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External Connectors of the CPC and CPC+

Printer Port

CPC (edge)

Connector Type: 34 way 0.1" (2.54mm) P.C.B. edge

German CPC/Schneider CPC

Connector Type: 34-way Centronics female

Pin	Function	Input/Output
1	/STROBE	Output
2	D0	Output
3	D1	Output
4	D2	Output
5	D3	Output
6	D4	Output
7	D5	Output
8	D6	Output
9	GND	-
10	N.C.	-
11	BUSY	Input
12	N.C.	-
13	N.C.	-
14	GND	-
15	N.C.	-
16	N.C.	-
17	N.C.	-
18	N.C.	-
19	GND	-
20	GND	-
21	GND	-
22	GND	-
23	GND	-
24	GND	-
25	GND	-
26	GND	-
27	GND	-
28	GND	-
29	N.C.	-
30	N.C.	-
31	N.C.	-
32	N.C.	-
33	GND	-
34	N.C.	-
35	N.C.	-

 

CPC+

Connector Type: 25-way D-type female

Pin	Function	Input/Output
1	/STROBE	Output
2	D0	Output
3	D1	Output
4	D2	Output
5	D3	Output
6	D4	Output
7	D5	Output
8	D6	Output
9	D7	Output
10	N.C.	-
11	BUSY	Input
12	N.C.	-
13	N.C.	-
14	N.C.	-
15	N.C.	-
16	+5v	-
17	GND	-
18	GND	-
19	GND	-
20	GND	-
21	GND	-
22	GND	-
23	GND	-
24	GND	-
25	GND	-

Notes

• BUSY is connected to bit 6 of PPI port B.
• CPC can only send 6-bit data. D7 is GND.
• On CPC+, bit 3 of CRTC register 12 (MA10) defines the state of D7.
• The printer port is accessed using a I/O write and A12="0". The table below shows the correspondance between data written and signal:

  Bit	Signal
  7	/STROBE
  6	D6
  5	D5
  4	D4
  3	D3
  2	D2
  1	D1
  0	D0

• /STROBE is inverted by the CPC/CPC+ hardware. When Bit 7 is written as "0", /STROBE will be "1". When bit 7 is written as "0", /STROBE will be "1".

Aux Socket (CPC+ only)

Connector Type: six contacts, six position FCC68 telephone socket

Pin	Function	Input/Output
1	+5v	-
2	Common	-
3	L.pen	Input
4	Fire 2	Input
5	Fire 1	Input
6	Gnd	-

Notes:

• This connector is used to connect a light-pen or light-gun to the CPC+
• L.Pen is the same as the L.PEN signal at the expansion connector

Digital Joystick Connector (CPC)

Connector type: 9-pin D-Type male.

Pin	Function	Input/Output
1	Up	Input
2	Down	Input
3	Left	Input
4	Right	Input
5	Fire 3	Input
6	Fire 2	Input
7	Fire 1	Input
8	Common 1	-
9	Common 2	-

Notes:

• Common 1 and Common 2 can't be accessed through software. Common 1 is used to select Joystick 1 and Common 2 is used to select Joystick 2.
• Two joysticks can be connected to this single port if a joystick splitter lead is used. Common 1 and Common 2 are used to select the joystick and the state of the selected joystick (directions and fire button states) is available at connections 1-7.
• As far as I know the signals are read-only.
• It is possible to use this port as a general purpose input port.
• The joystick port is connected to the keyboard matrix and can be read in the same way as reading the keyboard.

Analogue joystick connectors

Connector type: 15-pin D-type female.

Pin	Function
1	Gnd
2	Fire 1
3	X1
4	Com 1
5	+5v
6	Y1
7	Fire 2
8	Gnd
9	Gnd
10	Fire 1
11	X2
12	Com 2
13	Y2
14	Fire 2
15	Gnd

Stereo Sound connector

Connector Type: 3.5mm stereo socket

The sound channels (A,B and C) from the AY-3-8912 IC are mixed to produce two audio channels which are available at the stereo socket.

The channels are mixed as follows:

Channel	Audio Output Channel
A	Left Only
B	Left & Right
C	Right Only

Monitor Connector

CPC

Connector type: 6-pin DIN female.

Pin	Function	Input/Output
1	Red	Output
2	Green	Output
3	Blue	Output
4	Composite Sync	Output
5	Gnd	-
6	Luminance	Output

PLUS

Connector type: 8-pin DIN female.

Pin	Function	Input/Output
1	Composite Sync	Output
2	Green	Output
3	Luminance	Output
4	Red	Output
5	Blue	Output
6	Left Audio Channel	Output
7	Right Audio Channel	Output
8	Gnd	-

Note:

• Red, Green and Blue are analogue outputs
• Composite Sync is generated from Horizontal and Vertical Sync signals
• Luminance is a signal
• Red, Green, Blue, Composite Sync and Gnd are the only signals required for a colour display. (e.g. Amstrad CTM640 and CTM644 monitors)
• Luminance, Composite Sync and Gnd are the only signals required for a black/white or green-screen display. (e.g. Amstrad GT64 and GT65 monitors).
• Left and Right Audio channel are the same as the signals available on the CPC Stereo connector.

