With the MPI plugged to the CoCo 3 do a PRINT PEEK(&HFF90). You'll get a 126 if the MPI has been upgraded and a 255 if not upgraded. -- RP On Sat, Mar 17, 2012 at 10:32 AM, Bill <cwgordon at carolina.rr.com> wrote: > Is this MPI coco3 ready? > > > -- > Coco mailing list > Coco at maltedmedia.com > http://five.pairlist.net/mailman/listinfo/coco >