View source for MVS MV-6 daughter board connectors pinouts

Ongoing Reverse Enginering by Pudrik.

[[MV6]] Daughter Board 
PCB connectors pinouts:

=CN8=

{|class="wikitable"
!Pin||Connected to||Location
|-
|A1||+5V||
|-
|A2||+5V||
|-
|A3||+5V||
|-
|A4||Pin 5 of 74F251||K3
|-
|A5||Pin 5 of 74F251||J3
|-
|A6||Pin 5 of 74F251||H3
|-
|A7||Pin 5 of 74F251||G3
|-
|A8||Pin 5 of 74F251||G1
|-
|A9||Pin 5 of 74F251||F2
|-
|A10||NC?||
|-
|A11||Pin 1 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|A12||NC?||
|-
|A13||NC?||
|-
|A14||Pin 8 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A15||Pin 6 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A16||Pin 4 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A17||Pin 2 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A18||Pin 11 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A19||Pin 13 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A20||Pin 15 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A21||Pin 17 of 74LS244||A4, A8, A12, A16, A20, A24
|-
|A22||Pin 8 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A23||Pin 6 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A24||Pin 4 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A25||Pin 2 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A26||Pin 11 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A27||Pin 13 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A28||Pin 15 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A29||Pin 17 of 74LS244||B4, B8, B12, B16, B20, B24
|-
|A30||GND||
|-
|A31||GND||
|-
|A32||GND||
|-
|&nbsp;|| ||
|-
|B1||+5V||
|-
|B2||+5V||
|-
|B3||+5V||
|-
|B4||Pin 5 of 74F251||K2
|-
|B5||Pin 5 of 74F251||J2
|-
|B6||Pin 5 of 74F251||H2
|-
|B7||Pin 5 of 74F251||G2
|-
|B8||Pin 5 of 74F251||F3
|-
|B9||Pin 5 of 74F251||F1
|-
|B10||Pin 5 of 74F251||E3
|-
|B11||Pin 5 of 74F251||E2
|-
|B12||Pin 5 of 74F251||D3
|-
|B13||Pin 5 of 74F251||D2
|-
|B14||Pin 5 of 74F251||D1
|-
|B15||Pin 5 of 74F251||C3
|-
|B16||Pin 5 of 74F251||C2
|-
|B17||Pin 5 of 74F251||C1
|-
|B18||Pin 8 of 74LS244||A5, A9, A13, A17, A21, A25
|-
|B19||Pin 6 of 74LS244||A5, A9, A13, A17, A21, A25
|-
|B20||Pin 4 of 74LS244||A5, A9, A13, A17, A21, A25
|-
|B21||Pin 2 of 74LS244||A5, A9, A13, A17, A21, A25
|-
|B22||Pin 9 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B23||Pin 8 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B24||Pin 7 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B25||Pin 6 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B26||Pin 5 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B27||Pin 4 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B28||Pin 3 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B29||Pin 2 of 74LS245||B5, B9, B13, B27, B21, B25
|-
|B30||GND||
|-
|B31||GND||
|-
|B32||GND||
|}
The ICs:

* A4, A8, A12, A16, A20, A24 = 74LS244
* A5, A9, A13, A17, A21, A25 = 74LS244
* B4, B8, B12, B16, B20, B24 = 74LS244
* B5, B9, B13, B27, B21, B25 = 74LS245
* C1, C2, C3 = 74F251
* D1, D2, D3 = 74F251
* E2, E3 = 74F251
* F1, F2, F3 = 74F251
* G1, G2, G3 = 74F251
* H2, H3 = 74F251
* J2, J3 = 74F251
* K2, K3 = 74F251

