I've got a project that's running too slowly, so I thought I'd try speeding it up by changing the default storage class in C18 from auto to static (or overlay). On doing this, the linker complains: MPLINK 4.00, Linker Copyright (c) 2005 Microchip Technology Inc. Error - could not find definition of symbol '__PutCharLcdFifo:0' in file 'C:\ProductDesigns\Iq512\051013\main.o'. Errors : 1 It does this under both static and overlay, but works fine with auto. Any ideas what I'm doing wrong? THANKS! Harold -- FCC Rules Updated Daily at http://www.hallikainen.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist