Talk:TINYPROG
Further header details
I Tinyprog'd some executables using all known versions. Indeed, there's always "tz" at offset 28 followed by hexadecimal C1 in the "6/8/90" versions and C3 in versions 3.0 through 3.9. Capitalized "TZ" is also present at offset 40 in all versions.
I was curious about how the two "6/8/90" versions differ. The timestamp on TINYPROG.EXE is 1990-06-16 in TINYPROG.ARJ and 1990-06-20 in la022.zip. The two executables are different and produce different output files from the same input file. Comparing each version in a hex editor, I noticed that TINYPROG.EXE always has a 5-digit string at offset 81, as follows:
| Version "6/8/90" - variant 1 | 00003 |
| Version "6/8/90" - variant 2 | 00006 |
| v3.0 | 00008 |
| v3.3 | 00010 |
| v3.5 | 00012 |
| v3.6 | 00013 |
| v3.8 | 00015 |
| v3.9 | 00018 |
Since they're sequential, it may represent an internal build number. Based on this, I would say that "variant 2" is not just a variant, but an update. There was probably a TINYPROG.EXE that was created on 1990-06-08 that had '00000' or '00001' at offset 81, and "variant 1" and "variant 2" were compiled on 6/12 and 6/16, respectively, despite the program still displaying "6/8/90".
