>From: "Chris G. Demetriou" <cgd@postgres.berkeley.edu>
>Date: Tue, 12 Apr 94 21:21:43 -0700
>
>> For those of us with mach32 based cards, the com4 support makes the default
>> kernels useless.
>
>why?  I don't have a mach32-based card, and am not going to buy one to
>find out why they don't work with kernels w/com4...

The Mach32 emulates an IBM 8514A display.  The 8514A maps some of its
registers to I/O ports 0x2e8 to 0x2ed, which overlap the I/O ports for
COM4 (0x2e8 to 0x2ef).  I can give more details if you need them.

Owners of Mach8 based cards will have the same problem, as it also
emulates an 8514A.
-- 
Mike Long                                         Mike.Long@Analog.com
VLSI Design Engineer                              voice: (617)461-4030
Analog Devices, SPD Div.                            FAX: (617)461-3010
Norwood, MA 02062                            *this = !opinion(Analog);

------------------------------------------------------------------------------