Digital ETHERNET Q-Bus Network Adapter: Difference between revisions
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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. | 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. | ||
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) | |||
==See also== | ==See also== | ||
Revision as of 01:55, 1 April 2021
The 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:
- Signetics SCN8051HCCN40 8-bit microcontroller
- Fujitsu MB8795A LAN Node Controller
- DEC DC336 QBUS Interface/DMA Controller (DEC part number 21-21427-01)
See also
- DELQA Ethernet QBUS Adapter, the DEQNA's replacement
Further reading
- DEQNA ETHERNET User's Guide (EK-DEQNA-UG-001)
