cache_structure
Table of Contents
Cache Structure
RomVault stores all information about scanned and datted files in the RomVault Cache. This cache file is essentially a highly optimized database that includes filenames, sizes, hashes, modified timestamps, and pertinent flags to track various ROM statuses.
This page is for low level debugging reference only. You should never need to look at the cache contents in a hex editor, but if you do the tables below help to explain the cache structure. This page is under construction and should not be considered comprehensive.
RomVault 3.5.x Cache
| Example Offset (h) | Size (bytes) | Name | Description | Example HEX Values | Explanation |
|---|---|---|---|---|---|
| Header Section | |||||
| 0x00000000 | 4 | Cache Version | Version of the internal cache database | 02000000 | Version 2, used with RV 3.5.x |
| 0x00000004 | 4 | File Flags | Flags for tree and DAT structure | 00400400 | Has tree, has children |
| 0x00000008 | 1 | File Name | Length + file name | 00 | Not applicable |
| 0x00000009 | 1 | Found File Name | Length + found file name | 00 | Not applicable |
| 0x0000000A | 8 | File Modify Time | Last modified time in ticks, little endian | 0000000000000000 | Not applicable |
| 0x00000012 | 1 | DAT Status | Flag for DAT status | 00 | In DAT, collected |
| 0x00000013 | 1 | Got Status | Flag for Got status | 00 | Not Got |
| 0x00000014 | 1 | Tree Expanded | Boolean flag for directory expanded in tree | 01 | Always expanded |
| 0x00000015 | 1 | Tree Selected | Flag for tree selection | 01 | Always selected |
| 0x00000016 | 4 | Child Count | Number of children | 03000000 | 3 directories: RomRoot + 2 ToSorts |
| … (end of cache) | 4 | File Status | Status of the file / group | 00000000 | |
| File Type 1 - Directory without DATs | |||||
| 0x0000001A | 1 | Child Type | Flag for file type | 01 | Directory |
| 0x0000001B | 4 | File Flags | Flags for tree and DAT structure | 00400400 | Has tree, has children |
| 0x0000001F | varies | File Name | Length + file name | 08526F6D5661756C | 8 characters + “RomVault” |
| 0x00000028 | varies | Found File Name | Length + found file name | 00 | Not applicable |
| 0x00000029 | 8 | File Modify Time | Last modified time in ticks, little endian | 0000000000000000 | Not applicable |
| 0x00000031 | 1 | DAT Status | Flag for DAT status | 00 | In DAT, collected |
| 0x00000032 | 1 | Got Status | Flag for Got status | 01 | Got |
| 0x00000033 | 1 | Tree Expanded | Boolean flag for directory expanded in tree | 01 | Expanded |
| 0x00000034 | 1 | Tree Selected | Flag for tree selection | 00 | Not selected |
| 0x00000035 | 4 | Child Count | Number of children | 01000000 | 1 child |
| … (end of group) | 4 | File Status | Status of the file / group | 00000000 | |
| File Type 1 - Directory with DATs | |||||
| 0x00000039 | 1 | Child Type | Flag for file type | 01 | Directory |
| 0x0000003A | 4 | File Flags | Flags for tree and DAT structure | 00400600 | Has tree, has dir DAT, has children |
| 0x0000003E | varies | File Name | Length + file name | 034D4941 | 3 characters + “MIA” |
| 0x00000042 | varies | Found File Name | Length + found file name | 00 | Not applicable |
| 0x00000043 | 8 | File Modify Time | Last modified time in ticks, little endian | 0000000000000000 | Not applicable |
| 0x0000004B | 1 | DAT Status | Flag for DAT status | 00 | In DAT, collected |
| 0x0000004C | 1 | Got Status | Flag for Got status | 01 | Got |
| 0x0000004D | 1 | Tree Expanded | Boolean flag for directory expanded in tree | 01 | Expanded |
| 0x0000004E | 1 | Tree Selected | Flag for tree selection | 00 | Not selected |
| 0x0000004F | 4 | DAT Count | Number of DATs in the directory | 02000000 | 2 DATs |
| 0x00000053 | 8 | DAT Modify Time | Last modified time in ticks, little endian | 0016C6FEFDC0DA08 | 638034494360000000 ticks |
| 0x0000005B | 1 | DAT Rules | Flags for DAT rules applied | 05 | AutoAddDirectory, MultiDatOverride |
