Connectors

Overview

The entire machine is realized with module cards that plug into a backplane called A1 board. These cards have fixed locations on the backplane and cannot be swapped except the memory modules. The modules A4 to E4 are optional and depend on what has been ordered from IBM. For this reason some of the cable connectors on the side of the A1 board may be unused. Standard are Y1, Z2 (only model 1), Z3 and Z4.

Here is a location map of the modules:

Now some pictures of the modules each in 100 dpi and 300 dpi. The smaller ones can be selected on the map above, too.

Card D2 - Asynchronous communications / Serial I/O
- small - 128 kB
- big - 753 kB
Card F2 - ROS control
- small - 106kB
- big - 598kB
Card G2 - Graphics adapter
- small - 112kB
- big - 623kB
Card H2 - Base I/O
- small - 116 kB
- big - 740 kB
Card J2 - Controller (Prozessor card)
- small - 106 kB
- big - 756 kB
Card M2 - Read/Write Storage (organized as 8k x 18)
- small - 56 kB
- big - 383 kB

Pinouts

The pinouts of the connectors Y2, Y3 and Z1 are along with the description of the corresponding card.

Pinout Y1 connector
Y1 Cable
Pin A1 Board
Pin
Name Y1 Cable
Pin A1 Board
Pin
Name

D02 A1D11 +5V DC B02 A1D13 +5V DC

D03 A1E11 +5V DC B03 A1E13 +5V DC

D04 B1A11 +5V DC B04 B1A13 +5V DC

D05 B1B11 +5V DC B05 B1B13 +5V DC

D06 B1C11 GND B06 B1C13 GND

D07 B1D11 GND B07 B1D13 GND

D08 B1E11 GND B08 B1E13 GND

D09 C1A11 GND B09 C1A13 GND

D10 C1B11 GND B10 C1B13 (unused)

D11 C1C11 +8,5V DC B11 C1C13 +8,5V DC

D12 C1D11 +12V DC B12 C1D13 +12V DC

D13 C1E11 -5V DC B13 C1E13 -12V DC

Pinout Y1 connector
Y1 Cable Pin	A1 Board Pin	Name	Y1 Cable Pin	A1 Board Pin	Name
D02	A1D11	+5V DC	B02	A1D13	+5V DC
D03	A1E11	+5V DC	B03	A1E13	+5V DC
D04	B1A11	+5V DC	B04	B1A13	+5V DC
D05	B1B11	+5V DC	B05	B1B13	+5V DC
D06	B1C11	GND	B06	B1C13	GND
D07	B1D11	GND	B07	B1D13	GND
D08	B1E11	GND	B08	B1E13	GND
D09	C1A11	GND	B09	C1A13	GND
D10	C1B11	GND	B10	C1B13	(unused)
D11	C1C11	+8,5V DC	B11	C1C13	+8,5V DC
D12	C1D11	+12V DC	B12	C1D13	+12V DC
D13	C1E11	-5V DC	B13	C1E13	-12V DC

Pinout Z2 connector
Z2 Cable
Pin A1 Board
Pin
Name Z2 Cable
Pin A1 Board
Pin
Name

D02 D6E02 -EOT B02 D6E04 +Tape Clock

D03 E6A02 -Erase Inactive B03 E6A04 +5V dc

D04 E6B02 -BOT B04 E6B04 -Forward

D05 E6C02 -Diagnostic Mode B05 E6C04 -Run

D06 E6D02 -5V dc B06 E6D04 -Write Enable

D07 E6E02 -LED and Erase OK B07 E6E04 -Write Data

D08 F6A02 GND B08 F6A04 GND

D09 F6B02 -Read Data B09 F6B04 -Channel Select

D10 F6C02 -Read Clock B10 F6C04 -Channel 0 Erase

D11 F6D02 +12V dc B11 F6D04 -Channel 1 Erase

D12 F6E02 -Cartridge in Place B12 F6E04 -Select Magnet Active

D13 G6A02 -12V dc B13 F6A04 +File Protect

Pinout Z2 connector
Z2 Cable Pin	A1 Board Pin	Name	Z2 Cable Pin	A1 Board Pin	Name
D02	D6E02	-EOT	B02	D6E04	+Tape Clock
D03	E6A02	-Erase Inactive	B03	E6A04	+5V dc
D04	E6B02	-BOT	B04	E6B04	-Forward
D05	E6C02	-Diagnostic Mode	B05	E6C04	-Run
D06	E6D02	-5V dc	B06	E6D04	-Write Enable
D07	E6E02	-LED and Erase OK	B07	E6E04	-Write Data
D08	F6A02	GND	B08	F6A04	GND
D09	F6B02	-Read Data	B09	F6B04	-Channel Select
D10	F6C02	-Read Clock	B10	F6C04	-Channel 0 Erase
D11	F6D02	+12V dc	B11	F6D04	-Channel 1 Erase
D12	F6E02	-Cartridge in Place	B12	F6E04	-Select Magnet Active
D13	G6A02	-12V dc	B13	F6A04	+File Protect

