Cart DB #229: Super Mario Bros 2 (J) (big)

Notes for chip search:

Use "+" as delimeter for all fields (except "cart name", where space is used); if many values are entered, all of them must appear in the cartridge then; case is not sensitive
"Mapper" is the actual mapper used by this cartridge hardware (might not match the one at wiki.nesdev.com, as at the moment I was analyzing this cartridge, there was no mapper assigned to it, so I had to assign my own number for testing)
"Original mapper" is the mapper used by licensed version of this game (for multicarts, it refers to mapper of the inside games, so 0+2 means this cartridge can run NROM+UNROM games)
Order in which you put values doesn't matter (you can write 7400+74138+7400 or 7400+7400+74138 to search for a cartridge that contains at least two 7400 chips and one 74138
Some chips (like PAL16*8) appear in cartridges as 16V8 or 16L8, so be sure to check both posibilities
Same goes for memories - type 27F080 to search for 32 pin memories, 27512 for 28 pin with two chip enables or MASKROM_1M_DIP28 for 28 pin with one chip enable
Same goes for mappers - some examples: AX5904(MMC1), AX5202P(MMC3), PT8154BM (9112MMC3), AX5208C(VRC4), 23C3662(VRC2)
Good news is that you can use wildcards, so 74139+*MMC3* will search for any cartrige that has at least one 74139 and MMC3 chip in any version

Name	Value
IC1	27256(27512)
IC10	7432
IC2	27256(27512)
IC3	27512
IC4	27512
IC5	2764
IC6	16L8
IC7	16L8
IC8	4020
IC9	74139
CART1	FAMICOM_CART
JP1	OPEN
JP2	CLOSED

Name

Value

IC1

IC10

IC2

IC3

IC4

IC5

IC6

IC7

IC8

IC9

CART1

FAMICOM_CART

JP1

OPEN

JP2

CLOSED

### pal b8636 ### n5000 = (!CPU_A14) | (!CPU-A12) | (!CPU_nROMSEL) | (CPU_A13); PRG1_nCE = (!CPU_A13 & CPU_A14 & SIG33) | (!CPU_nROMSEL & CPU_A13 & CPU_A14) | (CPU_nROMSEL & !CPU_A14) | (CPU_nROMSEL & !CPU_A13) | (!CPU_RnW); PRG1_A14 = (CPU_nROMSEL) | (CPU_A14); PRG1_A13 = (CPU_nROMSEL & !CPU_A14) | (!CPU_nROMSEL & CPU_A14) | (!CPU_A13); n4022 = (!CPU-A5) | (!CPU-A1) | (!CPU_A14) | (!CPU_nROMSEL) | (CPU-A12) | (CPU_A13) | (CPU_RnW) | (A6_OR_A7) | (A2_OR_A0) | (A4_OR_A3) | (CPU-A8); n4122 = (!CPU-A8) | (!CPU-A5) | (!CPU-A1) | (!CPU_A14) | (!CPU_nROMSEL) | (CPU-A12) | (CPU_A13) | (CPU_RnW) | (A6_OR_A7) | (A2_OR_A0) | (A4_OR_A3); // n4022: 0 when cpu_write @ 0100xxx000100010 else '1' ;$4022, mask=$f1ff // n4122: 0 when cpu_write @ 0100xxx100100010 else '1' ;$4122, mask=$f1ff // n5000: 0 when cpu_r/w @ 0101xxxxxxxxxxxx else '1' ;$5000-5fff ### pal b8632 # O4 <= '0' when (CPU_D1 & CPU_D2 & !n4022) else '1' when (!CPU_D2 & !n4022) | (!CPU_D1 & !n4022); O5 <= '0' when (CPU_D0 & CPU_D2 & !n4022) else '1' when (!CPU_D2 & !n4022) | (!CPU_D0 & !n4022); SIG33 <= '0' when (CPU_D0 & !CPU_D1 & !CPU_D2 & !n4022) else '1' when (!CPU_D0 & !n4022) | (CPU_D1 & !n4022) | (CPU_D2 & !n4022); RESET <= '0' when (CPU_D0 & CPU_D1 & !CPU_D2 & !n4122) else '1' when (!CPU_D1 & !n4122) | (!CPU_D0 & !n4122) | (CPU_D2 & !n4122); PRG2_nCE = (O5 & O4 & !SIG33) | (SIG33 & !PRG1_nCE) | (SIG33 & !CPU_A14) | ( SIG33 & CPU_nROMSEL); PRG2_A14 = (O5 & O4 & !SIG33) | (!O5 & SIG33) | (SIG33 & !PRG1_nCE) | (SIG33 & !CPU_A14) | (SIG33 & !n5000) | (SIG33 & CPU_nROMSEL); PRG2_A13 = (O5 & O4 & !SIG33) | (SIG33 & !PRG1_nCE) | (SIG33 & !CPU_A14) | ( SIG33 & !n5000) | (SIG33 & CPU_nROMSEL) | (O5 & !O4 & SIG33) | (!O5 & O4 & SIG33); nIRQ = (!CPU_D0) | (!M2_8192) | (RESET); --- Value written at $4022: 0 1 2 3 4 5 6 7 Value stored at O4: 1 1 1 1 1 1 0 0 Value stored at O5: 1 1 1 1 1 0 1 0 Value stored at SIG33: 1 0 1 1 1 1 1 1 Value written at $4122: 0 1 2 3 4 5 6 7 Value stored at RESET: 1 1 1 0 1 1 1 1 $6000 | $8000 | $a000 | $c000 | $e000 PRG1_b2 PRG1_b1 PRG1_b0 (*) PRG4_b1 (*) = PRG2_b0 when $4022 = 0/2/3/4 PRG1_b3 when $4022 = 1 PRG2_b3 when $4022 = 5 PRG2_b1 when $4022 = 6 PRG2_b2 when $4022 = 7 if Merging PRG1+PRG2+PRG4+PRG3 (PRG3 is never enabled, so it can be skipped), then it is: $5000 |$6000 | $8000 | $a000 | $c000 | $e000 20 2 1 0 {$4022} 9 Value written to $4022: 0 1 2 3 4 5 6 7 Bank set at $c000 : 4 3 4 4 4 7 5 6

Cart name		Notes for chip search: Use "+" as delimeter for all fields (except "cart name", where space is used); if many values are entered, all of them must appear in the cartridge then; case is not sensitive "Mapper" is the actual mapper used by this cartridge hardware (might not match the one at wiki.nesdev.com, as at the moment I was analyzing this cartridge, there was no mapper assigned to it, so I had to assign my own number for testing) "Original mapper" is the mapper used by licensed version of this game (for multicarts, it refers to mapper of the inside games, so 0+2 means this cartridge can run NROM+UNROM games) Order in which you put values doesn't matter (you can write 7400+74138+7400 or 7400+7400+74138 to search for a cartridge that contains at least two 7400 chips and one 74138 Some chips (like PAL168) appear in cartridges as 16V8 or 16L8, so be sure to check both posibilities Same goes for memories - type 27F080 to search for 32 pin memories, 27512 for 28 pin with two chip enables or MASKROM_1M_DIP28 for 28 pin with one chip enable Same goes for mappers - some examples: AX5904(MMC1), AX5202P(MMC3), PT8154BM (9112MMC3), AX5208C(VRC4), 23C3662(VRC2) Good news is that you can use wildcards, so 74139+MMC3* will search for any cartrige that has at least one 74139 and MMC3 chip in any version
Mapper#
Original mapper#
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