Digital Ethernet Large-scale-integration UNIBUS Adapter: Difference between revisions
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==External links== | ==External links== | ||
* [http://www.bitsavers.org/pdf/dec/unibus/EK-DELUA-UG-002.pdf DELUA User's Guide] (EK-DELUA-UG-002) | * [http://www.bitsavers.org/pdf/dec/unibus/DELUA/EK-DELUA-UG-002.pdf DELUA User's Guide] (EK-DELUA-UG-002) | ||
* [http://www.bitsavers.org/pdf/dec/unibus/firmware/DELUA/ DELUA] - firmware | * [http://www.bitsavers.org/pdf/dec/unibus/firmware/DELUA/ DELUA] - firmware | ||
[[Category: UNIBUS Network Interfaces]] | [[Category: UNIBUS Network Interfaces]] | ||
[[Category: Ethernet Interfaces]] | [[Category: Ethernet Interfaces]] | ||
Latest revision as of 13:00, 3 October 2026
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:
- Motorola MC68000 microprocessor
- LANCE Ethernet chip
- DEC part number 21-22703-02 (function currently unknown)
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
- DELUA User's Guide (EK-DELUA-UG-002)
- DELUA - firmware
