CPC664 TECHNICAL
SPECIFICATION
LSI
CHIPS:
Z80A
processor running
at 4MHz
64K
bytes
ofRAM (over
41K available
to
user)
32K
bytes ofROM
for
BASIC and
OS
6845
CRT controller
device
AY-3-8912
sound
generator
chip
3
voice,
8 octaves
8255
parallel I/O device
DISPLAY
SPECIFIC
ATION:
Display
Mode
Model Mode 2
ModeO
No.
ofcolours
4
from
27 2
from 27 16 from 27
Vertical dots
320
640
160
Horizontal dots
200 200
200
Horiz. characters
40
80
20
KEYBOARD:
74
keys
-
qwerty style, numeric cluster, cursor and copy cursor,
large enter, shift,
caps
lock,
tab, escape,
delete, clear, control.
CASSETTE HANDLING:
Write speed software selectable
-
IK baud
or 2K baud, read speed
automatically
established
by
software. Motor
on/off controlled by
software.
ADD-ON
ABILITY:
Additional
compact floppy disc
drive
system,
type FD-1
.
Centronics compatable
printer.
Joystick(s).
Various
peripherals
including
up
to 252
additional 16K ROMs.
EXTERNAL
SOCKETS:
PCB
edge
connectors for general purpose
expansion and
Centro-
nics
parallel printer.
Disc drive 2 socket (Use
DI-2 connecting lead)
9 Pin D-type
socket forjoystick (Amsoft type
JY2)
6 Pin
DIN socket for
-
RGB,
sync
&
composite video
5 Pin
DIN socket for
external
cassette
recorder
...(Use
CL-1
connecting lead)
3.5mm
stereo socket for stereo sound output
5mm
plug and lead to 12v (disc) power
socket on the
monitor
5mm socket
for CPC664 5v power supply from monitor
DIMENSIONS
(mm):
w
Keyboard
580
CTM644
375
GT65
305
Joystick
90
Modulator
120
WEIGHTS (kg):
Keyboard 2.4
CTM644
10.6
GT65 6.3
Joystick 0.3
Modulator 1.4
h
70
340
315
170
70
d
170
365
335
100
170
POWER
SUPPLY:
Screen
System: 240V
AC
50Hz (keyboard
and
disc
drive
power supplied by
screen
system)
Keyboard/computer unit, Colour Monitor,
Green
Monitor -Designed
in U.K. , Made
in Korea. Joystick
-
Designed
in U.K.
, Made
in
Taiwan.
Power Supply/Modulator
-
Designed
in U.K., Made in U.K.
Software
-
Written in the UK and
U.S.
A,
Made
in Korea and U.K.
CP/M
and Dr LOGO
are trade mark*
ofDigital
Research Inc. IBM
and IBM
PC are trade
marks of
International
Business Machines
Inc.
AMSTRAD,
AMSOFT, AMSDOS,
CPC464
and CPC664 are
trademarks of
AMSTRAD Consumer
Electronics PLC.
Disc system specifications:
The disc drive is
a
3"
system,
conforming to the Hitachi/Panasonic
standard. The software is configured for
a 12mS step rate, and 30mS
settling time.
The system
is designed
to control
a
maximum of2 drives.
A ROM
contains the extensions for
AMSDOSand the machine
dependent
elements of CP/M and LOGO.
The ruggedly constructed
3"
discs are
usable on both sides, each
side is provided with a reusable write
protect clip which is slid into position
as
required.
AMSDOS
&
CP/M
AMSDOSis
a
disc operating
sytem which expands Locomotive
BASIC, adding additional
commands to make
full
use
ofthe disc
files. AMSDOSenables BASIC programs
to access
disc files in the
same
manner
as cassette files, in fact the same commands
are
used
with file names conforming
to CP/M
conventions. AMSDOS and
CP/M bothshare the same file structure and can read and write
each
other's files.
The Digital Research CP/M
operating
system is supplied with the
CPC664, permitting the user to
access
the
wealth ofapplications
software written
to
run under
CP/M.
In addition to the usual CP/M
utilities,
additional features have been included
for the CPC664.
Disc Organisation:
Both AMSDOS andCP/M support three
different disc formats:
SYSTEM format, DATAonly format, and IBM format.
Format selection is automatic on disc access.
All three formats use
the same framework,
but
havedifferent sector
configurations.
Common to all:
Single sided, double density.
512 byte
sector size.
40 tracks.
Sectors interleaved 2:1
.
SYSTEMformat:
The most
frequently
used
format, since CP/M may
only
be loaded
from asystem format disc. 2K is used
for the directory, and 9K
reserved
for the system.
9
sectors per track.
2 reserved tracks for CP/M.
169K byte
file capacity.
DATA only format:
All the tracks
are
used to store
data.
2K
bytes
reserved
for
the
directory.
9
sectors per track.
No reserved
tracks.
178K byte
file capacity.
IBM
format:
Logically similar to the single
sided
format
used by
CP/M on
the IBM PC.
2K bytes used
for the
directory,
4K reserved.
8 sectors
per track.
1 reserved track.
154K byte
file capacity.
Either side
ofan AMSTRAD
CP/M or AMSDOS
disc may
be
accessed by
the disc
controller,
depending on which way round the
disc
is
inserted.
Please note
that whilst
every care has been
taken to ensure
compatibility
with existing CP/M
software, some
packages
available
make use of
undocumented
features ofthe
CP/M
operating
system,
and these may
not
be
supported by
the CPC664
implementation.
Protected
cassette files
maynot
b&copied
to
disc;
and
care
should
be
taken to
observe the copyright
conditions
ofany
software when
transferring
programs between
cassette and
disc.
In
keeping
with our policy
ofcontinually
improving
our service, and
the
technical
quality ofour products, we
reserve
the right to change
component types,
manufacturers,
sources of
supply or technical
specification
at any time.
AMSTRAD CONSUMER
ELECTRONICS
pic*,
Brentwood
House, 1 69
Kings Road,
Brentwood, Essex CM14
4EF.
Telephone:
(0277)
228888
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