[rescue] Minimum neccessary to saturate (was: Ultra Enterprise 150, A5000)

Joshua Boyd jdboyd at jdboyd.net
Wed Apr 21 08:53:28 CDT 2004

On Fri, Apr 16, 2004 at 09:39:47PM +0200, Gerhard Lenerz wrote:

> > On the other hand, it would be quite amusing to stick a VME SBC with USB
> > in there and write a driver to talk back and forth.  I wonder how hard
> > it is to write a VME driver for Irix.
>   I don't know how hard it is and how complete the documentation is,
>   but there is a chapter on VME Device Drivers in the Device Driver
>   Programmer's Guide:
>   http://docs.sgi.com/library/tpl/cgi-bin/browse.cgi?coll=0650&db=bks&cmd=toc&pth=/SGI_Developer/DevDriver_PG&html=1&srch=device%20driver%20handbook
>   I have no clue on designing own hardware and writing drivers for it,
>   but wouldn4t a more general approach rather use SCSI than VME to
>   bridge USB to an old system?

I don't know.  My boss was telling me it is relatively easy to write
user land SCSI drivers on Irix, but I haven't really looked into it.

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