DS11 Multiple Line Synchronous Interface
From Computer History Wiki
The DS11 Multiple Line Synchronous Interface is an early synchronous serial line interface for the UNIBUS; it can handle up to 16 lines.
It consists of a master line scanner, and up to four adapters, each of which can handle up to four lines. Physically, it is a large backplane, mounted in a 19" cabinet such as an H950, along with an DEC indicator panel; each line has a separate quad M7110 Line Control Module.
Registers
| Register | Abbreviation | Address |
|---|---|---|
| Receiver Status Register | RxCSR | 775xx0 |
| Receiver Data Buffer Register | RxDBUF | 775xx2 |
| Transmitter Status Register | TxCSR | 775xx4 |
| Transmitter Data Buffer Register | TxDBUF | 775xx6 |
Line addresses:
- Line 0: 775400-775406
- ...
- Line 15: 775570-775576
See also
Further reading
- DS11 Multiple Line Synchronous Interface Maintenance Manual (DEC-00-DS11-DB; not available online, but in fiche)
External links
- DECsystem-10 System Reference Manual - documents the DS11 registers in Appendix C (pp. 370-371 of the PDF)
- M7110
