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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 #

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