MVS MV-6 daughter board connectors pinouts

Ongoing Reverse Enginering by Pudrik.

MV6 Daughter Board PCB connectors pinouts:

=CN8=

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=

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=

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=

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