And we have a winner of the overlay competition ..... From the CBASIC manual The CHAINstatement can load two types of programs: an overlay program generated by the linker, or a directly executable file. As I used CBASIC this must be where I got it from Rod Smallwood -- Wanted : KDJ11-E M8981 KK8-E M8300 KK8-E M8310 KK8-E M8320 KK8-E M8330