Hi MPLAB IDE v7.00 seems to default to case-sensitive for symbol names, which thows up loads of 'symbol not previously defined errors with my old code - the .inc file has them all in SHOUTY UPPER CASE while my code uses nice pascal-like lower case. The build window shows: Executing: "C:\Program Files\Microchip\MPASM Suite\MPAsmWin.exe" /q /p16F84 "pulse.asm" /l"pulse.lst" /e"pulse.err" I think if I could find the right place, I could add /c to that commnd line, but I've run out of places to look. Of course I can use mpasm directly and tick (or is it untick?) the box, but that doesn't help here. Where have they hidden the option? Cheers John -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist