/* $Id: gen.c,v 1.1 2004/03/30 07:19:17 jmuelmen Exp $ */

#include <stdio.h>

#include "surf_drv.h"

#define Rdp(x) (1 / (1 / Rd + 1 / Rdd))
#define Req(a) (1 / (1 / R((a)) + 1 / Rt + 1 / Rset))
#define R(a) ((255 - (a)) * Rv / 256.0 + Rw)
#define v(a) (vref * (Rdp(1) + Req((a))) / Rdp(1))

static const double Rdd = 8.0;
static const double Rset = 39.9;
static const double Rt = 62.0;
static const double vref = 1.24;

extern FILE *outfile;

void look_gen (double Rd, double Rv, double Rw)
{
     static unsigned short addr = SURF_LOOKUP_ADDR;
     unsigned short i;
     printf("Giving it a go with %f, %f, %f\n", Rd, Rv, Rw);
     for (i = 0; i < 0x0100; i += 0x20, addr += 0x20) {
	  unsigned short j;
	  unsigned long checksum = 0x20 + (addr >> 8) + (addr & 0xff);
	  fprintf(outfile, ":20%.4X00", addr);
	  for (j = i; j < i + 0x20; ++j) {
	       double V = v(j);
	       int vv = (int)((V - 1.2) / 2.048 * (1 << 12));
	       int vvv = vv >> 4;
	       fprintf(outfile, "%.2X", (unsigned char)vvv);
	       checksum += vvv;
	  }
	  checksum %= 0x100;
	  checksum = 0x100 - checksum;
	  fprintf(outfile, "%.2X\n", (unsigned char)checksum);
     }
}