Pinout Z3 connector
Z3 Cable
Pin A1 Board
Pin
Name Z3 Cable
Pin A1 Board
Pin
Name

D02 H6A02 -Reverse Display B02 H6A04 +Single Instruction Switch (com)

D03 H6B02 +5V dc B03 H6B04 +APL Switch

D04 H6C02 -Run Switch and Not IPL B04 H6C04 -Single Instruction Switch (nc)

D05 H6D02 +Single Instruction Switch (no) B05 H6D04 +In Process LED

D06 H6E02 -Display Reg B06 H6E04 -Machine Video

D07 J6A02 -Normal 64 B07 J6A04 -I/O Display Off

D08 J6B02 GND B08 J6B04 GND

D09 J6C02 GND B09 J6C04 -Machine Check LED

D10 J6D02 +Alarm On B10 J6D04 -Right Select 32

D11 J6E02 -External Horizontal Drive B11 J6E04 +12V dc

D12 K6A02 -External Vertical Sync B12 K6A04 (unused)

D13 K6B02 -Power On Reset Switch B13 K6B04 +Monitor Video

Pinout Z3 connector
Z3 Cable Pin	A1 Board Pin	Name	Z3 Cable Pin	A1 Board Pin	Name
D02	H6A02	-Reverse Display	B02	H6A04	+Single Instruction Switch (com)
D03	H6B02	+5V dc	B03	H6B04	+APL Switch
D04	H6C02	-Run Switch and Not IPL	B04	H6C04	-Single Instruction Switch (nc)
D05	H6D02	+Single Instruction Switch (no)	B05	H6D04	+In Process LED
D06	H6E02	-Display Reg	B06	H6E04	-Machine Video
D07	J6A02	-Normal 64	B07	J6A04	-I/O Display Off
D08	J6B02	GND	B08	J6B04	GND
D09	J6C02	GND	B09	J6C04	-Machine Check LED
D10	J6D02	+Alarm On	B10	J6D04	-Right Select 32
D11	J6E02	-External Horizontal Drive	B11	J6E04	+12V dc
D12	K6A02	-External Vertical Sync	B12	K6A04	(unused)
D13	K6B02	-Power On Reset Switch	B13	K6B04	+Monitor Video

Pinout Z4 connector
Z4 Cable
Pin A1 Board
Pin
Name Z4 Cable
Pin A1 Board
Pin
Name

D02 L6B02 (unused) B02 L6B04 (unused)

D03 L6C02 +5V dc B03 L6C04 (unused)

D04 L6D02 (unused) B04 L6D04 -Kbd P

D05 L6E02 (unused) B05 L6E04 -Kbd O

D06 M6A02 -Kbd 1 B06 M6A04 (unused)

D07 M6B02 -Power On Reset B07 M6B04 -Kbd Strobe

D08 M6C02 GND B08 M6C04 -Kbd 3

D09 M6D02 +Typamatic B09 M6D04 -Kbd 4

D10 M6E02 (unused) B10 M6E04 -Kbd 5

D11 N6A02 -Keyboard Lockout B11 N6A04 +8,5V dc

D12 N6B02 (unused) B12 N6B04 -Kbd 7

D13 N6C02 -Kbd 2 B13 N6C04 -Kbd 6

Z4 Cable Pin	A1 Board Pin	Name	Z4 Cable Pin	A1 Board Pin	Name
D02	L6B02	(unused)	B02	L6B04	(unused)
D03	L6C02	+5V dc	B03	L6C04	(unused)
D04	L6D02	(unused)	B04	L6D04	-Kbd P
D05	L6E02	(unused)	B05	L6E04	-Kbd O
D06	M6A02	-Kbd 1	B06	M6A04	(unused)
D07	M6B02	-Power On Reset	B07	M6B04	-Kbd Strobe
D08	M6C02	GND	B08	M6C04	-Kbd 3
D09	M6D02	+Typamatic	B09	M6D04	-Kbd 4
D10	M6E02	(unused)	B10	M6E04	-Kbd 5
D11	N6A02	-Keyboard Lockout	B11	N6A04	+8,5V dc
D12	N6B02	(unused)	B12	N6B04	-Kbd 7
D13	N6C02	-Kbd 2	B13	N6C04	-Kbd 6