ISA 16-bit slot extends the 8-bit ISA with an additional 36-pin connector section for 16-bit data bus and 24-bit address bus. Used in IBM AT and 286/386/486 clones from 1984 to the late 1990s.
| Pin | Name | Function | Type |
|---|---|---|---|
| A1 | /IOR | I/O read | I/O |
| B1 | GND | Ground | GND |
| B3 | +5V | 5V power | PWR |
| C1 | SBHE | System bus high enable | I/O |
| C2 | A23 | Address bit 23 | I/O |
| C3 | A22 | Address bit 22 | I/O |
| C18 | D8 | Data bus bit 8 | I/O |
| C19 | D9 | Data bus bit 9 | I/O |
| D1 | /MEMCS16 | 16-bit memory cycle | I/O |
| D2 | /IOCS16 | 16-bit I/O cycle | I/O |
ISA 16-bit slot extends the 8-bit ISA with an additional 36-pin connector section for 16-bit data bus and 24-bit address bus. Used in IBM AT and 286/386/486 clones from 1984 to the late 1990s.