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HISTORY.NTS
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1992-01-02
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105 lines
7PLUS History:
==============
:
:
:
v1.4:
-----
Finally 7PLUS runs on AMIGA as well (correcting wouldn't work).
Compatibility to systems with filename structures different to
MS_DOS/ATARI added.
-J, -P and -T option added.
Several minor bug-fixes.
v1.41/1.43:
-----------
Bug in -J option fixed.
When prompted for new filename, ENTER would not break. Fixed.
v1.5:
-----
Compatibility to UNIX-based systems.
When decoding and a COR-file is already present, 7PLUS will do
the correction first.
-J option can now do multiple joining.
-X can now extract selected files.
-N option added (Atari_St only).
-Y option added for automated surroundings.
-# option for use of 7PLUS in BBS file servers.
Minichecksum added to headers.
Checksum added to ERR- and COR-files.
Length of original file added to ERR- and COR-files to insure, only
the correct original file is used for compiling COR-Files.
Manuals given a good workover. Detailed chapters about up- and down-
loading added to help newcomers.
Changes in headers a/s/o are still compatible with older versions
and vice versa.
Bugs fixed, that were present since v1.0, but never detected:
-------------------------------------------------------------
1st bug:
--------
When encoding a file using the -S option, 7PLUS would fail when
the encoded file was shorter then the number of lines specified.
Example:
TEST.TXT is 1024 bytes long which will result in 17 code
lines. If encoded with '-S 40', 7PLUS wouldn't decode it,
because it found lines 18 through 40 missing...
2nd bug:
--------
When splitting a file whose length can be devided through 62 without
a rest, 7PLUS would leave the last part empty, when the number of re-
sulting lines could be devided evenly through the number of parts.
Example:
TEST.TXT is 3100 bytes long. If encoded into 2 equal parts
using '-SP 2', 7plus would leave the second part empty,
containing only the header and the foot line.
These bugs manifested themselves only in rare cases, but versions
prior to v1.5 should be replaced by the v1.5 anyway.
v1.6:
-----
Added rebuild.c. Now one-byte errors are automatically corrected. For
this, an additional 15bit-checksum was added to the header and each
code line.
Due to the additional checksum, v1.6 files can only be decoded with
version 1.4 and higher. V1.3 and lower will report all lines damaged!
Found minor bugs in stripping normal CRC to 14 Bit '&0x1fff' instead of
'&0x3fff' .... embarassing...
Also, minichecksum took wrong offset to header, so CRC was not calcula-
ted.
v1.61:
------
Optimized rebuild.c for speed. Now runs 40% faster. Also, a message is
output, telling which line has been rebuilt.
v1.62:
------
Had to make some changes in the handling of extended filenames on
AMIGA and UNIX. The changes are unfortunately not compatible to
previous versions, sorry...
A bit of cosmetics done on 'rebuild'-outputs.
v1.63:
------
Due to a bug inserted by DL4ZBH, where there was none, v1.63 was neces-
sary to be able to redistribute the AMIGA-version. However it's identical
with the v1.62...
Remember: Nobody's perfect and Murphy never sleeps...
73s, Axel. DG1BBQ @DB0CL.DEU.EU