| 0x0000005C | 1 | DAT Attribute Count | Number of DAT attributes | 07 | 7 attributes |
| 0x0000005D | 1 | DAT Attribute ID | Flag for Dat attribute | 01 | DatName |
| 0x0000005E | varies | DAT Attribute Value | Length + attribute value | 094D616D6D61204D | 9 characters + “Mamma MIA” |
| 0x00000068 | 1 | DAT Attribute ID | Flag for Dat attribute | 02 | DatRootFullName |
| 0x00000069 | varies | DAT Attribute Value | Length + attribute value | 19446174526F6F74 | 19 characters + “DatRoot\MIA\Mamma-MIA.dat” |
| 0x00000083 | 1 | DAT Attribute ID | Flag for Dat attribute | 03 | RootDir |
| 0x00000084 | varies | DAT Attribute Value | Length + attribute value | 094D616D6D612D4D | 9 characters + “Mamma-MIA” |
| 0x0000008E | 1 | DAT Attribute ID | Flag for Dat attribute | 04 | Description |
| 0x0000008F | varies | DAT Attribute Value | Length + attribute value | 1C496E2074686520 | 28 characters + “In the DAT-Missing in Action” |
| 0x000000AC | 1 | DAT Attribute ID | Flag for Dat attribute | 06 | Version |
| 0x000000AD | varies | DAT Attribute Value | Length + attribute value | 034D4941 | 3 characters + “MIA” |
| 0x000000B1 | 1 | DAT Attribute ID | Flag for Dat attribute | 08 | Author |
| 0x000000B2 | varies | DAT Attribute Value | Length + attribute value | 084461745661756C | 8 characters + “DatVault” |
| 0x000000BB | 1 | DAT Attribute ID | Flag for Dat attribute | 0B | URL |
| 0x000000BC | varies | DAT Attribute Value | Length + attribute value | 107777772E646174 | 16 characters + “www.datvault.com” |
| 0x000000CD | 4 | Child Count | 4E000000 | 78 children | |
| … (end of group) | 4 | File Status | Status of the file / group | 00000000 | |
| File Type 1 - Directory within a DAT | |||||
| 0x000000D1 | 1 | Child Type | Flag for file type | 01 | Directory |
| 0x000000D2 | 4 | File Flags | Flags for tree and DAT structure | 00400600 | Has tree, has dir DAT, has children |
| 0x000000D6 | varies | File Name | Length + file name | 25456D754172632D | 37 characters + “EmuArc-Commodore 64 - CD-ROM, DVD-ROM” |
| 0x000000FC | varies | Found File Name | Length + found file name | 00 | Not applicable |
| 0x000000FD | 8 | File Modify Time | Last modified time in ticks, little endian | 0000000000000000 | Not applicable |
| 0x00000105 | 4 | DAT Index | Index number | 00000000 | Index 0 |
| 0x00000109 | 1 | DAT Status | Flag for DAT status | 00 | In DAT, collect |
| 0x0000010A | 1 | Got Status | Flag for Got status | 00 | Not Got |
| 0x0000010B | 1 | Tree Expanded | Boolean flag for directory expanded in tree | 01 | Expanded |
| 0x0000010C | 1 | Tree Selected | Flag for tree selection | 00 | Not selected |
| 0x0000010D | 4 | Child Count | Number of DATs in the directory | 01000000 | 1 child of the directory |
| … (end of group) | 4 | File Status | Status of the file / group | 00000000 | |
| File Type 2 - ZIP Archive | |||||
| 0x00000111 | 1 | Child Type | Flag for file type | 02 | ZIP archive |
| 0x00000112 | 4 | File Flags | Flags for tree and DAT structure | 00800500 | Has game, has DAT, has children |
| 0x00000116 | varies | File Name | Length + file name | 1E54686520434420 | 30 characters + “The CD Games Pack (Europe).zip” |
| 0x00000135 | varies | Found File Name | Length + found file name | 00 | Not applicable |
| 0x00000136 | 8 | File Modify Time | Last modified time in ticks, little endian | 0000000000000000 | Not applicable |
| 0x0000013E | 4 | DAT Index | Index number | 00000000 | Index 0 |
| 0x00000142 | 1 | DAT Status | Flag for DAT status | 00 | In DAT, collect |
| 0x00000143 | 1 | Got Status | Flag for Got status | 00 | Not Got |
| 0x00000144 | 1 | ZIP Status | Flag for ZIP status | 00 | None |
| 0x00000145 | 1 | Game Attribute Count | Number of game attributes | 01 | 1 attribute |
| 0x00000146 | 1 | Game Attribute ID | Flag for Game attribute | 01 | Description |
| 0x00000147 | varies | Game Attribute Value | Length + attribute value | 1A54686520434420 | 26 characters + “The CD Games Pack (Europe)” |
