Difference between revisions of "CXY08 8-Line Asynchronous Multiplexer"
From Computer History Wiki
m (typo) |
(New cat, error) |
||
| Line 7: | Line 7: | ||
==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 19: | Line 19: | ||
[[Category: QBUS Serial Interfaces]] | [[Category: QBUS Serial Interfaces]] | ||
| + | [[Category: DEC Asynchronous Serial Interfaces]] | ||
Revision as of 01:48, 17 August 2022
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
- EK-CXY08-UG, CXY08 User's Guide
- EK-CXY08-TM, CXY08 Technical Manual
