MANUAL FOR IMGTODFS (BBC BASIC)

This file describes the program IMGTODFS which writes an emulator SSD or DSD
disc image back to a physical DFS medium, either 5.25" or 3.5".
The manual and software are (C)2006 SPROW

INSTRUCTIONS-
At the BASIC prompt, type CHAIN"IMGTODFS"

The program will then prompt for the source image name, enter this as a fully
specified filename, eg. 
   :0.$.Images.Test.image/ssd
or similar.

Choose a destination drive, this is the DFS drive number to write to. You will
need a suitably formatted DFS disc on hand as the program does not format
the disc for you.

Choose the density, ie. 40 track is single density and 80 track is double.

Choose whether the original image was single or double sided, this is because
the extension might have been lost when copying to the source disc. An "SSD"
image is single sided and a "DSD" is double sided. Note that "DSD" images
are assumed to have interleaved sectors.

Lastly, choose whether to wait between reading and writing. This is so that
when only one drive is in use there is an opportunity to take out the source
disc before overwriting the target sectors. If using two different drives it
is not necessary, so choose "No".

The program will then read in blocks from the image file and write these out
to the target disc. Machines with more memory will mean fewer disc changes
so running on a coprocessor will make the operation very much faster.

KNOWN PROBLEMS/FUTURE ENHANCEMENTS-
Could detect the density by inspecting the disc catalogue inside the image
file.
Currently restricted to a Master series microcomputer as it requires the
use of temporary filing systems.
No known problems

HISTORY-
V1.00 Initial proof of concept release