a56/torom.c

   1 /*******************************************************
   2  *
   3  *  a56 - a DSP56001 assembler
   4  *
   5  *  Written by Quinn C. Jensen
   6  *  July 1990
   7  *
   8  *******************************************************\
   9
  10 /*
  11  * Copyright (C) 1990-1994 Quinn C. Jensen
  12  *
  13  * Permission to use, copy, modify, distribute, and sell this software
  14  * and its documentation for any purpose is hereby granted without fee,
  15  * provided that the above copyright notice appear in all copies and
  16  * that both that copyright notice and this permission notice appear
  17  * in supporting documentation.  The author makes no representations
  18  * about the suitability of this software for any purpose.  It is
  19  * provided "as is" without express or implied warranty.
  20  *
  21  */
  22 static char *Copyright = "Copyright (C) 1990-1994 Quinn C. Jensen";
  23
  24 /*
  25  *  This program converts the a56.out assembler output file into
  26  *  raw binary, suitable for conversion to S-records for an EPROM burner.
  27  *
  28  */
  29
  30
  31 #define MAX 256
  32
  33 main(argc,argv)
  34 int argc;
  35 char *argv[];
  36 {
  37         char buf[MAX];
  38         int curaddr = 0;
  39         int line = 0;
  40
  41         while(gets(buf)) {
  42                 char seg;
  43                 int addr, data;
  44                 line++;
  45                 if(sscanf(buf, "%c%x%x", &seg, &addr, &data) == 3) {
  46                         if(seg == 'I') {
  47                                 break;
  48                         } else {
  49                                 if(addr < curaddr) {
  50                                         fatal("%s: input line %d: can't go back\n", argv[0], line);
  51                                 } else if(addr != curaddr) {
  52                                         while(curaddr < addr) {
  53                                                 putword(0);
  54                                                 curaddr++;
  55                                         }
  56                                 }
  57                                 putword(data);
  58                                 curaddr++;
  59                         }
  60                 }
  61         }
  62 }
  63
  64 putword(data)
  65 int data;
  66 {
  67         putchar(data >>  0 & 0xFF);
  68         putchar(data >>  8 & 0xFF);
  69         putchar(data >> 16 & 0xFF);
  70 }