According to the websites I've found, the 386sl is a 386sx with power management. This suggests that a 387sx - or your Cyrix - might be the appropriate part. the web site is at http://telecom.tbi.net/comphis.html. Intel, naturally, has no information on the 386sl except about its year 2000 compatibility. According to SupportTandy.com, their 386sl laptop takes a 387sx or sl coprocessor, so I think I'm borne out here. (http://support.tandy.com/support_computer/doc1/1211.htm) -- Jim Strickland jim(a)DIESPAMMERSCUMcalico.litterbox.com ----------------------------------------------------------------------- Vote Meadocrat! Bill and Opus in 2000 - Who ELSE is there? -----------------------------------------------------------------------