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

[xnaron]

Thank you Robert.  It's funny though when I create a dsk image with decb
dskini (as below) the first 2 bytes are $FF $FF.

 ./decb dskini now.dsk -8  ( I used 80 track as this created a file size
(368640) that matched the image I had pulled off previously)

 ./decb copy -2 ../drivewire/dw3doscc3.bin now.dsk,dw3doscc.bin

 ls -l

-rw-r--r-- 1 root    root    368640 Mar 15 19:09 now.dsk

 ./decb dir ./now.dsk,

dw3doscc bin  2  B  1

 I then put it on a floppy like this:

 setfdprm /dev/fd0 coco40ds

dd if=now.dsk  of=/dev/fd0

 Then when I tried it in the coco it could not read the directory.  I am
not sure what I need to do to the file to make it work.

Brendin



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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