=CN9=

{|class="wikitable"
!Pin||Connected to||Location
|-
|A1||+5V||
|-
|A2||+5V||
|-
|A3||+5V||
|-
|A4||Pin 8 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A5||Pin 6 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A6||Pin 4 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A7||Pin 2 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A8||Pin 11 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A9||Pin 13 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A10||Pin 15 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A11||Pin 17 of 74LS244||L4, L8, L12, L16, L20, L24
|-
|A12||Pin 8 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A13||Pin 6 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A14||Pin 4 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A15||Pin 2 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A16||Pin 11 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A17||Pin 13 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A18||Pin 15 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A19||Pin 17 of 74LS244||M4, M8, M12, M16, M20, M24
|-
|A20||Pin 5 of 74F251||K28
|-
|A21||Pin 5 of 74F251||K30
|-
|A22||Pin 5 of 74F251||J29
|-
|A23||Pin 5 of 74F251||H28
|-
|A24||Pin 5 of 74F251||H30
|-
|A25||Pin 5 of 74F251||G29
|-
|A26||Pin 5 of 74F251||F28
|-
|A27||Pin 5 of 74F251||F30
|-
|A28||Pin 5 of 74F251||E29
|-
|A29||Pin 5 of 74F251||D28
|-
|A30||Pin 5 + Pin 8 of 74F138||C28
|-
|A31||GND||
|-
|A32||GND||
|-
|&nbsp;|| ||
|-
|B1||+5V||
|-
|B2||+5V||
|-
|B3||+5V||
|-
|B4||Pin 8 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B5||Pin 6 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B6||Pin 4 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B7||Pin 2 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B8||Pin 17 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B9||Pin 15 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B10||Pin 13 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B11||Pin 11 of 74LS244||L5, L9, L13, L17, L21, L25
|-
|B12||Pin 8 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B13||Pin 6 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B14||Pin 4 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B15||Pin 2 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B16||Pin 17 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B17||Pin 15 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B18||Pin 13 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B19||Pin 11 of 74LS244||N5, N9, N13, N17, N21, N25
|-
|B20||Pin 5 of 74F251||K29
|-
|B21||Pin 5 of 74F251||J28
|-
|B22||Pin 5 of 74F251||J30
|-
|B23||Pin 5 of 74F251||H29
|-
|B24||Pin 5 of 74F251||G28
|-
|B25||Pin 5 of 74F251||G30
|-
|B26||Pin 5 of 74F251||F29
|-
|B27||Pin 5 of 74F251||E28
|-
|B28||Pin 5 of 74F251||E30
|-
|B29||Pin 5 of 74F251||D29
|-
|B30||GND||
|-
|B31||GND||
|-
|B32||GND||
|}
The ICs:

* C28 = 74F138
* D28, D29 = 74F251
* E28, E29, E30 = 74F251
* F28, F29, F30 = 74F251
* G28, G29, G30 = 74F251
* H28, H29, H30 = 74F251
* J28, J29, J30 = 74F251
* K28, K29, K30 = 74F251
* L4, L8, L12, L16, L20, L24 = 74LS244
* L5, L9, L13, L17, L21, L25 = 74LS244
* M4, M8, M12, M16, M20, M24 = 74LS244
* N5, N9, N13, N17, N21, N25 = 74LS244

=CN10=

{|class="wikitable"
!Pin||Connected to||Location
|-
|A1||+5V||
|-
|A2||+5V||
|-
|A3||+5V||
|-
|A4||+5V||
|-
|A5||Pin 11 of 74LS245 + Pin 14 of 74F174||L6, L10, L14, L18, L22, L26, C29
|-
|A6||Pin 12 of 74LS245 + Pin 13 of 74F174||L6, L10, L14, L18, L22, L26, C29
|-
|A7||Pin 13 of 74LS245 + Pin 11 of 74F174||L6, L10, L14, L18, L22, L26, C29
|-
|A8||Pin 14 of 74LS245||L6, L10, L14, L18, L22, L26
|-
|A9||Pin 15 of 74LS245||L6, L10, L14, L18, L22, L26
|-
|A10||Pin 16 of 74LS245||L6, L10, L14, L18, L22, L26
|-
|A11||Pin 17 of 74LS245||L6, L10, L14, L18, L22, L26
|-
|A12||Pin 18 of 74LS245||L6, L10, L14, L18, L22, L26
|-
|A13||Pin 11 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A14||Pin 12 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A15||Pin 13 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A16||Pin 14 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A17||Pin 15 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A18||Pin 16 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A19||Pin 17 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A20||Pin 18 of 74LS245||M6, M10, M14, M18, M22, M26
|-
|A21||Pin 11 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A22||Pin 13 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A23||Pin 15 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A24||Pin 17 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A25||Pin 8 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A26||Pin 6 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A27||Pin 4 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A28||Pin 2 of 74LS244||N6, N10, N14, N18, N22, N26
|-
|A29||GND||
|-
|A30||GND||
|-
|A31||GND||
|-
|A32||GND||
|-
|&nbsp;|| ||
|-
|B1||+5V||
|-
|B2||+5V||
|-
|B3||+5V||
|-
|B4||+5V||
|-
|B5||Pin 11 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B6||Pin 13 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B7||Pin 15 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B8||Pin 17 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B9||Pin 2 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B10||Pin 4 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B11||Pin 6 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B12||Pin 8 of 74LS244||L7, L11, L15, L19, L23, L27
|-
|B13||Pin 11 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B14||Pin 13 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B15||Pin 15 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B16||Pin 17 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B17||Pin 2 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B18||Pin 4 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B19||Pin 6 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B20||Pin 8 of 74LS244||M7, M11, M15, M19, M23, M27
|-
|B21||Pin 2 of 74LS244||N7, N11, N15, N19, N23, N27
|-
|B22||Pin 4 of 74LS244||N7, N11, N15, N19, N23, N27
|-
|B23||Pin 6 of 74LS244||N7, N11, N15, N19, N23, N27
|-
|B24||Pin 8 of 74LS244||N7, N11, N15, N19, N23, N27
|-
|B25||Pin 5 of 74F151||B29
|-
|B26||Pin 5 of 74F151||B28
|-
|B27||Pin 5 of 74F151||A29
|-
|B28||Pin 5 of 74F151||A28
|-
|B29||GND||
|-
|B30||GND||
|-
|B31||GND||
|-
|B32||GND||
|}
The ICs:

