(c)1990 Golden Triangle, Inc. (c)1990 Wilson Van Alst All rights reserved. Fm: Michael Mayers To: ALL I'm having a couple of problems with my WP-2. I wonder if anyone has a solution. I recorded over the first part of a file on a cassette recorder. Is it possible to recover the remaining part of the file? - 0 - Fm: Stan Wong To: Michael Mayers I am unaware of any technique to recover the last part of a file that's been recorded over unless you can load the preceeding file and the remaining part of the file gets sucked in. If you have a M100 then using some direct programming techniques it might be possible. There are several gentlemen here who might very well have some advice on that topic (Wilson Van Alst and James Yi). - 0 - Fm: Wilson Van Alst To: Stan Wong Partly out of curiosity, and partly because I'm trying to help Michael Mayers get his file-tail back, I wonder if you're able to confirm whether an M100 will read WP-2 cassette files? (I kinda have my doubts, but if you have the gear, maybe you could check....) - 0 - Fm: Stan Wong To: Wilson Van Alst I will check for you. First off, the WP-2 allows for eight character filenames but only the first six get saved to tape. Of course this info will go into the BEWARE.WP2 file. Aside from formatting info I don't see why the M100 shouldn't be able to read WP-2 tapes. Get back to you tomorrow. - 0 - Fm: Wilson Van Alst To: Stan Wong That 8-letter file name is one of the things that gave me doubts about compatibility. Knowing that the WP-2 cuts the names to six letters, a la M100/T200, offers a glimmer of hope. But there are a few other variables in the cassette storage equation: sync pulse configuration, frequencies used for high/low bits, checksum algorithms, even the type of modulation (full-wave vs. modified Manchester, for example). I had to deal with all these things when I wrote a program to read professional videotape time code, and it wasn't easy. Looking forward to your test... - 0 - Fm: Wilson Van Alst To: Michael Mayers I don't have a WP-2; so I'm shooting in the dark here to some extent. You can try a technique described in the Lib 9 file, RECOVR.CAS. If that doesn't work, your chances of recovering the file, using "known" techniques, would seem to depend on two things: 1) access to a M100/102 or T200 computer, and 2) "compatibility" between those machines and the WP-2's cassette storage methods (they could be vastly different, since there is no "standard" for such things as modulation frequencies, synchronization pulses, or the size of data blocks). So: do you have, or can you get your hands on, one of the other computers? If so, and if you can confirm that it will read WP-2 cassette files, James Yi's program CASUTL.100 (or .200), may get your file back. Let me know how it's going. - 0 - Fm: Michael Mayers To: Wilson Van Alst It turns out that A little fooling around on my part turned up a way to recover thepesky file. I simply loaded the preceeding file from the cassette and turned down the volume as the end of the file came by, so the WP-2 never got the endmessage and went right on in to my lost file. Try that with your hard disk. - 0 - Fm: Wilson Van Alst To: Michael Mayers Nice work! As I recall, that's the technique outlined in the RECOVR file for the M100. And I used to have a hard disk that would do that all on its own. - 0 - Fm: Stan Wong To: Wilson Van Alst I successfully transferred files from the WP-2 to the M100 via cassette tape. I tried both the formatted .DO files and the ascii .DA file form. The converted ascii .DA is read by the M100 byte for byte as it is stored in the WP-2. No problems. The WP-2 formatted .DO files are transferred with a (approximately) 64 byte binary header. Otherwise the rest of the file is just plain ascii text. One caution though, I did not have any embedded formatting commands, such as line centering or underlining, in the document. I would expect that in that case there would be some control characters interspersed throughout the document. These are easily editted out using M100 TEXT. The bottom line is that it is possible to recover a damaged WP-2 tape using M100 utilities. - 0 - Fm: Wilson Van Alst To: Stan Wong Stan, That's interesting. It means that James Yi's CASUTL program should work to recover partially trashed WP-2 tapes -- if the WP-2 owner can get his/her hands on an M100 or T200. Thanks. - 0 - Starting message #: 190817 Starting date: 28-Nov-89 23:22:24 Participants: Michael Mayers 73557,1331 Stan Wong 70346,1267 Wilson Van Alst 76576,2735