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CHAPTER 1
1.
INTRODUCTION
The
E X OR dis k I l i s
a
sin 9 1
e
-5
ide d ,
sin 9 1
e -
den sit
tJ '
d u a 1
diskette drive storage
system
designed
for
use
with
the
EXORciser
or
EXORterm,
The EXORdisk III is a double-sided,
single-density,
dual diskette drive storage
system
designed
for use with the EXORciser or EXDRterm.
The EXORdisk
III
can
be expanded into a four-drive system.
With either the EXORdisk II or EXORdisk III system,
the
following
items are also included:
a
Tlopp~
disk controller
module,
a floppy disk interconnection cable assembly,
and
a
software disk operating system.
An illustration of a typical
EXORdisk system is shown in Figure 1-1.
The M6800 Diskette
Operating
System
(MOOS)
or
M6809
Diskette
Operating
System (MDOS09),
in conJunction with the
EXORciser
and
EXORdisk
II
or
EXORdisk
III,
provides
a
powerful
and
easy-to-use tool for software development.
t"or
the remainder
of
this manual,
all
references
to
MDOS
will
encompass
both
the
M6800
version
as
well
as
the M6809
version,
unless otherwise specified.
MDOS is an interactive
operating
system
that
obtains
commands from the
s~stem
consol~.
These commands
are
used to
move data on the diskette,
to process data,
or
to
activate
user-written
processes
from
diskette.
All
this
can
be
accomplished with a minimum of effort;
and since
MDOS
is,
a
facilities
oriented
system;
rather
than
a
supervisory
o~iented
onel
a minimum of overhead is imposed.
In
addition,
an
extensive
set
of
resident
system
functions
are
provided
for
general
~evelopment
use.
Such
functions as dynamic space allocation,
random access to
data
files,
record I/O for supported and non-supported devices,
as
well as many registerl
string,
and
other
diskette-oriented
routines
make
MDOS
a
good
basis for a user's application
system.
Page
01-01
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