| 0x00000162 | 4 | Child Count | Number of children | 25000000 | 37 children |
| … (end of group) | 4 | File Status | Status of the file / group | 00000000 | |
| File Type 5 - File In ZIP | |||||
| 0x00000166 | 1 | Child Type | Flag for file type | 02 | File in ZIP |
| 0x00000167 | 4 | File Flags | Flags for tree and DAT structure | 0F000100 | Size, CRC, SHA1, MD5, HasDat |
| 0x0000016B | varies | File Name | Length + file name | 125363616E732F64 | 18 characters + “Scans/dsc00139.jpg” |
| 0x0000017E | varies | Found File Name | Length + found file name | 00 | Not applicable |
| 0x0000017F | 8 | File Modify Time | Last modified time in ticks, little endian | 0000000000000000 | Not applicable |
| 0x00000187 | 4 | DAT Index | Index number | 00000000 | Index 0 |
| 0x0000018B | 1 | DAT Status | Flag for DAT status | 05 | In DAT, MIA |
| 0x0000018C | 1 | Got Status | Flag for Got status | 00 | Not Got |
| 0x0000018D | 8 | Size | File size in bytes | 0ECB470000000000 | 4705038 bytes |
| 0x00000195 | 5 | CRC | Bytes + CRC32 hash | 04CD81D84C | “04” + CRC32 |
| 0x0000019A | 21 | SHA1 | Bytes + SHA1 hash | 207FF61CFF0659DE | “20” + SHA1 |
| 0x000001AF | 16 | MD5 | Bytes + MD5 hash | 16D491169D7CB4DA | “16” + MD5 |
| 0x000001C0 | 4 | File Status | Flags for file status | 1E000000 | SizeFromDAT, CRCFromDAT, SHA1FromDAT, MD5FromDAT |
| … (end of group) | 4 | File Status | Status of the file / group | 00000000 | |
| End of Cache | |||||
Enums
| Enum | Name | Description | Cache Value |
|---|---|---|---|
| DatData | DatName | DAT header: <name> tag | 01 |
| DatRootFullName | Full DATRoot path with DAT filename | 02 |
|
| RootDir | DAT header <rootdir> tag | 03 |
|
| Description | DAT header: <description> tag | 04 |
|
| Category | DAT header: <category> tag | 05 |
|
| Version | DAT header: <version> tag | 06 |
|
| Date | DAT header: <date> tag | 07 |
|
| Author | DAT header: <author> tag | 08 |
|
DAT header: <email> tag | 09 |
||
| HomePage | DAT header: <homepage> tag | 10 |
|
| URL | DAT header: <url> tag | 11 |
|
| FileType | 12 |
||
| MergeType | 13 |
||
| SuperDat | 14 |
||
| DirSetup | 15 |
||
| Header | 16 |
||
| SubDirType | 17 |
||
| DatStatus | InDatCollect | The file is in the DAT and collected | 00 |
| InDatMerged | The file is in the DAT but merged | 01 |
|
| InDatBad | The file is in the DAT but its corrupt | 02 |
|
| NotInDat | The file is not in the DAT | 03 |
|
| InToSort | The file is in a ToSort directory | 04 |
|
| InDatMIA | The file is in the DAT but MIA | 05 |
|
| FileType | Unknown | ??? | 00 |
| Dir | The item is a directory | 01 |
|
| Zip | The item is a ZIP file | 02 |
|
| SevenZip | The item is a 7z file | 03 |
|
| File | The item is a file | 04 |
|
| ZipFile | The item is a file within a ZIP archive | 05 |
|
| SevenZipFile | The item is a file within a 7z archive | 06 |
|
| GotStatus | NotGot | The file is missing | 00 |
| Got | The file is present | 01 |
|
| Corrupt | The file is corrupt | 02 |
|
| FileLocked | The file is locked | 03 |
|
| HeaderFileType | Nothing | No header | 00 |
| ZIP | ZIP archive | 01 |
|
| GZ | GZip archive | 02 |
|
| SevenZip | 7z archive | 03 |
|
| RAR | RAR archive | 04 |
|
| CHD | CHD file | 05 |
|
| A7800 | Atari 7800 | 06 |
|
| Lynx | Atari Lynx | 07 |
|
| NES | Nintendo Entertainment System | 08 |
|
| FDS | Nintendo Famicom Disk System | 09 |
|
| PCE | NEC PC Engine | 0A |
|
| PSID | Commodore 64 SID (Sound Interface Device) Audio | 0B |
|
| SNES | Super Nintendo Entertainment System | 0C |
|
| SPC | SNES Audio | 0D |
|
| HeaderMask | ??? | ||
| Required | ??? | ||
| TreeSelect | Unselected | The tree branch is selected | 00 |
| Selected | The tree branch is unselected | 01 |
|
| Locked | The tree branch is locked in read-only mode | 02 |
|
| ZipStatus | None | ??? | 00 |
| TrrntZip | TorrentZip or RV7Z | 01 |
|
| ExtraData | ??? | 02 |
|
| Trrnt7Zip | Torrent7Zip | 03 |
cache_structure.txt · Last modified: 2022/11/24 14:30 by johnsanc