The following warnings apears from time to time. MEM_TST.C(41): warning C280: 'mem_DPP': unreferenced local variable Sometimes I want to suspend them, but I can't find how. suspend linker warnings, Lxxx, are possible via the project configuration screens but I didn't see any place to direct the compiler to suspend compilation warnings Cxxx. Is it possible at all ? I am using the following environment: IDE-Version: µVision2 V2.40 Tool Version Numbers: Toolchain Path: C:\Keil\C51\BIN\ C Compiler: C51.Exe V7.10 Assembler: A51.Exe V7.09 Linker/Locator: BL51.Exe V5.03 Librarian: LIB51.Exe V4.24 Hex Converter: OH51.Exe V2.6 CPU DLL: S8051.DLL V2.43 Dialog DLL: DCORE51.DLL V2.43 Target DLL: BIN\DCD_DoCD.DLL V1.06 Dialog DLL: TP51.DLL V2.43 Thanks. Amit A.