Subject: Re: Turbochannel Adapter for VAXstation 4000/60
To: John Maier <port-vax@netbsd.org>
From: Matt Thomas <matt@3am-software.com>
List: port-vax
Date: 04/03/2001 11:07:35
At 12:59 PM 4/3/2001 -0500, John Maier wrote:
> > I have been told that there is an adapter available to convert internal 
> slot
> > connector of the VS 4000/60 to a real Turbochannel slot.  Does anyone here
> > have this adapter?  Is it passive or does it contain logic?  If at 
> possible,
> > I'd want to solder my own.
> >
> > Any hints would be greatly appreciated.
>
>I seems to remember hearing of this, but I can't prove it (wish I had my DEC
>catalogs in front of me).  Off hand you're going to have problems since 
>the ROMS
>on TC boards are in MIPS code and I don't think VAX ever made allowances 
>for MIPS
>code like they did for the Alpha DS3000.
>(Yes, the DEC Station 3000 had some magic MIPS boot emulation code so they 
>could
>initalize TC boards)

So do the VS4000/60 and 9x.

>So unless you have a VAX with a MIPS emulator, TC cards with ROMS written 
>for a
>VAXstation or a kernel with TC support for your TC card, it's probably not
>happening.  Though there's nothing from stopping you from trying!

Actually, the TC adapter is a lot than wires since it has to convert the CDAL
like of the VS4000 to a TC.  It also incudes a SGMAP/

>Wouldn't have a TC pin out, would you?

That won't be useful since the TC adapter is a somewhat complex piece of 
hardware.
--
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt/
Cupertino, CA             Disclaimer: I avow all knowledge of this message