NEC TECHNOLOGIES, INC.
ESDI DISK CONTROLLER BOARD
Data bus: | 16-bit ISA |
Size: | Three-quarter length, full-height card |
Hard drive supported: | Two ESDI drives |
Floppy drives supported: | None |

CONNECTIONS | |
Function | Location |
4-pin connector - drive active LED | J1 |
20-pin data cable connector | J2 |
20-pin data cable connector | J3 |
34-pin cable control connector - hard drive | J4 |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | Cache enabled | W1/A | open |
| Cache disabled | W1/A | closed | |
| » | 4-byte ECC mode select | W1/B | open |
| 7-byte ECC mode select | W1/B | closed | |
| » | Translation enabled | W1/C | open |
| Translation disabled | W1/C | closed | |
| » | Factory configured - do not alter | W1/D | open |
| » | Physical mode select | W1/E | open |
| 35 sector-per-track mode select | W1/E | closed | |
| » | Alternate sector disabled | W1/F | open |
| Alternate sector enabled | W1/F | closed | |
| » | IRQ14 select | W7 | pins 1 & 2 closed |
| IRQ15 select | W7 | pins 2 & 3 closed | |
| » | Primary address is 1FXh | W12 | open |
| Secondary address is 17Xh | W12 | closed | |