Difference between revisions of "Digital Ethernet Large-scale-integration UNIBUS Adapter"
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The '''DELUA''' was [[DEC]]'s second [[UNIBUS]] to [[Ethernet]] [[network interface]]. It consisted of one [[DEC card form factor|hex]] board, the M7521. | The '''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: | ||
| + | |||
| + | * [[Motorola MC68000]] [[microprocessor]] | ||
| + | * [[LANCE]] Ethernet chip | ||
| + | * [[DEC part number]] 21-22703-02 (function currently unknown) | ||
| + | |||
| + | The DELUA has 128KB of [[Dynamic RAM|DRAM]] (using 64Kx1 DRAM chips), probably with [[parity]], used for both [[buffer]]s, and also to hold the microprocessor's [[object code|code]]; there is also 16KB of [[ROM]] containing its [[firmware]], which is copied to DRAM on startup, as the latter is faster. | ||
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| + | {{semi-stub}} | ||
==See also== | ==See also== | ||
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* [[DEUNA]], the DELUA's predecessor | * [[DEUNA]], the DELUA's predecessor | ||
| − | + | ==Further reading== | |
| + | |||
| + | * ''DELUA Technical Description'' (EK-DELUA-TD) | ||
| + | * ''DELUA Field Maintenance Print Set'' (MP-01787) | ||
| + | |||
| + | ==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/firmware/DELUA/ DELUA] - firmware | ||
[[Category: UNIBUS Network Interfaces]] | [[Category: UNIBUS Network Interfaces]] | ||
Revision as of 01:38, 5 November 2021
The 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
