CXY08 8-Line Asynchronous Multiplexer: Difference between revisions
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==Implementation== | ==Implementation== | ||
Physically, the CXY08 consisted of a single [[DEC card form factor| | Physically, the CXY08 consisted of a single [[DEC card form factor|quad]] card, the M3119-YA. It connected to a pair of BC19N-12 distribution cable assemblies (4 lines each); each BC19N ends in four male [[EIA RS-232 serial line interface#Connectors|DB-25 connectors]] (DB-25P). | ||
==Device registers== | ==Device registers== | ||
| Line 15: | Line 15: | ||
==Further reading== | ==Further reading== | ||
* EK-CXY08-UG | * ''CXY08 User's Guide'' (EK-CXY08-UG) - not available online | ||
* ''CXY08 Technical Manual'' (EK-CXY08-TM) - not available online | |||
[[Category: QBUS Serial Interfaces]] | ==External links== | ||
* [http://vaxhaven.com/images/f/fe/EK-CXY08-IN-001.pdf CXY08-AF 8-Line Asynchronous Multiplexer Option Installation Guide] (EK-CXY08-IN-001) | |||
* [http://bitsavers.org/pdf/dec/qbus/MP02382_CXY08_sch_Mar87.pdf CXY08 Field Maintenance Print Set] (MP-02382) | |||
[[Category: QBUS Asynchronous Serial Interfaces]] | |||
Latest revision as of 10:05, 17 February 2023
The CXY08 8-Line Asynchronous Multiplexer is a later QBUS equivalent to the UNIBUS DH11 (it is a replacement for the DHQ11). It provided 8 RS-232 asynchronous serial lines. Output used DMA (with each line having its own buffer pointer and count); input used a 256-character FIFO buffer.
Like the DHQ11, it can be set (via a switch) to exactly emulate either a DHV11 or DHU11. It has full modem control.
Implementation
Physically, the CXY08 consisted of a single quad card, the M3119-YA. It connected to a pair of BC19N-12 distribution cable assemblies (4 lines each); each BC19N ends in four male DB-25 connectors (DB-25P).
Device registers
The registers will depend on whether it is emulating a DHV11 or DHU11.
Further reading
- CXY08 User's Guide (EK-CXY08-UG) - not available online
- CXY08 Technical Manual (EK-CXY08-TM) - not available online
External links
- CXY08-AF 8-Line Asynchronous Multiplexer Option Installation Guide (EK-CXY08-IN-001)
- CXY08 Field Maintenance Print Set (MP-02382)
