Difference between revisions of "CXY08 8-Line Asynchronous Multiplexer"
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| − | [[Image:M3119-YA.jpg| | + | [[Image:M3119-YA.jpg|300px|right|thumb|M3119-YA Multiplexer Card]] |
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| − | [[Category: | + | The '''CXY08 8-Line Asynchronous Multiplexer''' is a later [[QBUS]] equivalent to the [[UNIBUS]] [[DH11 asynchronous serial line interface|DH11]] (it is a replacement for the [[DHQ11 asynchronous serial line interface|DHQ11]]). It provided 8 [[EIA RS-232 serial line interface|RS-232]] [[asynchronous serial line]]s. Output used [[Direct Memory Access|DMA]] (with each line having its own [[buffer]] [[pointer]] and count); input used a 256-character [[First-In First-Out buffer|FIFO buffer]]. |
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| + | Like the DHQ11, it can be set (via a switch) to exactly emulate either a [[DHV11 asynchronous serial line interface|DHV11]] or [[DHU11 asynchronous serial line interface|DHU11]]. It has full [[modem]] control. | ||
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| + | ==Implementation== | ||
| + | |||
| + | 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). | ||
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| + | ==Device registers== | ||
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| + | The [[register]]s will depend on whether it is emulating a DHV11 or DHU11. | ||
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| + | ==Further reading== | ||
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| + | * ''CXY08 User's Guide'' (EK-CXY08-UG) - not available online | ||
| + | * ''CXY08 Technical Manual'' (EK-CXY08-TM) - not available online | ||
| + | |||
| + | ==External links== | ||
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| + | * [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)
