MASKROM

A Mask ROM is a type of read-only memory chip that is used in almost all SNES games. The Mask ROM contains the game binary. When dumped, a ROM image file is created. Since the game binaries are usually on Mask ROMs, the term "ROM" is synonymous with the dumped game binary, although this is not the technical term. Information on Mask ROM chips on the internet is very limited, so I will not claim that I have all the information correct. One of my main sources is bootgod's NES Cart DB.

LH538

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x100000

Date format: YYWWx

Variables: Full part #, Serial code, Date code

LH537

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x200000

Date format: YYWWx

Variables: Full part #, Serial code, Date code

LH536

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x300000

Date format: YYWWx

Variables: Full part #, Serial code, Date code

LH535

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x400000

Date format: YYWWx

Variables: Full part #, Serial code, Date code

LH534

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x80000

Date format: YYWWx

Variables: Full part #, Serial code, Date code, Chip #

LH532

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x40000

Date format: YYWWx

Variables: Full part #, Serial code, Date code, Chip #

LHMN5T

Chip type: MASKROM

Manufacturer: Sharp

Size: 0x400000

Date format: YYWW

Variables: Full part #, Serial code, Date code

UPD23C4013ACZ

Chip type: MASKROM

Manufacturer: NEC

Size: 0x80000

Date format: YYWWxxxxx

Variables: Full part #, Serial code, Date code

UPD23C8013BCZ

Chip type: MASKROM

Manufacturer: NEC

Size: 0x100000

Date format: YYWWxxxxx

Variables: Full part #, Serial code, Date code

MB838000

Chip type: MASKROM

Manufacturer: Fujitsu

Size: 0x80000

Date format: YYWW xxx

Variables: Full part #, Serial code, Date code, Chip #

M531610D

Chip type: MASKROM

Manufacturer: Oki Electric Industry Co.,Ltd.

Size: 0x100000

Date format: YWWxxxx

Variables: Full part #, Serial code, Date code

TC538003AP

Chip type: MASKROM

Manufacturer: Toshiba

Size: 0x80000

Date format: YYWW xxx

Variables: Full part #, Serial code, Date code, Chip #, unknown label

TC5316003CF

Chip type: MASKROM

Manufacturer: Toshiba

Size: 0x100000

Date format: YYWW xxx

Variables: Serial code, Date code, Chip #, unknown label

CXK384002

Chip type: MASKROM

Manufacturer: Sony

Size: 0x80000

Date format: YMxxx

Variables: Full part #, Serial code, Date code, unknown label

KM23C4001B

Chip type: MASKROM

Manufacturer: Samsung

Size: 0x40000

Variables: Serial code, Chip #

KM23C8001A

Chip type: MASKROM

Manufacturer: Samsung

Size: 0x80000

Variables: Serial code, Chip #

Majesco type #1

Chip type: MASKROM

Manufacturer: Majesco

Size: 0x200000

Variables: Serial code, Game title

HN62318DP70

Chip type: MASKROM

Manufacturer: Hitachi

Size: 0x80000

Date format: YMW x

Variables: Serial code, Date code, Game title

MX23C8001-12

Chip type: MASKROM

Manufacturer: Macronix International

Size: 0x80000

Date format: xYYWW-x

Variables: Serial code, Date code, unknown label

MX23C3201-12

Chip type: MASKROM

Manufacturer: Macronix International

Size: 0x200000

Date format: xYYWW-x

Variables: Serial code, Date code, unknown label

MX23C3202-11

Chip type: MASKROM

Manufacturer: Macronix International

Size: 0x200000

Date format: xYYWW-x

Variables: Serial code, Date code, unknown label

N-4013BGW-J03

Chip type: MASKROM

Manufacturer: NEC

Size: 0x40000

Date format: YYWWxxxxx

Variables: Serial code, Date code, Chip #

N-8013AGW-J04

Chip type: MASKROM

Manufacturer: NEC

Size: 0x80000

Date format: YYWWxxxxx

Variables: Serial code, Date code

N-8013BGW-J05

Chip type: MASKROM

Manufacturer: NEC

Size: 0x80000

Date format: YYWWxxxxx

Variables: Serial code, Date code, Chip #

CAT438010

Chip type: MASKROM

Manufacturer: Oki Electric Industry Co.,Ltd.

Size: 0x80000

Date format: xYWW xx xx

Variables: Full part #, Serial code, Date code, Chip #