Difference between revisions of "Digital ETHERNET Q-Bus Network Adapter"

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[[Image:DEQNA.jpg|250px|right|thumb|DEQNA M7504 board]]
 
[[Image:DEQNA.jpg|250px|right|thumb|DEQNA M7504 board]]
  
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The '''DEQNA''' was [[Digital Equipment Corporation|DEC]]'s first [[QBUS]] to [[Ethernet]] [[network interface]]. It was a [[DEC card form factor|dual]] card, the M7504.
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The '''Digital ETHERNET Q-Bus Network Adapter''' (short, and usual, name '''DEQNA''') was [[Digital Equipment Corporation|DEC]]'s first [[QBUS]] to [[Ethernet]] [[network interface]]. It was a [[DEC card form factor|dual]] card, the M7504.
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To pack all the functionality required onto a dual card (the early [[DEUNA]] takes two hex cards to hold the equivalent functionality), a number of complex [[integrated circuit|chips]] are used:
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* Signetics SCN8051HCCN40 8-bit [[microcontroller]]
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* Fujitsu MB8795A [[local area network|LAN]] Node Controller
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* DEC DC336 QBUS Interface/[[Direct Memory Access|DMA]] Controller ([[DEC part number]] 21-21427-01)
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==See also==
 
==See also==
  
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* [[DELQA Ethernet QBUS Network Adapter]], the DEQNA's replacement
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* [[DIGITAL Ethernet Local-Area-Network to Q-bus Adapter]], DELQA, the DEQNA's replacement
  
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==Further reading==
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==External links==
  
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* DEQNA ETHERNET User's Guide (EK-DEQNA-UG-001)
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* [http://www.bitsavers.org/pdf/dec/qbus/EK-DEQNA-UG-001.pdf DEQNA ETHERNET User's Guide] (EK-DEQNA-UG-001)
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* [http://www.bitsavers.org/pdf/dec/qbus/MP01811_CKDEQNA_Qbus_Ethernet_Cable.pdf QBUS to Ethernet Cable Kit] (MP-01811)
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{{semi-stub}}
 
  
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[[Category: DEC Boards]]
 
 
[[Category: QBUS Network Interfaces]]
 
[[Category: QBUS Network Interfaces]]
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[[Category: Ethernet Interfaces]]

Latest revision as of 23:31, 17 August 2022

DEQNA M7504 board

The Digital ETHERNET Q-Bus Network Adapter (short, and usual, name DEQNA) was DEC's first QBUS to Ethernet network interface. It was a dual card, the M7504.

To pack all the functionality required onto a dual card (the early DEUNA takes two hex cards to hold the equivalent functionality), a number of complex chips are used:

See also

External links

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