Difference between revisions of "Digital Ethernet Large-scale-integration UNIBUS Adapter"

From Computer History Wiki
Jump to: navigation, search
(bried desc, chips)
m (formal names)
Line 1: Line 1:
 
[[Image:m7521.jpg|thumb|right|250px|M7521]]
 
[[Image:m7521.jpg|thumb|right|250px|M7521]]
  
The '''DELUA''' was [[DEC]]'s second [[UNIBUS]] to [[Ethernet]] [[network interface]]. It consisted of one [[DEC card form factor|hex]] board, the M7521.
+
The '''Digital Ethernet Large-scale Integration UNIBUS Adapter''' (short, and usual, name '''DELUA''') was [[DEC]]'s second [[UNIBUS]] to [[Ethernet]] [[network interface]]. It consisted of one [[DEC card form factor|hex]] board, the M7521.
  
 
A number of complex [[integrated circuit|chips]] are used:
 
A number of complex [[integrated circuit|chips]] are used:
Line 15: Line 15:
 
==See also==
 
==See also==
  
* [[DEUNA]], the DELUA's predecessor
+
* [[Digital Ethernet UNIBUS Network Adapter|DEUNA]], the DELUA's predecessor
  
 
==Further reading==
 
==Further reading==

Revision as of 02:20, 5 November 2021

M7521

The Digital Ethernet Large-scale Integration UNIBUS Adapter (short, and usual, name DELUA) was DEC's second UNIBUS to Ethernet network interface. It consisted of one hex board, the M7521.

A number of complex chips are used:

The DELUA has 128KB of DRAM (using 64Kx1 DRAM chips), probably with parity, used for both buffers, and also to hold the microprocessor's code; there is also 16KB of ROM containing its firmware, which is copied to DRAM on startup, as the latter is faster.

See also

  • DEUNA, the DELUA's predecessor

Further reading

  • DELUA Technical Description (EK-DELUA-TD)
  • DELUA Field Maintenance Print Set (MP-01787)

External links