kIOPCICommandMemWrInvalidate The bit that enables legacy memory writing and invalidation. DeclarationkIOPCICommandMemWrInvalidate See AlsoBitskIOPCICommandIOSpacekIOPCICommandMemorySpacekIOPCICommandBusMasterkIOPCICommandSpecialCycleskIOPCICommandPaletteSnoopkIOPCICommandParityErrorkIOPCICommandAddressSteppingkIOPCICommandSERRkIOPCICommandFastBack2BackkIOPCICommandInterruptDisablekIOPCICommandBusLead