memmap: Add a comment about the new hack detection.

This commit is contained in:
BearOso 2021-02-07 12:07:37 -06:00
parent a146093e4e
commit 8a5d29c4a9
1 changed files with 2 additions and 0 deletions

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@ -1104,6 +1104,8 @@ int CMemory::ScoreHiROM (bool8 skip_header, int32 romoff)
uint8 *buf = ROM + 0xff00 + romoff + (skip_header ? 0x200 : 0);
int score = 0;
// Check for extended HiROM expansion used in Mother 2 Deluxe et al.
// Looks for size byte 13 (8MB) and an actual ROM size greater than 4MB
if (buf[0xd7] == 13 && CalculatedSize > 1024 * 1024 * 4)
score += 5;