<html> <head> <META NAME="copyright" CONTENT="Copyright 2001 by MandrakeSoft S.A."> <META NAME="Author" CONTENT="Kevin Lawton"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html;CHARSET=iso-8859-1"> <TITLE>FPU emulation</TITLE> </head> <body text="#000000" bgcolor="#ececec" link="#3333cc" vlink="#666666"> <center><h1>FPU emulation</h1></center> <hr> You can now compile bochs to work with the FPU (Floating Point Unit) emulation which is included as part of the Linux kernel. Linux (and some other software packages) use <a href="http://www.linuxsupportline.com/~billm/"> wm-FPU-emu, written by Bill Metzenthen </a>. I modified the code to interface with bochs, with permission from Bill. <p> To compile bochs to use this FPU emulator, grab the wm-FPU-emu package from the bochs <A HREF="ftp://bochs.com/pub/">FTP site</A>, and extract it somewhere. This will create a directory called "math-emu". Supply the path to this directory to the configure command in bochs, by including the option "--enable-fpu=/path/math-emu", where path is wherever you extracted it. <p> Error reporting needs more work. Though, I have got the paranoia tests to run on Linux running inside of bochs linked with wm-FPU-emu. They ran the same as on a real Linux/Pentium machine. <p> -Kevin </body> </html>
