Cart DB #262: 4 in 1 soccer

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	6264
IC2	YD925-A(27F080)
IC3	C5052-13(DIL40)
IC4	YD925-B(27F080)
IC5	7402
IC6	4013
IC7	74125
C1	?
C2	100n
C3	100n
CART1	FAMICOM_CART
D1
D2
D3
G1	CR2032
R1	1k

Name

Value

IC1

IC2

IC3

IC4

IC5

IC6

IC7

100n

CART1

FAMICOM_CART

CR2032

This reset-baset cartridge consists of 4 games and uses mysterious DIP40 "C5052-13" chip (and a battery backup which is rare for pirate games). [url=https://obrazki.elektroda.pl/7320428500_1567071672.jpg][img]https://obrazki.elektroda.pl/7320428500_1567071672_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/8122479100_1567071674.jpg][img]https://obrazki.elektroda.pl/8122479100_1567071674_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7153343200_1567071675.jpg][img]https://obrazki.elektroda.pl/7153343200_1567071675_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/9593876200_1567071676.jpg][img]https://obrazki.elektroda.pl/9593876200_1567071676_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7551899400_1567071728.png][img]https://obrazki.elektroda.pl/7551899400_1567071728_thumb.jpg[/img][/url] At first I thought it is MMC3 clone, but when I dumped the games, one of them turned out to be MMC1: [code] Downtown - Nekketsu Koushin Kyoku - Soreyuke Dai Undoukai (J) | MMC3 Downtown Special - Kunio Kun no Jidaigeki Dayo Zenin Shuugou! (J) | MMC3 + WRAM + battery backup Nekketsu Kakutou Densetsu (J) | MMC3 Nekketsu Koukou Dodgeball Bu (J) | MMC1 [/code] Depending on the pin 2, it switches its functionality between MMC1 (disconnected) and MMC3 (VCC). The connection was unclear to me: * they used additional 74125 buffer just to invert the signal (three other 74125's gates are unused), but there was still one 7402 NOR unused that could be utilized for that purpose. * the output of 74125 is not pulled down which causes the signal to be at 2.5V when in MMC1 mode * CPU-A1 and CPU-A12 are wired into mapper but neither MMC1 nor MMC3 needs it When in MMC1 mode, PRG A18 is at GND and so does CHR A17. [img]https://obrazki.elektroda.pl/8424402400_1567071050.png[/img] [code] .--\/--. +5V -- |01 40| <- CPU A0 mode -> |02 39| <- CPU A1 PRG A13 <- |03 38| <- M2 PRG A14 <- |04 37| <- CPU A12 PRG A15 <- |05 36| <- CPU A13 PRG A16 <- |06 35| <- CPU A14 PRG A17 <- |07 34| <- CPU D4 PRG A18 <- |08 33| <- CPU D5 PRG /CE <- |09 32| <- CPU /ROMSEL WRAM +CE <- |10 31| <- CPU D6 CHR A10 <- |11 30| <- CPU D7 CHR A11 <- |12 29| <- CPU D0 CHR A12 <- |13 28| <- CPU R/!W CHR A13 <- |14 27| -> CIRAM A10 CHR A14 <- |15 26| <- CPU D1 CHR A15 <- |16 25| <- CPU D2 CHR A16 <- |17 24| <- CPU D3 CHR A17 <- |18 23| -> PPU A12 /IRQ <- |19 22| -> PPU A11 GND -- |20 21| -> PPU A10 `------' C5052-13 [/code] Then I tried pulling pin 2 to ground (using 100R resistor for safety) and it seems to go into third mode. I thought it might be VRC2 or VRC4. * Writing $00/$01/$02/$03 to $9000/$9001/$9002/$9003 switches between V and H mirroring (so it seemed to be VRC2 as VRC4 has also 0/1 mode), but * Writing to any of $X00Y where X=8/9/a/b/c/d/e/f and Y=0/1/2/3 does not seem to alter PRG bank * Writing to $b000/b001 (and $b002/$b003) manipulates CHR bank at $400. * When in MMC3/MMC1 mode - WRAM at $6000-$7fff is enabled and when in this semi-VRC mode, it is disabled Either the VRC2 mode is broken, or this is not VRC chip.

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
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