IBM PC Connecting to DECNET

Antonio Carlini a.carlini at
Fri Jun 3 07:46:50 CDT 2022

On 03/06/2022 03:09, Rick Murphy via cctalk wrote:
> On 6/1/2022 12:49 AM, Glen Slick via cctalk wrote:
>> No one ever called it a "Digital Ethernet Personal Computer Bus
>> Adapter", just a DEPCA. I never previously knew that there was any
>> meaning behind the DEPCA name.
> Yes, that's what it meant. "DELNI" - Digital Ethernet Local Network 
> Interface. "DESTA" - Digital Ethernet Station Termination Adapter. 
> DELQA - Digital  Ethernet Local Q-Bus Adapter (this one probably means 
> something else. Working?). DEMPR - Multi Port Repeater. DEREP - 
> Repeater.  And so forth. Yeah, nobody spelled it out, but those DExxx 
> names usually meant what the device was. DEBNT, DEUNA, DEQNA. Same 
> naming convention. I'm probably missing several.
>     -Rick
The DEPCA manual 
says "DIGITAL Ethernet Personal Computer Adapter", without "Bus".

DELQA was "DIGITAL Ethernet Local-Area-Network to Q-bus Adapter" 
according to its user guide.

It's predecessor, the DEQNA, was "Digital ETHERNET Q-Bus Network 
Adapter", according to its user guide, or "broken", according to most 
people :-)


Antonio Carlini
antonio at

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