[Coco] Recovering a damaged cassette file

[Bill Pierce]

Ok, got it. I got the same results as Mr Gault. 
10-640 ok
650 corrupt
1030-1110 ok
1120 incomeplete, corrupts the rest

Got the same listings he did. At about line 650, it starts to warble, only getting worse till the dropout.

Bill P

Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Bill Pierce
ooogalapasooo at aol.com




-----Original Message-----
From: Robert Gault <robert.gault at att.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Thu, Sep 6, 2012 11:16 am
Subject: Re: [Coco] Recovering a damaged cassette file


Bill Pierce wrote:
>
> Mr Gault, what method did you use? I can get no listing but a loop with 
"printchr$(x);" reveals the code is there. It also looks like I may have a 
little more than you according to what text I see. My wav was heavily processed 
and loads right up to the final error"
>
> Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Bill Pierce
> ooogalapasooo at aol.com
>

I loaded the .aud file into Audacity and then exported it as a .wav file. I then 

used Cool Edit Pro to increase the volume in the 15-16 second section, 
attempting to get a uniform volume.

The resulting wave file was mounted in MESS and eventually CLOADed into Coco3 
emulation. Since there was at least one error present in the file, the CLOAD 
routine was patched to ignore errors.

$A4E3  BNE LA4F8  got an error during read
to
        BRN LA4F8

change $A4E3 to $21

Perhaps "better" treatment of the wav file would generate more lines. The file I 

used had at least several corrupt lines which had to be erased before the 
program could be listed.
Perhaps if the program were/could be saved as is, it could be patched on disk so 

that more of the missing lines could be recovered.


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