MANUAL FOR GRABROM (6502 Machine code)

This file describes the program GRABROM which transfers an image of a BBC 
series ROM to disk.For use on 8 bit BBC series of microcomputer,this finds 
applications where the ROM software is used infrequently and may be loaded into
sideways RAM when required.This reduces the amount of firmware inside the 
machine,hence reducing strain on the PSU.
The manual is (C)1997 SPROW and software is (C)1996 SPROW and (C)1995 A.J.Flegg

INSTRUCTIONS-
At any command line prompt,eg.the BASIC command prompt '>' type *GRABROM

The program will then install itself into page &C00 (the CHR$ defn buffer on 
the BBC and Electron,or Econet workspace on the Master) where it will trap all 
future *CODE or *LINE commands.

The syntax of use is displayed on first use,and can be recapped by the use of 
*LINE which will also cause the correct syntax to be displayed.

*CODE <rom number> saves an image to disk,with the filename entered by the 
user.The process can be aborted by pressing Escape at any point before the disk
drive starts.

The length of the ROM (8k or 16k only) is automatically detected by the 
software.

The minimum acceptable abbreviation is *CO.<rom mumber> and *LI.

EXIT MESSAGES-
"Bad id" - a ROM number greater than 15 was given
"GRABROM Syntax: *CODE <rom#>" - the use of *LINE shows this syntax
"Escape" - terminated by Escape

KNOWN PROBLEMS/FUTURE ENHANCEMENTS-
No known problems
Repointing of the 'reset' vector,to allow the pressing of BREAK,as for example 
may be performed when pressing BREAK-SHIFT to boot a disk.

HISTORY-
V1.00 First release version.
V1.10 Repoints USERV,not claims it.
V1.20 Uses *CODE to interpret the number to make code shorter than 256 bytes.
V1.30 Adds "Save as:" user interface
V1.40 Autodetect of image length added
V1.50 'Escape'ing from the "Save as:" question now causes an escape event,not
      just printing the word "Escape"