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- 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...
-
- v1.70:
- ------
- test_file() now asks for 'yes', 'no' and 'always'. This is practical,
- when reencoding a file without manually erasing the encoded files
- created earlier.
-
- Rebuilding of header did not work when a space character was missing.
- The space charachter is not part of the 7PLUS-code, so rebuild() never
- tried to put it in the header... fixed.
-
- When decoding, the output-file is not closed after each decoded part
- and re-opened before the next part. This save quite some time, because
- the write buffer does not need to be flushed as often as before.
-
- v2.00:
- ------
- 7PLUS now works with metafiles. This increases the speed of executing
- COR-files extremely.
-
- Splitting of CORs.
-
- Multiple COR-handling.
-
- extract() now also extracts info files that accompany 7PLUS-files.
- In the UK there is a strange BBS that keeps stripping the first
- space of the 7PLUS file headers. extract will now automatically
- add the missing space character.
-
- 7PLUS-files can now also be used as COR-files (-C).
-
- Recreating ERRs from metas.
-
- 7PLUS can clean up behind itself now (-K).
-
- Adding of head- and foot-text to 7PLUS-files (-TP).
-
- Timestamp of original file is kept.
-
- Pepped up some of the screen-outputs.
-
- When joining error reports, 7PLUS will not stop if one ERR-file is
- missing in line. Same goes for CORs.
-
- And lot's of minor stuff...
-
- v2.01:
- ------
- Found a slight bug in join(). It kept on looking for the next ERR in
- line, even if there were no more. This meant, that after execution
- of join, there was a delay of abt 10 seconds.
-
- DL1XAO @DB0AGM.DEU.EU (920622)
- {
- Due to some differences in the behaviour of scanf() on the Atari,
- the statements '%X' had to be changed to '%lX'.
-
- Quick-extract: Files that have the extension '.x' will automatically
- be run through the 7PLUS extractor when doubleclicked on.
- /* This will also work when compiled on other systems! (Axel) */
-
- Modifying filelengths is not supported by TOS, therefore, an index file
- (*.7ix) will be created along with every meta file.
-
- When prompted for new filename, ENTER wouldn't break. We had that one
- before, didn't we?? :-)
- }
-
- Because of the handling of the metafiles, 7PLUS requires abt 24K of
- room on the stack to run properly! Forgot to mention this with the
- v2.00... sri
-
- v2.02:
- ------
- Please! Don't hit me!
- I hope, this would not happen, but it did...
-
-
- Thanks to Uli DF7SC, two bugs have been found in the V2.00 and v2.01:
-
- Bug 1: decode()
-
- If the line before the last line in the last file was corrupted, the
- last line was always written with a length of 62 bytes. Fixed.
-
- Bug 2: correct() (only occures on systems that do not use chsize())
- If the last line of the last file was missing, sometimes chsize()
- didn't work. chsize() would act as if it DID change the filessize,
- and did not report an error, even if it failed. This bug may only be
- true with Borland's compilers.. Fixed.
-
- v2.03:
- ------
- Another bug related to the last line of a file (reported by DF7SC,
- unfortunately he forgot to report it the first time :-<)
-
- This bug is present since version 1.60.
-
- decode()
-
- If the last line of a file is corrupted in a way that it still has
- the right length and more than one character is incorrect, the line
- would not be reported as corrupt.
- If it was the last line of the last file, the metafile had an incorrect
- length and 7PLUS reported 'Decoded file has wrong length..'.
- Fixed.
-
- Requirements on stack space are back to normal. The struct m_index is
- now allocated space on the heap, rather than on the stack.
-
- v2.04:
- ------
- Oh, I hate getch() and getc()!
- If prompted for overwrite twice, answering 'n' the second time, the
- extraction is terminated.. Added a fflush() to make sure, the keyboard
- buffer is empty.
- On the AMIGA, the input routine has been completely changed.
-
- Hans, DD3IF, managed to add set_filetime() for the AMIGA. Now, 7PLUS
- will also read and set timestamps correctly on an AMIGA system.
-
-
- Remember: Pobody's nerfect and Murphy never sleeps...
-
- 73s, Axel. DG1BBQ @DB0CL.DEU.EU
-