System Functions
- TAP_SystemProc
- TAP_GetState
- TAP_ExitNormal
- TAP_EnterNormal
- TAP_Exit
- TAP_KbHit
- TAP_GetCh
- TAP_PutCh
- TAP_Print
- TAP_GetSystemVar
- TAP_SetSystemVar
- TAP_WriteSystemVar
- TAP_GenerateEvent
- TAP_SetBaudRate
- TAP_Vfd_GetStatus
- TAP_Vfd_Control
- TAP_Vfd_SendData
- TAP_GetSystemProc