/* Imported from Wayback Machine
Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:spx-mpu:mpuconn:array4x16 Snapshot date: 2025-06-14 Generator : wayback-archiver
*/
4×16 Test Pads
Note: Row D is closest to the edge of board; pin 1 is closest to the hexadecimal rotary switch.
| Name | Comment | |
| A1 | D12 | Data 12 |
| A2 | D13 | Data 13 |
| A3 | D14 | Data 14 |
| A4 | D15 | Data 15 |
| A5 | nHALT | 68302 nHALT |
| A6 | nUDS | upper data strobe |
| A7 | nLDS | lower data strobe |
| A8 | R/W | read-write |
| A9 | nAS | Address strobe |
| A10 | 3.68MHz | 3.68MHz clock |
| A11 | CLKCTRL | Enable 3.68MHz clock to 68692 |
| A12 | ||
| A13 | ||
| A14 | ||
| A15 | Ground | |
| A16 | Ground | |
| B1 | D0 | Data 0 |
| B2 | D1 | Data 1 |
| B3 | D2 | Data 2 |
| B4 | D3 | Data 3 |
| B5 | D4 | Data 4 |
| B6 | D5 | Data 5 |
| B7 | D6 | Data 6 |
| B8 | D7 | Data 7 |
| B9 | D8 | Data 8 |
| B10 | D9 | Data 9 |
| B11 | D10 | Data 10 |
| B12 | D11 | Data 11 |
| B13 | ||
| B14 | Ground | |
| B15 | Ground | |
| B16 | Ground | |
| C1 | A13 | Address 13 |
| C2 | A14 | Address 14 |
| C3 | A15 | Address 15 |
| C4 | A16 | Address 16 |
| C5 | A17 | Address 17 |
| C6 | A18 | Address 18 |
| C7 | A19 | Address 19 |
| C8 | A20 | Address 20 |
| C9 | nCS1 | To nCS1 of 68302 via 330 series resistor |
| C10 | nCS2 | To nCS2 of 68302 via 330 series resistor |
| C11 | nCS3 | To nCS3 of 68302 via 330 series resistor |
| C12 | nCS0 | To nCS0 of 68302 via 330 series resistor |
| C13 | ||
| C14 | Ground | |
| C15 | Ground | |
| C16 | Ground | |
| D1 | A1 | Address 1 |
| D2 | A2 | Address 2 |
| D3 | A3 | Address 3 |
| D4 | A4 | Address 4 |
| D5 | A5 | Address 5 |
| D6 | A6 | Address 6 |
| D7 | A7 | Address 7 |
| D8 | A8 | Address 8 |
| D9 | A9 | Address 9 |
| D10 | A10 | Address 10 |
| D11 | A11 | Address 11 |
| D12 | A12 | Address 12 |
| D13 | ||
| D14 | ||
| D15 | Ground | |
| D16 | Ground |