/*******************************************************************/
/*                                                                 */
/* Advanced Communication Board Developer Toolkit                  */
/* (c)Copyright 1993-1995, Sealevel Systems Incorporated           */
/*                                                                 */
/*   For use with Advanced Communication Boards                    */
/* DMA.H                                                           */
/* This file defines constants and prototypes for                  */
/*   routines that interface to the 8237 DMA controller            */
/* Source File is DMA.ASM                                          */
/*******************************************************************/
/*  Hi-Byte = DMA Page Reg, Lo-Byte = Address Reg 1                */
/*******************************************************************/
#define DMA0 0x8700
#define DMA1 0x8302
#define DMA2 0x8104
#define DMA3 0x8206

/*******************************************************************/
/*  DMA Mode Equates used to program DMA Mode Register             */
/*******************************************************************/
#define RX0 0x44
#define TX0 0x48
#define RX1 0x45
#define TX1 0x49
#define RX2 0x46
#define TX2 0x4A
#define RX3 0x47
#define TX3 0x4B
/*******************************************************************/
/*   Values written to DMA Single Mask Register                    */
/*******************************************************************/
#define SETDMA0 4       /* Used to turn DMA Channel off */
#define SETDMA1 5
#define SETDMA2 6
#define SETDMA3 7
#define CLEARDMA0 0     /* Used to turn DMA Channel on  */
#define CLEARDMA1 1
#define CLEARDMA2 2
#define CLEARDMA3 3

/*******************************************************************/
/*    Procedure Prototypes for Calling Program                     */
/*******************************************************************/

#ifdef __cplusplus
extern "C" {
#endif

extern void SetPageRegister(unsigned short, unsigned short,unsigned short);
extern void SetPageRegisterEx(unsigned short,unsigned char __far *fpBUFFER);
extern void SetTC(unsigned short,unsigned short);
extern unsigned short GetTC(unsigned short);
extern void MaskDMA(unsigned char);
extern void SetDMAMode(unsigned char);
extern void SingleMaskDMA(unsigned char);
extern int CheckDMAPage(unsigned short wTC, unsigned short, unsigned short);
extern int CheckDMAPageEx(unsigned short wTC, unsigned char __far *fpBUFFER);
#ifdef __cplusplus
  }
#endif

/*******************************************************************/