/***************** Define A821 Register Address *****************/
#define TIMER0		0x00	/* 8254 timer/counter_0 */
#define TIMER1		0x01	/* 8254 timer/counter_1 */
#define TIMER2		0x02	/* 8254 timer/counter_2 */
#define TIMER_MODE	0x03	/* 8254 control register */
#define AD_LO		0x04	/* AD, Low Byte */
#define AD_HI		0x05	/* AD, High Byte */
#define DA_CH0_LO	0x04	/* DA, Channel 0, Low  byte */
#define DA_CH0_HI	0x05	/* DA, Channel 0, High byte */
#define DA_CH1_LO	0x06	/* DA, Channel 1, Low  byte */
#define DA_CH1_HI	0x07	/* DA, Channel 1, High byte */
#define DI_LO		0x06	/* DI, Low  byte */
#define DI_HI		0x07	/* DI, High byte */
#define DO_LO		0x0D	/* DO, Low  byte */
#define DO_HI		0x0E	/* DO, High byte */
#define AD_READY	0x08	/* AD finish for A821PG */

#define CLEAR_IRQ	0x08	/* AD, Clear Interrupt Request */
#define SET_GAIN	0x09	/* AD, Gain Control */
#define SET_CH		0x0A	/* AD, Multiplexer Control */
#define SET_MODE	0x0B	/* AD, Mode Control */
#define SOFT_TRIG	0x0C	/* AD, Software Trigger Control */

/*** define AD Trigger/Transfer Mode ***/
#define POLLING_MODE	1	/* Software Trig, Software Transfer (Polling)*/
#define DMA_MODE	2	/* Pacer    Trig, DMA Transfer	   */
#define INTERRUPT_MODE	6	/* Pacer    Trig, Software/Interrupt Transfer*/

/*** define the AD Gain Code ***/
#define A821_BI_1	0
#define A821_BI_10	1
#define A821_BI_100	2
#define A821_BI_1000	3
#define A821_UNI_1	4
#define A821_UNI_10	5
#define A821_UNI_100	6
#define A821_UNI_1000	7
#define A821_BI_05	8
#define A821_BI_5	9
#define A821_BI_50	10
#define A821_BI_500	11

/*** define the error number ***/
#define   NoError	   0
#define   CheckBoardError  1
#define   CheckDmaError    2
#define   CheckIrqError    3
#define   CardNumError	   4

#if defined __cplusplus
extern "C"
{
#endif
int FAR PASCAL _export A821_ActiveBoard(int BoardNo);
int FAR PASCAL _export A821_Check_Address(int BaseAddr);
int FAR PASCAL _export A821_Initialize(int CardNo,int BaseAddr,int DmaNo, int IrqNo);
unsigned FAR PASCAL _export A821_DI(void);
void FAR PASCAL _export A821_DO(unsigned DigitOutput);
void FAR PASCAL _export A821_DA(int Channel,unsigned data);
void FAR PASCAL _export A821_AD_SetChGainMode(int Ch,int Gain,int Mode);
void FAR PASCAL _export A821_AD_PollingArray(int FAR *Buffer,unsigned Length);
unsigned FAR PASCAL _export A821_AD_PollingVar(void);
void FAR PASCAL _export A821_AD_INT(int Ch,int Gain,
		unsigned int count, int FAR *Buffer2, int c1, int c2);
unsigned FAR PASCAL _export A821_AD_INT_Count(void);
void FAR PASCAL _export A821_AD_INT_Stop(void);
int FAR PASCAL _export A821_Delay(unsigned int DownCount);
unsigned FAR PASCAL _export  A821_InputByte(int Address );
void FAR PASCAL _export A821_OutputByte(int Address, int val);

#if defined __cplusplus
}
#endif