[Coco] Rainbow on Tape/Disk

Michael Wayne Harwood michael at musicheadproductions.org
Tue Jun 14 11:52:02 EDT 2005

Excellent suggestions!  Thanks! I will add those columns to my spreadsheet

As far as what will be included with the .dsk/.cas files I have ruled out
.wav files, but have thought about contacting Jeff V. and asking him if I
could get permission to include his .cas to .wav utility with the ROD
project...  What do you think?

Michael Harwood

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of tim lindner
Sent: Tuesday, June 14, 2005 9:48 AM
To: CoCo Mailing List
Subject: [Coco] Rainbow on Tape/Disk

Michael Wayne Harwood <michael at musicheadproductions.org> wrote:

> What were you thinking in regards to this?  Would you be willing to do 
> the work to convert these into .dsk files??  Or would you rather send 
> me the disks and let me take care of it.  In that case this would be a 
> loan rather than a donation - you should expect to get your disks back 
> barring unforeseen circumstances out of my control.

They are already .dsk files. I consider myself somewhat of an expert
regarding disk image creation. :) I'll send them to you at my next

I suggest adding a column to your magazine web page to indicate which
disk/tape images you have access to. Since the disks are flippy I have
dumped each side to it's own file. Since there is no copy-protection on
these images, straight sector dumps are perfectly suitable and will work
with all of the emulators/tools.

An interesting note. The disks usually have an RS-DOS side and an OS-9 side.
But if the RS-DOS files were too numerous for one side of the disk, the
second side would be dual foramtted with a RS-DOS patition and an OS-9
partition. Pretty nifty.

Regarding the tapes. I don't have any but hopefully a complete set could be
found and included in the project.

WAV files of each tape could be _very_ large. The minimum sampling rate
would be 4800 hertz, that would reduce the file size dramatically. But be
wary of using popular lossy compression (mp3), that could destroy the data.
I do remember reports of people saying they didn't have any problems with
mp3 compressed tape files. But I think it would be worth looking into some
of the free lossless (flac) audio compression.

Of course another option is to not include disk/tape images, but to rip the
files out of the image and just store them as indivdual files. This will
dramitically reduce the space needed to sotre this data, but I don't think
it would be worth it to loose all of the meta-data associated with each

Each disk/tape came with a flyer describing what is on each disk/tape. I
have not scanned my flyers yet, but I will. I suggest adding another column
to determine if the scan of the flyer has been generated.

tim lindner
tlindner at ix.netcom.com                                            Bright

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