Cassette recorder connector

This connector is available on the CPC464, CPC664, CPC6128 and 464 plus.

Connector type: 5-pin DIN female.

Pin	Function	Input/Output
1	Remote	Output (note 3 & 4)
2	Gnd	-
3	Remote	Output (note 3 & 4)
4	Data In	Input (note 3 & 4)
5	Data Out	Output (note 3 & 4)

Notes:

• The "Remote" signal is used to control the cassette player motor.
• The signals can be accessed through software:
  • "Remote" is connected to bit 4 of PPI port C.
  • "Data In" is connected to bit 7 of PPI port B.
  • "Data Out" is connected to bit 5 of PPI port C.
• On the CPC it is possible to use "Remote", "Data In" and "Data Out" as general purpose input/output signals through clever programming of the PPI.
• On the CPC+, which does not have a true PPI, "Remote" and "Data Out" can only be used for output, and "Data In" can only be used as input. (TO BE CONFIRMED!)

Expansion Connector

CPC

Connector Type: 50-way 0.1" (2.54mm) edge

German CPC/Schneider CPC

Connector Type: 50-way Centronics female

CPC+

Connector Type: 50-way Centronics female

Pin Number	Pin Signal	Input/Output
1	Sound	Output
2	Gnd	-
3	A15	Output
4	A14	Output
5	A13	Output
6	A12	Output
7	A11	Output
8	A10	Output
9	A9	Output
10	A8	Output
11	A7	Output
12	A6	Output
13	A5	Output
14	A4	Output
15	A3	Output
16	A2	Output
17	A1	Output
18	A0	Output
19	D7	Input/Output
20	D6	Input/Output
21	D5	Input/Output
22	D4	Input/Output
23	D3	Input/Output
24	D2	Input/Output
25	D1	Input/Output
26	D0	Input/Output
27	+5v	-
28	/MREQ	Output
29	/M1	Output
30	/RFSH	Output
31	/IORQ	Output
32	/RD	Output
33	/WR	Output
34	/HALT	Output
35	/INT	Input
36	/NMI	Input
37	/BUSRQ	Input
38	/BUSAK	Output
39	/WAIT (READY)	Input
40	/BUS RESET	Input
41	/RESET	Input
42	/ROMEN	Output
43	ROMDIS	Input
44	/RAMRD	Output
45	RAMDIS	Input
46	CURSOR	Output
47	L.PEN	Input
48	/EXP	Input (note 1)
49	Gnd	-
50	φ (4Mhz clock)	-

Notes:

• This signal can be re-programmed as a input by using the PPI

Disc Drive 2 Connector (CPC664/6128/CPC6128+)

CPC

Connector Type: 34-way 0.1" (2.54mm) edge connector

German CPC/Schneider CPC

Connector Type: 34-way Centronics socket (female)

Pin	Function	Input/Output
1	READY	Input
2	GND	-
3	SIDE SELECT	Output
4	GND	-
5	READ DATA	Input
6	GND	-
7	WRITE PROTECT	Input
8	GND	-
9	TRACK 0	Input
10	GND	-
11	WRITE GATE	Output
12	GND	-
13	WRITE DATA	Output
14	GND	-
15	STEP	Output
16	GND	-
17	DIRECTION SELECT	Output
18	GND	-
19	MOTOR ON	Output
20	GND	-
21	N.C.	-
22	GND	-
23	DRIVE SELECT 1	Output
24	GND	-
25	DRIVE SELECT 0	Output
26	GND	-
27	INDEX	Input
28	GND	-
29	N.C.	-
30	GND	-
31	N.C.	-
32	GND	-
33	N.C.	-
34	GND	-

CPC+

Connector Type: 36-way Centronics female

Pin	Function	Input/Output
1	N.C.	-
2	GND	-
3	N.C.	-
4	GND	-
5	N.C.	-
6	GND	-
7	INDEX	-
8	GND	-
9	N.C.	-
10	GND	-
11	DRIVE 1 SELECT	Output
12	GND	-
13	N.C.	-
14	GND	-
15	MOTOR ON	Output
16	GND	-
17	DIRECTION STEP	Output
18	GND	-
19	STEP	Output
20	GND	-
21	WRITE DATA	Output
22	GND	-
23	WRITE GATE	Output
24	GND	-
25	TRACK 0	Input
26	GND	-
27	WRITE PROTECT	Input
28	GND	-
29	READ DATA	Input
30	GND	-
31	SIDE 1 SELECT	Output
32	GND	-
33	READY	Input
34	GND	-
35	N.C.	-
36	GND	-

Article créé le :	Mercredi 28 Octobre 2009 à 21 h 13
Dernière mise à jour le :	Mercredi 28 Octobre 2009 à 21 h 13