Toggling in PDP-11 Bootstraps...

From: Aaron Christopher Finney <af-list_at_wfi-inc.com>
Date: Tue Mar 21 16:27:16 2000

I should have been a little more specific with my description. I have the
peripheral boards sitting around me and am just playing with one at a time
for fun. I do have a bootable system already, but I'm just playing with
them for the fun/experience...

I double checked to make sure that they had unique CSR
assignments...besides the SLU, will the system expect any of the
peripherals to have standard addresses/vectors?

I'll try to push the bootstrap via serial tonight, though I'm using a WYSE
60 and it's pretty easy to type it out.

Side note: does anyone know how to send a plain LF with a WYSE 60, without
changing the personality to a different terminal? My setup cycles through
like this for assigning the Enter key: CR...CRLF...CR...TAB...I got around
it last night by switching personalities to one of the DG modes.

Thanks,

Aaron


On Tue, 21 Mar 2000 healyzh_at_aracnet.com wrote:

> > might save me a little time/frustration? I'm playing around with some
> > parts to try to learn more about how the system works, and here's what
> > I've got:
> >
> > 22bit qbus backplane
> > 11/73 cpu
> > 1 meg ram
> > various device interface cards (Dilog SQ706A, RQDX3, Emulex TC03, RXV21
> > clone)
> >
> > I'd like to be able to set up the simplest system possible and try to
> > toggle in a bootstrap. I've played with the ones on metalab (RX01, MSCP)
>
> It sounds like you've got about as messed up a setup there as I've got. I'm
> guessing you have the dual height, and not the quad height /73 CPU board.
>
> You mention problems with booting a SCSI disk off the Dilog controller.
> Have you verified tha the you don't have boards sitting at the same CSR?
> For that matter why do you have the RQDX3 in the system (in my case I use it
> for the RX50's).
>
> Do you have any 3rd party disk controllers with a bootstrap built in?
> That's how I boot my system.
>
> Just to give you an idea of how messed up my system is, I've got a Viking
> SCSI, WQESD/04, and a RQDX3. The Viking has my disks and tape, the RQDX3
> the floppy, and alll the WQESD/04 is currently doing is booting the system!
> In fact by default the WQESD boots DU0: on the Viking board.
>
> A good goal for you would be to get everything working under RT-11. That's
> a great way to learn.
>
> BTW, if you don't have a bootable 3rd party controller, or the DEC board
> with the boot ROMs, I hope you've figured out how to send the bootstrap
> over a serial line from a PC (I never did).
>
> Zane
>
Received on Tue Mar 21 2000 - 16:27:16 GMT