Cart DB #237: Super Mario Bros 2 (J) (small)

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	27128
IC2	27256
IC3	27256
IC4	2764
IC5	16L8
IC6	4020
IC7	74139
IC8	7400
C1	470p
CART1	FAMICOM_CART
D1
D2
D3
D4
D5
D6
R1	510
R2	2.2k

Name

Value

IC1

IC2

IC3

IC4

IC5

IC6

IC7

IC8

470p

CART1

FAMICOM_CART

510

2.2k

O1 <= '0' when (!ASEL0 & CPU_D0 & !CPU_D1 & !CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) else '1' when (!ASEL0 & !CPU_D0 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) | (!ASEL0 & CPU_D1 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) | (!ASEL0 & CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL); O2 <= '0' when (!ASEL0 & CPU_D0 & CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) else '1' when (!ASEL0 & !CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) | (!ASEL0 & !CPU_D0 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL); O3 <= '0' when (!ASEL0 & CPU_D1 & CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) else '1' when (!ASEL0 & !CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) | (!ASEL0 & !CPU_D1 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL); RESET <= '0' when (!ASEL1 & CPU_D0 & CPU_D1 & !CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) else '1' when (!ASEL1 & !CPU_D1 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) | (!ASEL1 & !CPU_D0 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL) | (!ASEL1 & CPU_D2 & !CPU_RnW & !CPU_A12 & !CPU_A13 & CPU_A14 & CPU_nROMSEL); IF TAKING CARE RESET IF NOT TAKING CARE RESET PRG-A13 = (O3 & O2 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | | PRG_A13 = (O3 & !O2 & O1 & !CPU_A13) | (O1 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | | (!O3 & O2 & O1 & !CPU_A13) | (O3 & O2 & !CPU_A13 & !CPU_A14) | | (O3 & O2 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | (O3 & O2 & !CPU_A14 & CPU_nROMSEL) | | (O3 & O2 & !O1 & !CPU_A13) | (O3 & O2 & !CPU_A13 & CPU_nROMSEL) | | (O1 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | (O1 & !CPU_A13 & !CPU_A14) | | (O3 & O2 & !CPU_A14 & CPU_nROMSEL) | (O1 & !CPU_A14 & CPU_nROMSEL) | | (O1 & !CPU_A14 & CPU_nROMSEL) | (O1 & !CPU_A13 & CPU_nROMSEL); | (O1 & !CPU_A13 & !CPU_A14) | | (O1 & !CPU_A13 & CPU_nROMSEL); | PRGSEL0 = (O3 & O2 & !CPU_A12 & !CPU_A13 & CPU_nROMSEL) | | PRGSEL0 = (O1 & !CPU_A12 & !CPU_A13 & CPU_nROMSEL) | (O1 & !CPU_A12 & !CPU_A13 & CPU_nROMSEL) | | (O3 & O2 & !CPU_A14 & CPU_nROMSEL) | (O3 & O2 & !CPU_A13 & CPU_A14 & !CPU_nROMSEL) | | (O1 & !CPU_A13 & CPU_A14 & !CPU_nROMSEL) | (O3 & O2 & !CPU_A14 & CPU_nROMSEL) | | (O3 & O2 & !CPU_A12 & !CPU_A13 & CPU_nROMSEL) | (O1 & !CPU_A13 & CPU_A14 & !CPU_nROMSEL) | | (O1 & !CPU_A14 & CPU_nROMSEL); (O1 & !CPU_A14 & CPU_nROMSEL); | | PRGSEL1 = (O3 & O2 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | | PRGSEL1 = (O3 & O2 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | (O1 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | | (O1 & CPU_A13 & CPU_A14 & !CPU_nROMSEL) | (O3 & O2 & !CPU_A14 & CPU_nROMSEL) | | (O3 & O2 & !CPU_A14 & CPU_nROMSEL) | (O3 & O2 & !CPU_A13 & CPU_nROMSEL) | | (O3 & O2 & !CPU_A13 & CPU_nROMSEL) | (O1 & !CPU_A14 & CPU_nROMSEL) | | (O1 & !CPU_A14 & CPU_nROMSEL) | (O1 & !CPU_A13 & CPU_nROMSEL); | (O1 & !CPU_A13 & CPU_nROMSEL); | PRG-A14 = (O3 & O2 & CPU_A13 & CPU_A14) | | PRG_A14 = (O3 & O2 & !O1 & CPU_A14) | (RESET & !O3 & !O2 & O1 & CPU_A14) | | (O3 & O2 & CPU_nROMSEL) | (O3 & O2 & CPU_nROMSEL) | | (!O2 & O1 & CPU_A14) | (O1 & CPU_A13 & CPU_A14) | | ( O1 & CPU_nROMSEL) | (O1 & CPU_nROMSEL); | (O1 & CPU_A13 & CPU_A14); | --- R/!W A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 !ASEL0 0 0 0 1 0 0 0 1 0 !ASEL1 1 0 0 1 0 0 0 1 0 O1/O2/O3 0 0 1 0 0 x x x D2 D1 D0 | O3 O2 O1 0 0 0 | 1 1 1 7 0 0 1 | 1 1 0 6 0 1 0 | 1 1 1 7 0 1 1 | 1 1 1 7 1 0 0 | 1 1 1 7 1 0 1 | 1 0 1 5 1 1 0 | 0 1 1 3 1 1 1 | 0 0 1 1 Memory map: $5000 | $6000 | $7000 | $8000 | $9000 | $a000 | $b000 | $c000 | $d000 | $e000 | $f000 $11 $4 $5 $2 $3 $0 $1 {$4022} {$4022} $12 $13 + 1 Registers: $4022 [.... ..PPP] - set PRG bank, note that this reg is scrambled so that: written value at D2-D0: 0 1 2 3 4 5 6 7 value latched at O3-O1: 7 6 7 7 7 5 3 1 bank set to $c000 : $8 $6 $8 $8 $8 $e $a $c $4122 [.... ..III] - enable (3) or disable+ack (0/1/2/4/5/6/7) interrupt When enabled, interrupt is triggered after 4096 rising edges of M2 (when not acked, it will be automatically acked after another 4096 rising edges) 0000 1000 2000 3000 4000 5000 17 6000 4 7000 5 8000 2 9000 3 a000 0 b000 1 c000 1=>12 3=>10 5=>14 6=>6 7=>8 d000 1=>13 3=>11 5=>15 6=>7 7=>9 e000 18 f000 19 done

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#
PCB marks
Tags
Chips

Bob:	2023-04-21 03:41:28
Hello Krzysiobal Can you create a JED file? This is too difficult for me.