Path: utzoo!attcan!uunet!husc6!mailrus!uflorida!gatech!hubcap!oolidjr
From: oolidjr@hubcap.UUCP (Joe Moll)
Newsgroups: comp.sys.ibm.pc
Subject: Usable I/O Address range on the PC bus ...
Keywords: Limited to addresses up to 0x0400 only??
Message-ID: <3552@hubcap.UUCP>
Date: 15 Nov 88 22:50:39 GMT
Distribution: na
Organization: Clemson University, Clemson, SC
Lines: 16

What is the deal with the usuable I/O address range on the IBM PC bus??

I read in a manual that the addresses above 0x0400 were unusable?  Is
this true??  I don't see how this could be, since all the address lines
and control signals off the 8088 are available on the bus.

Could someone shed some light on this please???  I was about to wire
a project into I/O address 0x0400 and it needs to be done soon.

Thanx Much ...
Joe

                   /=----------+^ jlmoll@clemson.bitnet
Joe Moll  --------=\  Internet |  oolidjr@hubcap.clemson.edu
Clemson University  \     UUCP |  {pick a hub}!hubcap!oolidjr
Clemson, SC   \     |\=--------+--------/`