It doesn't sound like you got the real docs. You need hc.system, written by Gary Desrochers to use hyperc on a IIgs. Lots of stuff available via ftp on calvin.sfasu.edu. (except hyperc16... maybe sometime this week for the IIgs) /* Andy Werner hybrid concepts st2975@siucvmb.siu.edu * * HyperC enthusiast 65802/816 support for HyperC * * Laser 128EX 4Mhz 65802 st2975@siucvmb.bitnet */