MFM or ESDI QBUS controller for one PDP-11/23 PLUS

[Allison]

>
>Subject: Re: MFM or ESDI QBUS controller for one PDP-11/23 PLUS
>   From: "Glen Slick" <glen.slick at gmail.com>
>   Date: Tue, 09 Oct 2007 11:55:21 -0700
>     To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
>
>On 10/9/07, Allison <ajp166 at bellatlantic.net> wrote:
>> The only MSCP boards I've used that didn't require breakout were
>> SCSI.
>>
>
>I have at least three Q-bus MSCP ESDI controllers that have standard
>20-pin & 34-pin IDC header ESDI connectors, no breakout required.
>Emulex QD21, Dilog DQ696, Sigma SDC-RQD11.  They are hard disk only
>though, so maybe in general controllers with floppy support do require
>breakout adapters.

That may be the difference as all of my MSCP with RQDXn replacements
need a breakout or a funky cable to do it. I do not have anything 
for ESDI.  


Allison


>I also have an Andromeda ESDC Q-Bus ESDI controller which I haven't
>been able to use yet as I am lacking documentation on how to configure
>it.  Anyone have a manual?  I don't see any Andromeda manuals at all
>on bitsavers.
>
>-Glen