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add comment about gci format

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This commit is contained in:
Martin Michelsen
2023-04-01 10:29:43 -07:00
parent a06aa2f1fa
commit 5e05b3d11f
1 changed files with 8 additions and 0 deletions
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src/SaveFileFormats.hh
+8
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@@ -27,6 +27,13 @@ struct ShuffleTables {
// Every PSOGC save file begins with a PSOGCIFileHeader. The first 0x40 bytes of
// this are the .gci file header; the remaining bytes of the file are the actual
// data from the memory card. For save files (system / character / Guild Card),
// one of the structures below immediately follows the PSOGCIFileHeader. The
// system file is not encrypted, but the character and Guild Card files are
// encrypted using a seed stored in the system file.
struct PSOGCIFileHeader { struct PSOGCIFileHeader {
/* 0000 */ parray<char, 4> game_id; // 'GPOE', 'GPSP', etc. /* 0000 */ parray<char, 4> game_id; // 'GPOE', 'GPSP', etc.
/* 0004 */ parray<char, 2> developer_id; // '8P' for Sega /* 0004 */ parray<char, 2> developer_id; // '8P' for Sega
@@ -45,6 +52,7 @@ struct PSOGCIFileHeader {
// fields in this struct starting with gci_header.game_name. (Yes, including // fields in this struct starting with gci_header.game_name. (Yes, including
// the checksum field, which is temporarily zero.) See checksum_correct below. // the checksum field, which is temporarily zero.) See checksum_correct below.
/* 2084 */ be_uint32_t checksum; /* 2084 */ be_uint32_t checksum;
/* 2088 */
bool checksum_correct() const; bool checksum_correct() const;
void check() const; void check() const;