Date: Wed, 30 May 2007 08:50:23 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-hackers@freebsd.org Cc: rmgls@wanadoo.fr Subject: Re: direct I/O access Message-ID: <200705300850.23375.hselasky@c2i.net> In-Reply-To: <20070529181027.65AD5700009C@mwinf2454.orange.fr> References: <20070529181027.65AD5700009C@mwinf2454.orange.fr>
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On Tuesday 29 May 2007 20:10, rmgls@wanadoo.fr wrote: > hi all, > > Sorry for cross posting, but perhaps hackers is a better list than > multimedia for this topic. > > i am trying to port my old assembler soft for Dos to FreeBSD. > i need to write and read directly to the midi and scsi device. > when i try something like this i receive a sigbus error > > SORRY, i am NOT nor a C nor a FreeBSD expert!!! > all i know is Assembly language! > > i made some search in the devel handbook and did not found the solution. > What is wrong here? > Can you enlight me please? I think you need to open /dev/io before your program can execute I/O instructions. --HPS
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