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ADL: Ignore broken sectors

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This commit is contained in:
Walter van Niftrik 2018-01-27 23:03:54 +01:00
parent 1600c4dbb7
commit b64d8dbf3b
1 changed files with 11 additions and 5 deletions
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16
engines/adl/disk.cpp
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@ -193,8 +193,10 @@ static Common::SeekableReadStream *readImage_NIB(const Common::String &filename,
}
byte checksum = buffer[pos++ % trackLen];
if (checksum < 0x96 || oldVal != c_6and2_lookup[checksum - 0x96])
if (checksum < 0x96 || oldVal != c_6and2_lookup[checksum - 0x96]) {
warning("NIB: checksum mismatch @ (%x, %x)", track, sector);
continue;
}
for (uint n = 0; n < 256; ++n) {
output[n] = inbuffer[86 + n] << 2;
@ -244,10 +246,14 @@ static Common::SeekableReadStream *readImage_NIB(const Common::String &filename,
oldVal = val ^ oldVal;
inbuffer[n] = oldVal;
}
if (!truncated) {
byte checksum = buffer[pos++ % trackLen];
if (checksum < 0xaa || oldVal != c_5and3_lookup[checksum - 0xaa])
warning("NIB: checksum mismatch @ (%x, %x)", track, sector);
if (truncated)
continue;
byte checksum = buffer[pos++ % trackLen];
if (checksum < 0xaa || oldVal != c_5and3_lookup[checksum - 0xaa]) {
warning("NIB: checksum mismatch @ (%x, %x)", track, sector);
continue;
}
// 8 bytes of nibbles expand to 5 bytes