144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/*
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* This file is part of x48, an emulator of the HP-48sx Calculator.
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* Copyright (C) 1994 Eddie C. Dost (ecd@dressler.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Log: checkrom.c,v $
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* Revision 1.4 1995/01/11 18:20:01 ecd
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* major update to support HP48 G/GX
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*
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* Revision 1.3 1994/11/02 14:40:38 ecd
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* support for "compressed" rom files added
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*
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* Revision 1.3 1994/11/02 14:40:38 ecd
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* support for "compressed" rom files added
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*
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* Revision 1.2 1994/10/06 16:30:05 ecd
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* changed char to unsigned
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*
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* Revision 1.1 1994/10/01 10:12:53 ecd
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* Initial revision
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*
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*
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* $Id: checkrom.c,v 1.4 1995/01/11 18:20:01 ecd Exp ecd $
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "global.h"
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#include "romio.h"
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unsigned char *rom;
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unsigned short rom_crc, crc;
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int verbose = 0;
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char *progname;
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#define calc_crc(n) (crc = ((crc >> 4) ^ (((crc ^ n) & 0xf) * 0x1081)))
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int
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#ifdef __FunctionProto__
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main(int argc, char **argv)
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#else
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main(argc, argv)
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int argc;
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char **argv;
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#endif
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{
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unsigned char version[7];
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long ver_addr;
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int i, a, c, d, d0, d1, D0, D1;
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int fail;
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if (argc < 2) {
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LOGE( "usage: %s rom-file\n", argv[0]);
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exit (1);
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}
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if (!read_rom_file(argv[1], &rom, &rom_size))
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{
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LOGE( "%s: can\'t read ROM from %s\n", argv[0], argv[1]);
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exit (1);
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}
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if (opt_gx != 0)
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ver_addr = 0x7ffbf;
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else
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ver_addr = 0x7fff0;
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for (i = 0; i < 6; i++) {
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version[i] = rom[ver_addr + 2 * i + 1] << 4;
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version[i] |= rom[ver_addr + 2 * i];
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}
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version[6] = '\0';
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printf("ROM Version is %s\n", version);
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for (i = 0x100; i < 0x140; i++) {
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rom[i] = 0x0;
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}
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fail = a = 0;
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D0 = 0x00000;
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D1 = 0x40000;
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for (d = 1; d <= rom_size / 0x80000; d++) {
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crc = 0x0000;
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rom_crc = 0;
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for (i = 0; i < 4; i++) {
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rom_crc <<= 4;
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rom_crc |= (rom[0x80000 * d - i - 1] & 0x0f);
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}
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if (opt_gx)
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printf("ROM CRC %d reads 0x%.4x\n", d, rom_crc);
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else
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printf("ROM CRC reads 0x%.4x\n", rom_crc);
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d0 = D0;
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d1 = D1;
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for (c = 0x3fff; c >= 0x0000; c--) {
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for (i = 0; i < 16; i++) {
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calc_crc(rom[d0 + i]);
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}
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d0 += 16;
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for (i = 0; i < 16; i++) {
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calc_crc(rom[d1 + i]);
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}
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d1 += 16;
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}
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D0 += 0x80000;
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D1 += 0x80000;
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a = crc;
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a = ((a | 0xf0000) + 1) & 0xfffff;
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if (a != 0x00000) {
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fail++;
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}
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}
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if (fail != 0)
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printf("IROM %.4x: ROM CRC test FAILED !!!\n", a & 0xffff);
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else
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printf("IROM OK: ROM CRC test passed.\n");
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return 0;
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}
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