kIOPCICommandFastBack2Back The bit that enables legacy fast back-to-back transactions. DeclarationkIOPCICommandFastBack2Back See AlsoBitskIOPCICommandIOSpacekIOPCICommandMemorySpacekIOPCICommandBusMasterkIOPCICommandSpecialCycleskIOPCICommandMemWrInvalidatekIOPCICommandPaletteSnoopkIOPCICommandParityErrorkIOPCICommandAddressSteppingkIOPCICommandSERRkIOPCICommandInterruptDisablekIOPCICommandBusLead