#include<stdlib.h>

#include <stdio.h>

#include <conio.h>

#define XDATA(arg) (arg +0)

#define XCMD (arg) (arg + 1)

#define YDATA (arg) (arg +2)

#define YCMD (arg) (arg +3)

// RLD Reg.

#define

RLD (arg) (arg | 0x80)

#define XRLD (arg) (arg | 0)

#define YRLD (arg) XRLD(arg)

#define Rst_BP 0x01

#define Rst_CNTR 0x02

#define Rst_FLAGS 0x04

#define Rst_E 0x06

#define Trf_PR_CNTR 0x08

#define Trf_CNTR_OL 0x10

#define Trf_PS0_PSC 0x18

7267-042713-14

//CMR Reg.

#define

CMR(arg) (arg | 0xA0)

#define XCMR(arg) (arg | 0x20)

#define YCMR(arg) XCMR(arg)

#define BINCnt

0x00

#define BCDCnt

0x01

#define NrmCnt

0x00

#define RngLmt

0x02

#define NRcyc

0x04

#define ModN

0x06

#define NQDX

0x00

#define QDX1

0x08

#define QDX2

0x10

#define QDX4

0x18

//IOR Reg.

#define IOR(arg) (arg | 0xC0)

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

#define YIOR(arg) XIOR(arg)

#define DisAB

0x00

#define EnAB

0x01

#define LCNTR

0x00

#define LOL

0x02

#define RCNTR

0x00

#define ABGate

0x04

#define CYBW

0x00

#define CPBW

0x08

#define CB_UPDN

0x10

#define IDX_ERR

0x18

// IDR

#define IDR(arg) (arg | 0xE0)

#define XIDR(arg) (arg | 0x60)

#define YIDR(arg) XIDR(arg)

#define DisIDX

0x00

#define EnIDX

0x01

#define NIDX

0x00

#define PIDX

0x02

#define LIDX

0x00

#define RIDX

0x04

void Init_7266(int Addr);

/* Initialize 7266 as follows (X + Y CNTR)

Modulo N count mode for N = 0x123456

Binary Counting

Index on LCNTR/LOL Input

CY and BW outputs

RCNTR/ABG controls Counters

A and B Enabled

*/

void Init_7266(int Addr)

{

/Setup IOR Reg.

outp(XCMD(Addr),IOR(DisAB + LOL + ABGate + CYBW));

//Disable Counters and Set CY BW Mode

//Setup RLD Reg.

outp(XCMD(Addr),RLD(Rst_BP + Rst_FLAGS));

//Reset Byte Pointer(BP) And Flags

outp(XDATA(Addr),0x06);

//Load 6 to PR0 to setup Transfer to PS0

outp(YDATA(Addr),0x06);

//Load 6 to PR0 to setup Transfer to PS0

outp(XCMD(Addr),RLD(Rst_E + Trf_PS0_PSC));

//Reset E Flag and Transfer PR0 to PSC

outp(XCMD(Addr),RLD(Rst_BP + Rst_CNTR));

//Reset BP and Reset Counter

//Setup IDR Reg.

outp(XCMD(Addr),IDR(EnIDX + NIDX + LIDX));

//Enable Negative Index on LCNTR/LOL Input

//Setup CMR Reg.

outp(XCMD(Addr),CMR(BINCnt + ModN + QDX4)); //Set Binary Mondulo N Quadrature x4

C Sample Routines for Interfacing with LS7266R1