hh: the
hour
(on a 24-hour clock basis)
mm: minutes past the hour
ss: seconds past the minute
When these figures have been typed in, any mistake can be corrected by mov-
ing the cursor
to
sit over the incorrect number
and
then retyping
that
number.
The complete values
of
the time and date are
not
entered into the memory
of
the PX-S until the key marked I
RETURN
I
is
pressed. You should check
that
the
values are absolutely correct before pressing the
I
RETURN
I key. Leading zeros
must be added
if
the
month
etc
is
less
than
10. Failing
to
do this will result
in the information being
out
of
sequence.
~
WARNING:
W The date and time
are
not actually updated until the day is input.
It
is
possible to update the time and date using either the CONFIG program
(see
Chapter
3)
or using the TIME$ and
DATE$
commands in
BASIC
(see
the
BASIC
Reference Manual). These give accurate updating
of
the
time.
When I
RETURN
I
is
pressed, the next question comes
up
on
the screen:
ENTER
DAY (9 to 6)
The cursor
is
flashing over a single zero this time, waiting for a number from
o to 6
to
denote the day
of
the week. The days are represented numerically in
the order:
9 Sunday
1 Monday
2 Tuesday
3 Wednesday
4 Thursday
5 Friday
6 Saturday
The day
is
not
changed in the memory
of
the PX-S until the I
RETURN
I key
is
pressed. The day
is
then stored
and
the next question
is
asked.
The third question
is
ENTER
RAM DISK SIZE
2-8
The PX-S allows
part
of
the memory to be reserved to store programs and data.
It
can be used as
if
it were a disk drive. Since the memory used
is
the standard
Random Access Memory used to
run
programs
and
store working data, the
part
of
memory used as a pseudo-disk drive
is
known as the RAM disk.
In
ac-
cessing the drive under
CP
1M
the drive A:
is
assigned
to
the RAM Disk as
described in Chapter 3. It
is
also possible to have
an
additional block
of
memory
which gives a further 60
or
120 kilobytes
of
storage which plugs into the back
of
the PX-S. Further details are given in Chapter 4.
If
this extra item, the Intel-
ligent RAM disk,
is
attached this particular question will not be asked because
no internal memory can then be allocated for use as a RAM disk.
The cursor lies over the first digit
of
the default value
of
9 kilobytes (9K) ex-
pressed in the form
"09".
Default means the value the PX-S thinks you would
normally expect
to
use, and which it will set unless you change this value.
Up
to
24K
of
RAM can be reserved for the RAM disk.
SYSTEM
INITIALIZE
ENTER
DATE
TIME
(MMDDYYhhmmss)
000000000000
ENTER
DAY
(0
to
6)
0
ENTER
RAM
DISK
SIZE
09
Fig.
2.7
The procedure for entering the size
of
RAM disk you require
is
the same as
with the previous questions. Since the value entered
is
that
displayed, simply
press the
I
RETURN
I key
if
you wish to use the default value
of
9K
bytes.
If
you
wish
to
chan~e
the size
of
the RAM disk, alter the value
and
press the I
RETURN
I
key. The RAM disk size can only be set in
lK
byte units and the value 0 and
2 to 20 can be input.
When the RAM disk size has been set the next question is:
ENTER
USER BIOS SIZE 99
This
is
a facility for advanced programmers. The cursor will be positioned over
the first digit
of
a pair
of
zeros. Unless you have a specific need to use the USER
BIOS area simply press the
I
RETURN
I key
at
this stage.
The use
of
the USER BIOS
area
is covered in the OS Reference Manual. The
location
of
the USER BIOS
area
can be seen in the memory map (Appendix
F). The number entered in response
to
this question denotes the number
of
256
2-9
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