struct SysParmType { UInt8 valid; UInt8 aTalkA; UInt8 aTalkB; UInt8 config; SInt16 portA; SInt16 portB; SInt32 alarm; SInt16 font; SInt16 kbdPrint; SInt16 volClik; SInt16 misc; }; typedef SysParmType SysPPtr;