Maybe this source code XT PC help to resolve problem: http://xtideuniversalbios.googlecode.com/svn/trunk/XTIDE_Universal_BIOS/Src/Initialization/FloppyDrive.asm -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.seabios.org/pipermail/seabios/attachments/20131214/2cef161d/attachment.html>