C Sample Routines for Interfacing with LS7166

#include <stdio.h>

#include <stdlib.h>

#include <conio.h>

#define DATAMODE(arg) (arg + 0)

#define CTRLMODE(arg) (arg + 1)

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

/* MCR (Master Control Register) */

/* Select MCR */

#define MCR(arg) (arg | 0x00)

/* Master Reset */

/* Reset CNTR, ICR, OCCR, QR, BWT, CYT, OL, COMPT, and PR/OL Byte Pointer */

/* Set PR and SIGN */

#define Rst_Master

0x20

/* Reset COMPT */

#define Rst_COMPT 0x10

/* Transfer PR to CNTR (24 bits) */

#define Trf_PR_CNTR 0x08

/* Reset CNTR, BWT and CYT */

/* Set SIGN bit */

#define Rst_CNTR_BWT_CYT_Set_SIGN

0x04

/* Transfer CNTR to OL (24 bits) */

#define Trf_CNTR_OL 0x02

/* Reset PR/OL Byte Pointer */

#define Rst_BP 0x01

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

/* ICR (Input Control Register) */

/* Select ICR */

#define ICR(arg) (arg | 0x40)

_____ ____

/* Select LCTR / LLTC as Load-CNTR Input */

#define LCNTR 0x00

_____ ____

/* Select LCTR / LLTC as Load-OL Input */

#define LOL

0x20

_____ ____

/* Select ABGT / RCTR as Reset-CNTR Input */

#define RCNTR 0x00

_____ ____

/* Select ABGT / RCTR as Enable / Disable Gate for A / B Inputs */

#define ABGate 0x10

/* Disable A / B Inputs */

#define DisAB 0x00

/* Enable A / B Inputs */

#define EnAB

0x08

7166-081507-16