DS11 Multiple Line Synchronous Interface

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

• DU11 synchronous serial line interface

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