GRAF:ZIP Archive

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ZIP, ZIPFS, PK3, PK4, PAK, DAT

Format type: Archive
Endianness: Little-endian

Format Specifications

// for each file

char {4} - Signature (0x04034b50)

uint8 {1} - Version needed to extract (major is X/10, minor is X MOD 10)

uint8 {1} - File attribute support for different OSes

uint16 {2} - General purpose bit flag

uint16 {2} - Compression method

uint16 {2} - Last mod file time

uint16 {2} - Last mod file date

uint32 {4} - CRC32

uint32 {4} - Compressed File Size

uint32 {4} - Decompressed File Size

uint16 {2} - Filename Length

uint16 {2} - Extra Field Length (usually 0)

char {X} - Filename

char {X} - Extra field (usually non-existant)

byte {X} - File Data

// for each directory

char {2} - Header (PK)

uint32 {4} - Entry Type (513 = Directory Entry)

uint16 {2} - Unknown (20)

uint16 {2} - Unknown (2)

uint16 {2} - Unknown (8)

uint64 {8} - Checksum?

uint32 {4} - Compressed File Size

uint32 {4} - Decompressed File Size

uint32 {4} - Filename Length

byte {10} - null

uint32 {4} - File Offset (points to PK for this file in the directory)

char {X} - Filename

char {2} - Header (PK)
uint32 {4} - Entry Type (1541 = Archive Entry)
uint16 {2} - null
uint64 {8} - Checksum?
uint32 {4} - Length Of File Data (archive size excluding the directory)

uint16 {2} - null

Notes and Comments

This is a generic ZIP archive.

MultiEx BMS Script

Treated as PKZip file.

<bms author="PK" ext="zipfs" games="'Duke Nukem: Manhattan Project','18 Wheels Of Steel: Across America','18 Wheels Of Steel: Pedal To The Metal'" platforms="'PC','PC','PC'" version="1.0" verbose="no" silence="no"> External: PKZip</bms>