LHARC SFX</code>"
+|DOS EXE || L || 37
 |-
-|LHarc   || DOS EXE    || 1.12-1.13 || L      || 37  || "<code>LHarc's SFX</code>"
+|rowspan="3"|LHARC 1.14β || DOS COM ||  || 6 ||rowspan="3"| "<code>LHARC SFX</code>" ||rowspan="3"| LHARC 1.14β is probably fake, but it exists.
 |-
-|LHice   || DOS EXE    || 1.14      || L      || 37  || "<code>LHice's SFX</code>"
+|DOS EXE || S || 38
 |-
-|LHARC   || DOS EXE    || 1.14β     || L      || 37  || "<code>LHARC SFX</code>"
+|DOS EXE || L || 37
 |-
-|LHa     || DOS EXE    || 2.05      || S or L || 36  || "<code>LH's SFX</code>"
+|LHa 2.05          || DOS EXE || S or L || 36  || "<code>LH's SFX</code>"
 |-
-|LHa/LHA || DOS EXE    || 2.06-2.10 || S or L || 36  || "<code>LHa's SFX</code>"
+|LHa/LHA 2.06-2.10 || DOS EXE || S or L || 36  || "<code>LHa's SFX</code>"
 |-
-|LHA     || DOS EXE    || 2.11-2.66 || S or L || 36  || "<code>LHA's SFX</code>"
+|LHA 2.11-2.66     || DOS EXE || S or L || 36  || "<code>LHA's SFX</code>"
 |}
 == Software ==
 Refer to [[LHA#Software]], especially the main LHarc/LHA software.

@@ Line 41: / Line 41: @@
 {| class="wikitable"
-! Exec. format !! Versions !! Model !! Offset !! Message begins...
+! Software !! Exec. format !! Versions !! Model !! Offset !! Message begins... !! Remarks
 |-
-|DOS COM    || 1.00      ||        || 6   || "<code>SFX of LHarc</code>"
+|LHarc   || DOS COM    || 1.00      ||        || 6   || "<code>SFX of LHarc</code>"
 |-
-|DOS COM    || 1.12-1.13 ||        || 6   || "<code>LHarc's SFX</code>"
+|LHarc   || DOS COM    || 1.12-1.13 ||        || 6   || "<code>LHarc's SFX</code>"
 |-
-|DOS COM    || 1.14β     ||        || 6   || "<code>LHARC SFX</code>"
+|LHice   || DOS COM    || 1.14      ||        || 6   || "<code>LHice's SFX</code>" || [[LHice]] is fake, but it exists.
 |-
-|DOS EXE    || 1.00      ||        || 38  || "<code>SFX of LHarc</code>"
+|LHARC   || DOS COM    || 1.14β     ||        || 6   || "<code>LHARC SFX</code>" || LHARC 1.14β is probably fake, but it exists.
 |-
-|DOS EXE    || 1.12-1.13 || S      || 38  || "<code>LHarc's SFX</code>"
+|LHarc   || DOS EXE    || 1.00      ||        || 38  || "<code>SFX of LHarc</code>"
 |-
-|DOS EXE    || 1.14β     || S      || 38  || "<code>LHARC SFX</code>"
+|LHarc   || DOS EXE    || 1.12-1.13 || S      || 38  || "<code>LHarc's SFX</code>"
 |-
-|DOS EXE    || 1.12-1.13 || L      || 37  || "<code>LHarc's SFX</code>"
+|LHice   || DOS EXE    || 1.14      || S      || 38  || "<code>LHice's SFX</code>"
 |-
-|DOS EXE    || 1.14β     || L      || 37  || "<code>LHARC SFX</code>"
+|LHARC   || DOS EXE    || 1.14β     || S      || 38  || "<code>LHARC SFX</code>"
 |-
-|DOS EXE    || 2.05      || S or L || 36  || "<code>LH's SFX</code>"
+|LHarc   || DOS EXE    || 1.12-1.13 || L      || 37  || "<code>LHarc's SFX</code>"
 |-
-|DOS EXE    || 2.06-2.10 || S or L || 36  || "<code>LHa's SFX</code>"
+|LHice   || DOS EXE    || 1.14      || L      || 37  || "<code>LHice's SFX</code>"
 |-
-|DOS EXE    || 2.11-2.66 || S or L || 36  || "<code>LHA's SFX</code>"
+|LHARC   || DOS EXE    || 1.14β     || L      || 37  || "<code>LHARC SFX</code>"
 |}
 == Software ==
 Refer to [[LHA#Software]], especially the main LHarc/LHA software.

@@ Line 13: / Line 13: @@
 Note that some relatives of LHA, such as [[LArc]] and [[PMA]], have self-extracting archive formats that are not covered here.
 The usual manner of creating a self-extracting archive is to first create a normal (.LZH/.LHA) archive, then run the software on that non-executable archive using the "<code>s</code>" function.
 LHarc v1.x can create archives in either [[DOS executable (.com)|COM]] or [[MS-DOS EXE|EXE]] format. LHA v2.x only supports EXE format.
 Starting with v1.12, EXE files can be structured in two different ways: "Small model" (the default), or "Large model". Large model is selected by using the <code>/x</code> (v1.x) or <code>/x1</code> (v2.x) option.
 == Identification ==
@@ Line 52: / Line 65: @@
 |DOS EXE    || 2.11-2.66 || S or L || 36  || "<code>LHA's SFX</code>"
 |}
 == Software ==
 Refer to [[LHA#Software]], especially the main LHarc/LHA software.