There
are
40
tracks
from
the
outside of
the
disc (Track 0), to
the
inside (Track 39), and
the
circumference
ofthe
disc is divided into 9 sectors.
Each
track
in
a sector
can
store up to 512 bytes of data; hence
the
total available space
on each side of a disc is 180Kbytes. .
First Steps Using the
Master
CP/M System
Discs
Package
To
prepare
a new
blank
disc for
reading
and
writing your own programs onto, you will
need to format
the
new disc. This is carried out using Side 1 of your
master
CP/M
system discs package (supplied
with
the
computer).
Switch
the
system on,
and
insert
Side 1 of
the
master
system discs package into
the
drive.
If
you
are
operating 2 disc drives, always
insert
Side 1 into
the
main
disc drive within
the
computer (Drive
A)
Type in:
I c p m
[RETURN]
(Y
ou will find
the
bar
symbol I by holding down
[SHIFT]
and
pressing
the
@ key.)
After a few seconds you will see
the
following message
at
the
top of
the
screen:
CP/M
PLus
Amstrad
Consumer
ELectronics
pLc
This is
a'S
i 9
non'
message indicating
that
the
computer is now
under
the
control of
the
CP/M
Plus
operating
system. You will also see the
letter
A>
together with the
cursor displayed on
the
screen. This is a prompt, (similar to
Rea
d y during normal
BASIC operation) indicating
that
the
computer is awaiting your instructions.
Once you
are
operating
CP/M,
you cannot
enter
BASIC commands into
the
computer,
as these will
not
be understood.
Iffor example, you type
in
the
BASIC command:
c L s
[RETURN]
The Computer will
return
your
entry,
together
with
a question mark:
CLS?
...
.indicating
that
it
does
not
understand
your command.
Foundation Course Chapter 1
Page
39
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