/* Imported from Wayback Machine
Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:spx-mpu:mpuconn:din96 Snapshot date: 2025-06-14 Generator : wayback-archiver
*/
96-pin DIN 41612 connector
| Pin | Function | Comments |
| C1 | Power In | 28V in, cathode of CRB12-2 |
| C2 | 82C55PC0 | 82C55 PC0 via 1K resistor |
| C3 | Invert of Green LED | Low when green LED lit, High when green LED is off |
| C4 | 82C55PC1 | 82C55 PC1 via resistor |
| C5 | 68302TCLK+RS485 | 68302 TCLK1+ |
| C6 | 68692OP3-RS232 | driven by OP3 of 68692 |
| C7 | 68692TxDB-RS232 | driven by 68692-13 TxDB |
| C8 | 68692OP1-RS232 | driven by OP1 of 68692 |
| C9 | 68692-IP3-RS232 | goes to 68692-3 (IP3) |
| C10 | GND | Digital Ground |
| C11 | 686892RxDB-RS232 | driven by 68692-11 RxDB |
| C12 | To 68692-5 (IP1) | |
| C13 | 68302nIACK1 | To 68302-110(nIACK1) with 10K pullup |
| C14 | 82C55PA6 | 82C55 PA6 |
| C15 | GND | Digital Ground |
| C16 | 68302nIACK7 | To 68302-108(nIACK7) with 10K pullup |
| C17 | 68302nIACK6 | To 68302-109(nIACK6) with 10K pullup |
| C18 | GND | Digital Ground |
| C19 | 82C55PC5 | driven by PC5 of 82C55-14 |
| C20 | GND | Digital Ground |
| C21 | TPA7 | To TPA7 test point and Vpp (pin 1) of UB2 & UB3 |
| C22 | 82C55PC6 | driven by PC6 of 82c55-13 |
| C23 | TP11-1 | driven by nPBRST of UI2-14 |
| C24 | 82C55PC7 | driven by PC7 of 82c55-11 |
| C25 | GND | Digital Ground |
| C26 | 82C55PA4 | 82C55 PA4 |
| C27 | discrete In, D9 | 10K resistor isolation and pull up |
| C28 | discrete In, D11 | 10K resistor isolation and pull up |
| C29 | discrete In, D13 | 10K resistor isolation and pull up |
| C30 | discrete In, D15 | 10K resistor isolation and pull up |
| C31 | 82C55PA7 | 82C55 PA7 |
| C32 | Power In | 28V in, annode of CRB12-3 |
| B1 | GND | Digital Ground |
| B2 | 68302RxD1+RS485 | 68302 RxD1+ |
| B3 | 68302RxD1-RS485 | 68302 RxD1- |
| B4 | 82C55PC4 | driven by PC4 via resistor network |
| B5 | 68302TCLK-RS485 | 68302 TCLK- |
| B6 | 68302RxD2-RS485 | to 68302 RxD2- |
| B7 | 68302RxD2+RS485 | to 68302RxD2+ |
| B8 | 68302TxD2+RS485 | driven by 68302-54 TxD2+ |
| B9 | 68302TxD2-RS485 | driven by 68302-54 TxD2- |
| B10 | GND | Digital Ground |
| B11 | 82C55PA0 | 82C55 PA0 |
| B12 | 82C55PA1 | 82C55 PA1 |
| B13 | 82C55PA2 | 82C55 PA2 |
| B14 | 82C55PA3 | 82C55 PA3 |
| B15 | GND | Digital Ground |
| B16 | 82C55PA5 | 82C55 PA5 |
| B17 | 82C55PB6 | 82C55 PB6 |
| B18 | 82C55PB7 | 82C55 PB7 |
| B19 | 82C55PB4 | 82C55 PB4 |
| B20 | GND | Digital Ground |
| B21 | 82C55PB5 | 82C55 PB5 |
| B22 | 82C55PB2 | 82C55 PB2 |
| B23 | 82C55PB3 | 82C55 PB3 |
| B24 | 82C55PB1 | 82C55 PB1 |
| B25 | GND | Digital Ground |
| B26 | 68692IP5-RS232 | to IP5 of 68692 |
| B27 | discrete In, D8 | 10K resistor isolation and pull up |
| B28 | discrete In, D10 | 10K resistor isolation and pull up |
| B29 | discrete In, D12 | 10K resistor isolation and pull up |
| B30 | discrete In, D14 | 10K resistor isolation and pull up |
| B31 | discrete In | Complex ckt |
| B32 | NC | use this pin to bring in +5V |
| A1 | Power In | 28V in, annode of CRB12 |
| A2 | 68302TxD1+RS485 | driven by 68302 TxD1+ &loopback |
| A3 | 68302TxD1-RS485 | driven by 68302 TxD1- &loopback |
| A4 | 82C55PC3 | to 82C55-19(PC3) via 1K resistor |
| A5 | GND | Digital Ground |
| A6 | 68692RxDB+RS485 | 68692 RxDB+ |
| A7 | 68692RxDB-RS485 | 68692 RxDB- |
| A8 | 68692TxDB+RS485 | 68692 TxDB+ |
| A9 | 68692TxDB-RS485 | 68692 TxDB- |
| A10 | GND | Digital Ground |
| A11 | discrete In | Complex ckt |
| A12 | discrete In | Complex ckt |
| A13 | discrete In | Complex ckt |
| A14 | discrete In | Complex ckt |
| A15 | GND | Digital Ground |
| A16 | discrete In | Complex ckt |
| A17 | discrete In | Complex ckt |
| A18 | discrete In | Complex ckt |
| A19 | discrete In | Complex ckt |
| A20 | GND | Digital Ground |
| A21 | 68302PA12-RS232 | driven by 68302-68(PA12) |
| A22 | 68302TxD3-RS232 | driven by TxD3 of 68302 part of complex network |
| A23 | 68302nRTS3-RS232 | driven by nRTS3 of 68302 |
| A24 | 68302CD3-RS232 | go to 68302-77(CD3) |
| A25 | GND | Digital Ground |
| A26 | discrete In | Complex ckt |
| A27 | 68302nCTS3-RS232 | to 68302 nCTS3 |
| A28 | NC | |
| A29 | 82C55PB0 | PB0 of 82C55 |
| A30 | 82C55PC2 | to 82C55-18(PC2) via 1K resistor |
| A31 | 68302TCLK3-RS232 | driven by TCLK3 of 68302 part of complex network |
| A32 | Power In | 28V in, annode of CRB12-1 |