Subj : IOPL code with Watcom C To : Vitus Jensen From : Jonathan de Boyne Pollard Date : Tue Nov 28 2000 05:55 pm VJ> mov eax,INB ; 0x000E0000 If that really *isn't* a call gate (double-check it) then I suspect a linker problem. Dump the executable and look at the fixups for the page containing that particular piece of code. ¯ JdeBP ® --- FleetStreet 1.22 NR * Origin: JdeBP's point, using Squish (2:257/609.3) .