Subversion Repositories eco32

/*

 * main.c -- ECO32 simulator

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "common.h"

#include "console.h"

#include "error.h"

#include "command.h"

#include "instr.h"

#include "cpu.h"

#include "mmu.h"

#include "memory.h"

#include "timer.h"

#include "dspkbd.h"

#include "term.h"

#include "disk.h"

#include "output.h"

#include "shutdown.h"

#include "graph.h"

static void usage(char *myself) {

  fprintf(stderr, "Usage: %s\n", myself);

  fprintf(stderr, "         [-i]             set interactive mode\n");

  fprintf(stderr, "         [-m <n>]         install n MB of RAM (1-%d)\n",

          RAM_SIZE_MAX / M);

  fprintf(stderr, "         [-l <prog>]      set program file name\n");

  fprintf(stderr, "         [-a <addr>]      set program load address\n");

  fprintf(stderr, "         [-r <rom>]       set ROM image file name\n");

  fprintf(stderr, "         [-d <disk>]      set disk image file name\n");

  fprintf(stderr, "         [-t <n>]         connect n terminals (0-%d)\n",

          MAX_NTERMS);

  fprintf(stderr, "         [-g]             install graphics controller\n");

  fprintf(stderr, "         [-c]             install console\n");

  fprintf(stderr, "         [-o <file>]      bind output device to file\n");

  fprintf(stderr, "The options -l and -r are mutually exclusive.\n");

  fprintf(stderr, "If both are omitted, interactive mode is assumed.\n");

  exit(1);

}

int main(int argc, char *argv[]) {

  int i;

  char *argp;

  char *endp;

  Bool interactive;

  int memSize;

  char *progName;

  unsigned int loadAddr;

  char *romName;

  char *diskName;

  int numTerms;

  Bool graphics;

  Bool console;

  char *outputName;

  Word initialPC;

  char command[20];

  char *line;

  interactive = false;

  memSize = RAM_SIZE_DFL / M;

  progName = NULL;

  loadAddr = 0;

  romName = NULL;

  diskName = NULL;

  numTerms = 0;

  graphics = false;

  console = false;

  outputName = NULL;

  for (i = 1; i < argc; i++) {

    argp = argv[i];

    if (*argp != '-') {

      usage(argv[0]);

    }

    argp++;

    switch (*argp) {

      case 'i':

        interactive = true;

        break;

      case 'm':

        if (i == argc - 1) {

          usage(argv[0]);

        }

        memSize = strtol(argv[++i], &endp, 10);

        if (*endp != '\0' ||

            memSize <= 0 ||

            memSize > RAM_SIZE_MAX / M) {

          usage(argv[0]);

        }

        break;

      case 'l':

        if (i == argc - 1 || progName != NULL || romName != NULL) {

          usage(argv[0]);

        }

        progName = argv[++i];

        break;

      case 'a':

        if (i == argc - 1) {

          usage(argv[0]);

        }

        loadAddr = strtoul(argv[++i], &endp, 0);

        if (*endp != '\0') {

          usage(argv[0]);

        }

        break;

      case 'r':

        if (i == argc - 1 || romName != NULL || progName != NULL) {

          usage(argv[0]);

        }

        romName = argv[++i];

        break;

      case 'd':

        if (i == argc - 1 || diskName != NULL) {

          usage(argv[0]);

        }

        diskName = argv[++i];

        break;

      case 't':

        if (i == argc - 1) {

          usage(argv[0]);

        }

        numTerms = strtol(argv[++i], &endp, 10);

        if (*endp != '\0' ||

            numTerms < 0 ||

            numTerms > MAX_NTERMS) {

          usage(argv[0]);

        }

        break;

      case 'g':

        graphics = true;

        break;

      case 'c':

        console = true;

        break;

      case 'o':

        if (i == argc - 1 || outputName != NULL) {

          usage(argv[0]);

        }

        outputName = argv[++i];

        break;

      default:

        usage(argv[0]);

    }

  }

  cInit();

  cPrintf("ECO32 Simulator started\n");

  if (progName == NULL && romName == NULL && !interactive) {

    cPrintf("Neither a program to load nor a system ROM was\n");

    cPrintf("specified, so interactive mode is assumed.\n");

    interactive = true;

  }

  initInstrTable();

  timerInit();

  if (console) {

    displayInit();

    keyboardInit();

  }

  termInit(numTerms);

  diskInit(diskName);

  outputInit(outputName);

  shutdownInit();

  if (graphics) {

    graphInit();

  }

  memoryInit(memSize * M, progName, loadAddr, romName);

  mmuInit();

  if (progName != NULL) {

    initialPC = 0xC0000000 | loadAddr;

  } else {

    initialPC = 0xC0000000 | ROM_BASE;

  }

  cpuInit(initialPC);

  if (!interactive) {

    cPrintf("Start executing...\n");

    strcpy(command, "c\n");

    execCommand(command);

  } else {

    while (1) {

      line = cGetLine("ECO32 > ");

      if (*line == '\0') {

        break;

      }

      cAddHist(line);

      if (execCommand(line)) {

        break;

      }

    }

  }

  cpuExit();

  mmuExit();

  memoryExit();

  timerExit();

  displayExit();

  keyboardExit();

  termExit();

  diskExit();

  outputExit();

  shutdownExit();

  graphExit();

  cPrintf("ECO32 Simulator finished\n");

  cExit();

  return 0;

}