Bell Tech W.G.E. use with "sissy" unix

[James Van Artsdalen]

In article <283 at belltec.UUCP>, dar at belltec.UUCP (Dimitri Rotow) wrote:

> The sensible thing to do (in a box designed for UNIX use as well as
> DOS) is to have some means of disabling the cache for accesses within
> a given range or above a given address.  Many of the higher
> performance '386 cache boxes now have that capability.  Other
> companies (for example Dell) will send you a special PAL that enables
> cache for a range less than the full 16 MB address space.

On the System 310 and the System 325 (announced in Canada a week or
two ago), one may prevent caching by accessing the address space with
the high order bit set in the address.  In other words, instead of
accessing 0x123456, access 0x80123456.  You get the same mapping onto
the peripheral bus but no caching.
-- 
James R. Van Artsdalen   ...!uunet!utastro!bigtex!james   "Live Free or Die"
Home: 512-346-2444 Work: 338-8789        9505 Arboretum Blvd Austin TX 78759