Re: Can you MOP boot an install kernel directly?
Johnny Billquist <[email protected]>
| Newsgroups | gmane.os.netbsd.ports.vax |
|---|---|
| Organization | SoftJAR AB |
| Message-ID | <[email protected]> |
On 2025-08-05 20:03, Paul Koning wrote: > > >> On Aug 5, 2025, at 10:02 AM, Johnny Billquist <[email protected]>wrote: >> >> On 2025-08-05 15:31, Paul Koning wrote: >>>> On Aug 4, 2025, at 10:25 PM, Johnny Billquist <[email protected]>wrote: >> The controller is also (all on its own) sending out MOP messages with device information at a regular interval, all the time. Even when an OS is running and using the controller. And the controller keeps a lot of counters and stuff which can also be read out via MOP without involving the PDP-11. Those DEC ethernet controllers do way more than just basic ethernet. > > True for most of the DEC Ethernet controllers, though not the QNA and CNA; for those the job of doing these things falls on the device driver. But those functions are the "MOP Console" protocol, which is actually a different protocol type than "MOP load/dump" though both are specified in the MOP spec (and both share the DDCMP maintenance mode datalink protocol). The QNA is more limited, but it also do then not support remote triggered boots (I think that was the thing it didn't support, but it might have been some other function, but there are some limitations on network booting with a DEQNA). The DELQA do, however, and it does contain similar kind of MOP functionality to the DEUNA/DELUA. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: [email protected] || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol