TU-58s (was Re: Some progress with my PDP-11/73 system)

[Allison]

>
>Subject: Re: TU-58s (was Re: Some progress with my PDP-11/73 system)
>   From: "Jerome H. Fine" <jhfinedp3k at compsys.to>
>   Date: Sun, 15 Apr 2007 21:43:19 -0400
>     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
> >Allison wrote:
>
>>Sounds nice.  I have a few BA-11VA (four dual width slots)
>>and it's a challange to put enough boards to make a bootable
>>viable  sytem in that.  An 11/23, 256k ram, DLV11J and a Rom
>>card was full house and for storage the only choice was TU58
>>or Tu58 emulation (requires bukly balky PC).
>>
>Jerome Fine replies:
>
>For this example (I assume this is an M8186), there
>were dual MFM and ESDI controllers which have boot
>ROMs for the hard drive (non-DEC of course).  I still
>use my dual ESDI controller.  I no longer have the
>MFM controller, but that was all the VT103 originally
>had which was essential to run and boot an operating
>system such as RT-11.

I have a few contollers (dual width) that are Both MFM and 
SCSI that sound like those.  

I keep putting it on my list of projects to do a simple IDE
for QBUS.  the design goals would be dual width, boot rom on 
board and uses a 2.5" drive on the card.  So far I've only 
seen one Qbus IDE and it was lacking for software. Software 
driver for that hardware is for RT11 alone is a bit of a 
project as I'd need both the FB and SJ versions of the 
driver. 


Allison