EIHD_L_ISDOFF
isd = (header[EIHD_L_ISDOFF+3]*0x1000000 +
header[EIHD_L_ISDOFF+2]*0x10000 +
header[EIHD_L_ISDOFF+1]*0x100 +
header[EIHD_L_ISDOFF]);
mopFilePutLX(header, EIHD_L_ISDOFF, 0xd4, 4);