My simulation software is setting the N bit on CPY $C026. Y=0x01FF, $C026=0x000A. Is this correct? The "pink book" seems to say no. Shannen ---------------------------------------------------------------------------- To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes) in the body of a message (not the subject) to majordomo@lists.diy-efi.org