'386 Unix Wars

[Sean Eric Fagan]

In article <1990Dec21.223449.14660 at unixland.uucp> bill at unixland.uucp (Bill Heiser) writes:
>Why is this?  Does this mean (do you think?) that if I up my machine to
>16MB, my AST 4-port board will not work?

It really depends.  If a card puts it's data space in the "magic" 340k that
lives between 640k and 1Mb, then it's safe.  However, if it puts it at, oh,
say, 0xc00000, then you cannot put in physical memory that will conflict
with it.  (That address, incidently, is where my ancient Cornerstone Monitor
puts its frame buffer; really nice, except it doesn't work 8-(.)  I've seen
indications that one video card puts its frame buffer at 0xd0000000; as you
may suppose, that is an EISA card.  Since ISA is limited to 24 address bits,
you can see the problem.

-- 
Sean Eric Fagan  | "I made the universe, but please don't blame me for it;
sef at kithrup.COM  |  I had a bellyache at the time."
-----------------+           -- The Turtle (Stephen King, _It_)
Any opinions expressed are my own, and generally unpopular with others.