[Coco] low-level format of CF on Super IDE (i.e. where do the disk images go?)

[Boisy Pitre]

John,

This is "almost" correct.  The OS-9 partition goes first:

cat rbfimage.os9 > cfimage.bin
cat disk1.dsk>>cfimage.bin
...

Note that the HDB-DOS 24 bit offset at $D938 would need to point to  
the 512-byte sector where the first sector of the first HDB-DOS disk  
starts.  So take the size of rbfimage.os9, divide it by 512 and that's  
your value to put into $D938-$D93A (note that the rbfimage.os9 must be  
a multiple of 512 bytes)

On Apr 28, 2009, at 12:15 PM, John W. Linville wrote:

> So, let's say I want to start with a blank CF and prepare it for
> use with the Super IDE controller running HDB-DOS.  What is the
> sector-by-sector layout I would use for laying-down RSDOS diskette
> images and finally the RBF image for use by OS-9?
>
> Is space always reserved at the beginning for 256 diskette images?
> Are the images presumed to be a certain number of tracks/sides?
> If not, is there anything written on the CF to indicate the different
> size or number of images?
>
> My intuition suggests that given an acceptable number and size of
> diskette images, it would be as simple as this (in Linux or similar):
>
> 	cat disk1.dsk  > cfimage.bin
> 	cat disk2.dsk >> cfimage.bin
> 	...
> 	cat disk255.dsk >> cfimage.bin
> 	cat rbfimage.os9 >> cfimage.bin
>
> 	dd if=cfimage.bin of=/dev/sdb # where /dev/sdb represents the CF  
> device
>
> Am I on the right track?
>
> John
> -- 
> John W. Linville		Someday the world will need a hero, and you
> linville at tuxdriver.com			might be all we have.  Be ready.
>
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