Hi Tony, The floppy controller DEFINITELY doesn't do MFM as standard. A chap in the UK Sirius User Group once told me that there was a board in development which would replace the standard floppy controller to allow the machine to read and write IBM format (360K and 1.2Mb) discs. He claimed to have one of the prototypes and that it never made it to the market - probably because the new controller wouldn't read/write the old style GCR discs. :-( TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)virgin.net | peter.pachla(a)vectrex.freeserve.co.uk | peter.pachla(a)wintermute.free-online.co.uk | www.wintermute.free-online.co.uk --