* A28, A29 = 74F151
* B28, B29 = 74F151
* C29 = 74F174
* L6, L10, L14, L18, L22, L26 = 74LS245
* L7, L11, L15, L19, L23, L27 = 74LS244
* M6, M10, M14, M18, M22, M26 = 74LS245
* M7, M11, M15, M19, M23, M27 = 74LS244
* N6, N10, N14, N18, N22, N26 = 74LS244
* N7, N11, N15, N19, N23, N27 = 74LS244

=CN11=

{|class="wikitable"
!Pin||Connected to||Location
|-
|A1||+5V||
|-
|A2||+5V||
|-
|A3||+5V||
|-
|A4||+5V||
|-
|A5||Pin 4 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A6||Pin 6 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A7||Pin 8 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A8||Pin 13 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A9||Pin 15 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A10||Pin 17 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A11||Pin 2 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A12||Pin 4 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A13||Pin 6 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A14||Pin 8 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A15||Pin 11 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A16||Pin 13 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A17||Pin 15 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A18||Pin 17 of 74LS244||B6, B10, B14, B18, B22, B26
|-
|A19||Pin 11 of 74LS244||N7, N11, N15, N19, N23, N27
|-
|A20||NC?||
|-
|A21||Pin 2 of 74LS244||A6, A10, A14, A18, A22, A26
|-
|A22||Pin 9 of 74F174||C29
|-
|A23||NC?||
|-
|A24||NC?||
|-
|A25||NC?||
|-
|A26||NC?||
|-
|A27||NC?||
|-
|A28||NC?||
|-
|A29||GND||
|-
|A30||GND||
|-
|A31||GND||
|-
|A32||GND||
|-
|&nbsp;|| ||
|-
|B1||+5V||
|-
|B2||+5V||
|-
|B3||+5V||
|-
|B4||+5V||
|-
|B5||Pin 2 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B6||Pin 3 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B7||Pin 4 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B8||Pin 5 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B9||Pin 6 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B10||Pin 7 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B11||Pin 8 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B12||Pin 9 of 74LS245||A7, A11, A15, A19, A23, A27
|-
|B13||Pin 2 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B14||Pin 3 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B15||Pin 4 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B16||Pin 5 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B17||Pin 6 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B18||Pin 7 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B19||Pin 8 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B20||Pin 9 of 74LS245||B7, B11, B15, B19, B23, B27
|-
|B21||Pin 7 of 74F251 ||D2, D3, E2, E3, E28, F28, F29, F30, G28, G29, G30, H28, H29, H30, J28, J29, J30, K28, K29, K30
|-
|B22||Pin 7 of 74F251 + Pin 4 on 74F138||C1, C2, C3, D1, D28, D29, E29, E30, F1, F2, F3, G1, G2, G3, H2, H3, J2, J3, K2, K3, C28

|-
|B23||NC?||
|-
|B24||NC?||
|-
|B25||NC?||
|-
|B26||NC?||
|-
|B27||NC?||
|-
|B28||NC?||
|-
|B29||GND||
|-
|B30||GND||
|-
|B31||GND||
|-
|B32||GND||
|}
The ICs:

* A6, A10, A14, A18, A22, A26 = 74LS244
* A7, A11, A15, A19, A23, A27 = 74LS245
* B6, B10, B14, B18, B22, B26 = 74LS244
* B7, B11, B15, B19, B23, B27 = 74LS245
* C1, C2, C3 = 74F251
* C28 = 74F138
* C29 = 74F174
* D1, D2, D3, D28, D29 = 74F251
* E2, E3, E28, E29, E30 = 74F251
* F1, F2, F3, F28, F29, F30 = 74F251
* G1, G2, G3, G28, G29, G30 = 74F251
* H2, H3, H28, H29, H30 = 74F251
* J2, J3, J28, J29, J30 = 74F251
* K2, K3, K28, K29, K30 = 74F251
* N7, N11, N15, N19, N23, N27 = 74LS244