Function	IsCom8000
Description	Checks is any data in input buffer of multi-serial module. This function is used for C/C++ compiler.
Function Prototype	int IsCom8000(int slot, int port) Return 0 : no data in buffer 1 : some data in buffer slot 0 ~ 3 for 4 slots 0 ~ 7 for 8 slots port 0, 1         ==> I-8112 and I-8142 0, 1, 2, 3 ==> I-8114 and I-8144
Example	Function Ret = IsCom8000(0,1); Return 0 : no data in buffer 1 : some data in buffer Description Checks is any data in buffer of COM1 of multi-serial module that plugged on slot 0 of I-8000 MCU.
Reference	SetInBufSize SetOutBufSize InstallCom8000 _SetBaudrate _SetDataFormat RestoreCom8000 IsCom8000 ToCom8000 ToCom8000Str ToCom8000nBytes ReadCom8000 ReadCom8000nBytes
Modules	I-8112, I-8114, I-8142, I-8144

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