Difference between revisions of "CXY08 8-Line Asynchronous Multiplexer"
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==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 | |
| − | [[ | + | ==External links== |
| − | [[Category: | + | |
| + | * [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 11:05, 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)
