Booting XXDP+ from a secondary controller - test-drb@ccmp.vtda.org

25 Nov 2007

"Bob Armstrong" <bob at jfcl.com> skrev:

...
    Is there a way to boot XXDP+ from a secondary MSCP
controller (e.g. CSR at
 760334) ? 

   This isn't a PDP-11 boot ROM issue - the -11 (a 11/53+ in this instance)
 ROM has no problem booting from a secondary controller. 

   The issue is that, once started, XXDP doesn't know that it should talk to
 this alternate CSR address and promptly dies. 
I don't think so. As far as I know, XXDP don't take any hints from the boot rom 
code. You need to build a specific XXDP distribution with a monitor using a 
device driver talking to the controller at that alternate address.
Not sure how you would do that. I've never tried getting system device drivers 
in XXDP to talk to devices at other than standard addresses.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol