C2t
From Just Solve the File Format Problem
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| − | '''c2t''' is collection of two DOS utilities, '''c2t1''' and '''c2t2''', developed by Jørgen Ibsen (a.k.a. Jibz). Each converts a [[DOS executable (.com)|COM file]] to one whose bytes all belong to certain set of [[ASCII]] characters, and which still | + | '''c2t''' is collection of two DOS utilities, '''c2t1''' and '''c2t2''', developed by Jørgen Ibsen (a.k.a. Jibz). Each converts a [[DOS executable (.com)|COM file]] to one whose bytes all belong to a certain set of [[ASCII]] characters, and which still has the same functionality. c2t1 has a smaller decoder, while c2t2 usually produces smaller files. |
| − | See [[ | + | See [[Executable envelopes#Transfer-encoded executables]] for some similar utilities. |
== Identification == | == Identification == | ||
Revision as of 18:01, 28 October 2021
c2t is collection of two DOS utilities, c2t1 and c2t2, developed by Jørgen Ibsen (a.k.a. Jibz). Each converts a COM file to one whose bytes all belong to a certain set of ASCII characters, and which still has the same functionality. c2t1 has a smaller decoder, while c2t2 usually produces smaller files.
See Executable envelopes#Transfer-encoded executables for some similar utilities.
Identification
c2t1-encoded files always start with the same 58 bytes, which can be found in the source code. The first 16 are ASCII "X502503P_5:S)E8,".
c2t2-encoded files always start with the same 112 bytes, which can be found in the source code. The first 16 are ASCII "X502503P_5:P)En-".
Software
- c2t.zip - DOS binaries + assembly language source code
- GitHub project
