PDP-11/23 Debugging

Ben Sinclair bensinc at gmail.com
Mon Nov 17 14:52:09 CST 2014

Thanks! I'll pull the jumper from W4 and leave the rest the way it is. I
believe with that it will be under software control.

On Mon, Nov 17, 2014 at 2:47 PM, Glen Slick <glen.slick at gmail.com> wrote:

> On Nov 17, 2014 12:38 PM, "Ben Sinclair" <bensinc at gmail.com> wrote:
> >
> > Now I'm confused again! If I setup the BDV11 to control the LTC
> interrupt,
> > should I have W4 in or out?
> >
> Yeah, I think I was confused about that. I think you would normally have
> the BDV11 configured so that the BEVENT bus signal is under software
> control so that you don't need to use the front panel Aux switch to disable
> BEVENT. But you would normally always have W4 removed on the M8186 so that
> interrupts occur when BEVENT is enabled on the bus. The exception would be
> if you had something like an M8016 KPV11 which generates its own LTC
> interrupts.

Ben Sinclair
ben at bensinclair.com

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