[Coco] help with fd-501 disk images and toolshed

[xnaron]

As for writing back a disk for the coco...I probably shouldn't be trying to
write 40 tracks back then.  I think I should probably use the COCO2
parameters as below for fdutil.  I will give that a shot.


# Color computer, sides 1 and 2
"COCO1":
 SS DD sect=18 cyl=35 ssize=256

"COCO2":
 SS DD sect=18 cyl=35 ssize=256

# TRS-8- Color Computer os9 formats (to be confirmed). Needs
# zero-based floppy patch
"COCO360":
 DS DD sect=18 cyl=40 ssize=256 tpi=48 zero-based

"COCO720":
 DS DD sect=18 cyl=80 ssize=256 tpi=96 zero-based



On Sat, Mar 15, 2014 at 4:54 PM, Robert Gault <robert.gault at att.net> wrote:

> xnaron wrote:
>
>> Hi,
>> <snip>
>> Here is the link to the image I pulled.  http://xnaron.com/floppy1.zip
>>
>>
>>
>> Here is the rub.  I can't read this file with the toolshed decb tool.
>>
>>  ><snip>
>
>> Can anyone comment on why this is happening?  I'm probably missing
>> something simple but all the googling and reading of documentation isn't
>> getting me anywhere.
>>
>>
>>
>> Thanks,
>>
>> Brendin
>>
>>
> It is simple. The image is not in a format that the tool understands.
>
> If you look at the raw image, it is exactly $5A000 bytes which is a 40
> track double sided disk. That is not the default Coco image format and you
> need to place a header on the file to change it to a jvc format so that the
> disk can be recognized correctly.
> I added the two bytes $12 $02 to the front of the file and changed the
> name to floppy1.dsk. Wimgtool (MESS) then recognized the disk as a Disk
> Basic format containing zaxxon2.bin, robotron.bin, galaga.bin, lun-rov3.bin
> and trapfall.bin.
> The disk mounted in VCC could be read correctly from Disk Basic with DIR
> and at least one of the programs galaga ran correctly.
>
> Robert
>
>
>
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