Xref: utzoo comp.sys.ibm.pc:15841 comp.unix.xenix:2319 comp.unix.microport:700
Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!husc6!uwvax!geowhiz!uwspan!root
From: root@uwspan.UUCP (Sue Peru Sr.)
Newsgroups: comp.sys.ibm.pc,comp.unix.xenix,comp.unix.microport
Subject: ATI EGA wonder emulatie - HOW does it work
Message-ID: <3878@uwspan.UUCP>
Date: 24 May 88 19:14:41 GMT
References: <554@4gl.UUCP>
Reply-To: plocher@uwspan.UUCP (John Plocher)
Followup-To: comp.sys.ibm.pc
Organization: U of Wisconsin - Madison  Spanish Department
Lines: 19

+---- honzo@4gl.UUCP (Honzo Svasek) writes in <554@4gl.UUCP> ----
| It seems that there are ATI EGA Wonder users on the net. My original
| question was How This Works. 
| 
| I still want to use this mode, and am looking into how they do it.
+----

The Auto Switch stuff works by patching into int 0x10 and catching the 
mode changes requested, and then setting the correct mode registers.
Since Unix... doesn't have anything remotely like "int 0x10" there isn't
anything for the programmer to hook into.  You would really want to
implement this as ioctl()s to the driver  [ ioctl( egafd, ptr, IOHIRESEGA ); ]
or some such idea.

    -John


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