RL01 drive select plug and power supply questions

[Johnny Billquist]

On Thu, 20 Oct 2005, Allison <ajp166 at bellatlantic.net> wrote:

> >Subject: Re: RL01 drive select plug and power supply questions
> >   From: David Betz <dbetz at xlisper.mv.com>
> >   Date: Thu, 20 Oct 2005 18:26:02 -0400
> >     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
> >
> >Thanks for your reply. I guess I'm okay with power even if I leave in
> >the DHV11 as it seems my BA11-N has been upgraded to a H7861 power
>
> Unless you need the IO I'd pull it anyway. The system will run cooler
> and I doubt you have need for the lines.  DHV11 is a MUX and you need
> the chassis kit to break out all the serial lines.  Most OSs for PDP11
> don't use it (system build time option) and the DLV11J is easier to use
> and program.  The DHV11 cannot be used for a console either.

I think I'll slightly disagree with you here.
While all you say is essentially true, the DLV11 is a tremendour burden on
the system compared to the DHV11. So if you actually want to run serial
connections to a machine, keep the DHV11, and don't use the console more
than absolutely neccesary.

Big difference between DMA and interrupts you know...

	Johnny

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