Epson Apex Product Support Bulletin page 22

NUMBER:
S-0029C
Q. What kind of floppy Disk
kind of floppy diskettes should I use?
A.
The Apex comes
floppy disk
double-density,
diskette boxes
48TPI.
New blank
before being used.
Q. Can I use other types of floppy disk drives with the Apex?
A.
1.2MB, half-height
the Apex personal computer.
The Epson 3.5",
code A112A-AA)
compatible (available
Q. Can I install a Math-Coprocessor chip and what type do I need?
A:
A Math-Coprocessor chip
functions used
applications.
and computer stores
An 8087-2
recommended for
Coprocessor may also be
when
the slower
Coprocessor
Apex CPU board
parallel printer
up to select the math-coprocessor according to the User's Guide.
Q. How can I increase the Apex RAM memory to 640K Bytes?
A.
The Apex comes
suitable for
640KB by adding
board
RAM chips are
chips' directly
retailers. They can
which advertise in computer magazines such as PC Magazine.
should be certain to order the
there are other types of 64K RAM chips which will not work.
Since this is not the standard configuration of the Apex as it
is offered,
upgrade.
If service
removed before returning the Apex for repair.
drives does the Apex have and what
standard with
drives. Make
soft-sector,
are usually marked
diskettes
floppy disk
half-height,
has been tested
from Epson
is an option which
in many spreadsheet
It can be bought at
(Epson America Inc. does not supply them).
Math-Coprocessor
use with the
used but it will only operate reliably
speed (4.77MHz)
chip is installed in
(the board
interface).
standard with
most applications.
additional RAM
in the empty
required.
but they are
also be
Epson will not
is required,
two half-height,
only
sure to use
48 TPI floppy
DSDD or
must be formatted
drives are not
720KB floppy drive
with the Apex
computer dealers).
and math-intensive
electronic
chip which runs
Apex computer.
is selected.
the socket
which has the
The dip switches
512KB of RAM
The memory can be expanded to
memory chips
sockets
Epson does
available from
ordered from
4464 type (150ns)
warranty
provide
these RAM
PAGE:
3 of 6
5 1/4", 360KB
double-sided,
diskettes.
2S-2D, Soft-Sector,
in the computer
compatible with
(Epson Model
computer and
speeds up the math
software
parts retailers
at 8MHz
An 8087 Math-
The Math-
provided on
dip switches
need to be
memory which
to the CPU memory
Four 4464
supply these
electronic parts
mail order sources
RAM chips
support of this
chips should
The
is
is
the
and
set
is
You
as
be