Operation of the Mark Sense Reader.
----------------------------------

There have been some minor problems with this device and this note
is intended to clarify the operating procedures. It supercedes the note
dated 13 July 1981.


1. Power on the reader and set the appropriate switches before loading
the software.

2. The basic device driver is included in the IPL load, so only the
spooler reader should be loaded -
    LOAD MSRD
Then spool or connect the reader to the required host -
    SPO(CON) MSR/host
Note that only EMAS 2900 JCL is catered for, so host should be either
VWT or XWT. When the first card is detected, the user supplied
USERNAME, PASSWORD and FILENAME are requested on the video. The remainder
of the deck is then read in. To close the file - 
    EOF MSR

3. If a device driver fault, eg a timing error, occurs reload the last card.

4. The reader should not be run at the same time as the graph plotter
or else the graph plotter will 'wander'.


                        ..........                   C.McArthur
                                                     17-Nov-81