View source for Digital ETHERNET Q-Bus Network Adapter

[[Image:DEQNA.jpg|250px|right|thumb|DEQNA M7504 board]]

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.

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:

* Signetics SCN8051HCCN40 8-bit [[microcontroller]]
* Fujitsu MB8795A [[local area network|LAN]] Node Controller
* DEC DC336 QBUS Interface/[[Direct Memory Access|DMA]] Controller ([[DEC part number]] 21-21427-01)

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==See also==

* [[DIGITAL Ethernet Local-Area-Network to Q-bus Adapter]], DELQA, the DEQNA's replacement

==External links==

* [http://www.bitsavers.org/pdf/dec/qbus/EK-DEQNA-UG-001.pdf DEQNA ETHERNET User's Guide] (EK-DEQNA-UG-001)
* [http://www.bitsavers.org/pdf/dec/qbus/MP01811_CKDEQNA_Qbus_Ethernet_Cable.pdf QBUS to Ethernet Cable Kit] (MP-01811)

[[Category: QBUS Network Interfaces]]
[[Category: DEC Network Interfaces]]
[[Category: Ethernet Interfaces]]