Function read_kickstart

src/memory.cpp:1687–1788

static const uae_char *kickstring = "exec.library";

static int read_kickstart(struct zfile *f, uae_u8 *mem, int size, int dochecksum, int noalias)
{
	uae_char buffer[11];
	int i, j, oldpos;
	int cr = 0, kickdisk = 0;

	if (size < 0) {
		zfile_fseek(f, 0, SEEK_END);
		size = zfile_ftell32(f) & ~0x3ff;
		zfile_fseek(f, 0, SEEK_SET);
	}
	oldpos = zfile_ftell32(f);
	i = zfile_fread32(buffer, 1, sizeof(buffer), f);
	if (i < sizeof(buffer))
		return 0;
	if (!memcmp(buffer, "KICK", 4)) {
		zfile_fseek(f, 512, SEEK_SET);
		kickdisk = 1;
#if 0
	} else if (size >= ROM_SIZE_512 && !memcmp (buffer, "AMIG", 4)) {
		/* ReKick */
		zfile_fseek (f, oldpos + 0x6c, SEEK_SET);
		cr = 2;
#endif
	} else if (memcmp((uae_char*)buffer, "AMIROMTYPE1", 11) != 0) {
		zfile_fseek(f, oldpos, SEEK_SET);
	} else {
		cloanto_rom = 1;
		cr = 1;
	}

	memset(mem, 0, size);
	if (size >= 131072) {
		for (i = 0; i < 8; i++) {
			mem[size - 16 + i * 2 + 1] = 0x18 + i;
		}
		mem[size - 20] = size >> 24;
		mem[size - 19] = size >> 16;
		mem[size - 18] = size >>  8;
		mem[size - 17] = size >>  0;
	}

	i = zfile_fread32(mem, 1, size, f);

	if (kickdisk && i > ROM_SIZE_256)
		i = ROM_SIZE_256;
#if 0
	if (i >= ROM_SIZE_256 && (i != ROM_SIZE_256 && i != ROM_SIZE_512 && i != ROM_SIZE_512 * 2 && i != ROM_SIZE_512 * 4)) {
		notify_user (NUMSG_KSROMREADERROR);
		return 0;
	}
#endif
	if (i < size - 20)
		kickstart_fix_checksum(mem, size);
	j = 1;
	while (j < i)
		j <<= 1;
	i = j;