Not able to read Commodore 8032 tape

ThomasHeinrichSchmidt commented 5 years ago

I was not able to read a Commodore 8032 tape cassette. I tried

java -jar cassette-nibbler-0.2.jar -platform=commodore -logging=verbose "SIDE 2.wav"

and also using other platforms like commodore16+4 or c64-turbotape but with no luck. I only got error messages like these:

(1927029442) FRAME ERROR
(1927029442) OPTIONS SPECIFY TO ALLOW CHECKBIT ERRORS, SO WILL TREAT FRAME AS VALID
(1927029442) INVALID SYNC BYTE
(1927029442) OPTIONS SPECIFIED TO ATTEMPT TO RECOVER FILES. ATTEMPTING TO RECOVER THIS BLOCK. 
...

or

(0) INVALID FRAME START. PULSE LENGTHS 0, 113378
(0) UNEXPECTED PULSE IN FRAME
(0) INVALID FRAME START. PULSE LENGTHS 204081, 997733
(0) UNEXPECTED PULSE IN FRAME
(0) INVALID FRAME START. PULSE LENGTHS 90703, 181406
(0) UNEXPECTED PULSE IN FRAME
(0) CHECKBIT ERROR IN FRAME 
...

and nothing was saved. I enclose the WAV file in question (had to split into 10MB chunks "SIDE 2.z0#" , also enclosed the batch to rename them to "SIDE 2-0#.zip" to make GitHub happy. You have to re-rename them, I guess, before beeing able to acces the "SIDE 2.zip"). SIDE 2.zip SIDE 2-01.zip SIDE 2-02.zip SIDE 2-03.zip SIDE 2-04.zip SIDE 2-05.zip SIDE 2-06.zip SIDE 2-07.zip SIDE 2-08.zip SIDE 2-09.zip

tozip.zip

eightbitjim commented 5 years ago

Try using the -invert option. I just tried it and apparently got 3 files out.

ThomasHeinrichSchmidt commented 5 years ago

Wow! That's way better. Yes, I do also expect three files (from the toc I noted on the tape cassette label). And cassette-nibbler also tells me that it is extracting three files:

Progress-----------------------------------------------------------------------
100%: SIDE 2.wav (0 files extracted): SIDE 2.wav
100%: SIDE 2.wav (1 file extracted): SIDE 2.wav
100%: SIDE 2.wav (2 files extracted): SIDE 2.wav
100%: SIDE 2.wav (3 files extracted): SIDE 2.wav
100%: Processed 21 minutes 26 seconds (87.0x realtime) (3 files extracted): Pro

But I do actually receive only two files 3dmess.prg.ROMloader.e1783388.commodore.PRG and "3dmessv 2.0.prg.ROMloader.98108ece.commodore.PRG" . From my notes I expect another file "3dmessv2.0.prg.ROMloader.98108ece.commodore.PRG" (note the missing space before the 2.0). Maybe cassette-nibbler could display the names of the files it's extracting and why some file does not get extracted in the end ... But otherwise great work! I had never expected to get those files back ...

eightbitjim commented 5 years ago

Great, glad that worked. Thank you for the comments-- I'll see what extra information I can get it to display.

I got 3 files out successfully, but one had a colon in the filename. I wonder if this is another difference between Linux and Windows... perhaps the file with the colon in didn't work on your machine. I've uploaded a new version that strips the colons from filenames if they occur. This might be more successful, hopefully.

ThomasHeinrichSchmidt commented 5 years ago

After your change I also receive 3 files as expected, all good, thanks for your excellent work!

eightbitjim / cassette-nibbler

Not able to read Commodore 8032 tape #44