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patterns: Added .nes pattern file (#166)

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* Add files via upload

* Update README.md

Added nes.hexpat to list of hex patterns

* Fix indenting of hex patterns list

Moved nes.hexpat below NE.hexpat
This commit is contained in:
gmestanley
2023-09-24 14:57:20 -03:00
committed by GitHub
parent c0c117ac19
commit 734afdf500
2 changed files with 88 additions and 0 deletions
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1
README.md
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@@ -70,6 +70,7 @@ Everything will immediately show up in ImHex's Content Store and gets bundled wi
| NACP | | [`patterns/nacp.hexpat`](patterns/nacp.hexpat) | Nintendo Switch NACP files |
| NBT | | [`patterns/nbt.hexpat`](patterns/nbt.hexpat) | Minecraft NBT format |
| NE | | [`patterns/ne.hexpat`](patterns/ne.hexpat) | NE header and Standard NE fields |
| nes | | [`patterns/nes.hexpat`](patterns/nes.hexpat) | .nes file format |
| NRO | | [`patterns/nro.hexpat`](patterns/nro.hexpat) | Nintendo Switch NRO files |
| NTAG | | [`patterns/ntag.hexpat`](patterns/ntag.hexpat) | NTAG213/NTAG215/NTAG216, NFC Forum Type 2 Tag compliant IC |
| OGG | `audio/ogg` | [`patterns/ogg.hexpat`](patterns/ogg.hexpat) | OGG Audio format |

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patterns/nes.hexpat Normal file
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@@ -0,0 +1,87 @@
#pragma author gmestanley
#pragma description .nes file format
#include <std/mem.pat>
#include <std/string.pat>
bitfield iNES07Flags {
mirroringIsVertical : 1;
batterybackedPRGRAM : 1;
trainerOf512Bytes : 1;
ignoreMirroring : 1;
mapperLowerNybble : 4;
vsUnisystem : 1;
playchoice10 : 1;
nes2Format : 2 [[name("nes2.0Format")]];
mapperHigherNybble : 4;
} [[name("iNES0.7Flags")]];
bitfield Flags9 {
isPAL : 1;
padding : 7;
};
bitfield Flags10 {
tvSystem : 2;
padding : 2;
prgRAM : 1;
busConflicts : 1;
padding : 2;
};
struct iNESFlags {
iNES07Flags ines07Flags [[name("ines0.7Flags")]];
if (!ines07Flags.nes2Format) {
u8 prgRAM8KBMultiplier;
Flags9 flags9;
Flags10 flags10;
restLength = 5;
}
else {
restLength = 9;
}
};
u8 restLength;
struct Header {
char identifier[4];
u8 prgROM16KBMultiplier;
u8 chrROM8KBMultiplier;
iNESFlags inesFlags;
char rest[restLength];
};
Header header @ 0x00;
enum EncodingType : u8 {
ASCII = 1
};
struct OfficialHeader {
char title[16] [[hex::spec_name("Title Registration Area")]];
u16 programChecksum;
u16 characterChecksum;
u8 memorySize [[hex::spec_name("Cartridge Memory Size")]];
u8 cartridgeType;
EncodingType encodingType [[hex::spec_name("Registration Character Type Distinction")]];
u8 titleLength [[hex::spec_name("Registration Characters Count")]];
u8 makerID [[hex::spec_name("Maker Code")]];
u8 complementaryChecksum;
};
union OfficialHeaderUnion {
u8 miscellaneousData[26];
OfficialHeader officialHeader;
};
struct PRGROM {
u8 data[16384*header.prgROM16KBMultiplier-32];
OfficialHeaderUnion officialHeaderUnion;
u16 nmi;
u16 entryPoint;
u16 externalIRQ;
};
PRGROM prgROM @ sizeof(header);
u8 chrROM[8192*header.chrROM8KBMultiplier] @ sizeof(header)+sizeof(prgROM);