[syslinux] More info about Microsoft SDI images...

[Sergii Kolisnyk]

Hello!

Why you don't check the SDI header checksum?
May be my explanation isn't clear enough?
http://skolk.livejournal.com/886.html

do {
    unsigned char checksum=0;
    const unsigned char *cptr=ptr;
    int i=0x200; /* 512 */

#if 1 /* choose for your style ;) */
    do {
        checksum += *cptr++;
    } while (--i);
#else
    for (i=0;i<512;i++) checksum += cptr[i];
#endif

    if (checksum != 0 ) {
        fputs("Bad header checksum for SDI file\n", stdout);
        goto bail;
    }
} while (0);

Sergii