Cart DB #435: Titanic 1912

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	27F080
IC2	62256
IC3	62256
IC4	74273
IC5	74153
IC6	7410
IC7	7432
BAT1	CR2032
C1	?
C2	?
CART1	FAMICOM_CART
D1
D2
D3
R1	1k
R2	4,7k
R3	2k
R4	100k
R5	4,7k
R6	4,7k

Name

Value

IC1

IC2

IC3

IC4

IC5

IC6

IC7

BAT1

CR2032

CART1

FAMICOM_CART

4,7k

100k

4,7k

http://forums.nesdev.com/viewtopic.php?f=9&t=19309 [url=https://obrazki.elektroda.pl/4943652900_1569007223.jpg][img]https://obrazki.elektroda.pl/4943652900_1569007223_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/4927691000_1569008045.jpg][img]https://obrazki.elektroda.pl/4927691000_1569008045_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/9633304400_1569008048.png][img]https://obrazki.elektroda.pl/9633304400_1569008048_thumb.jpg[/img][/url] [code] fedbca9876543210 A~[100....P.PPPPpMv] (initialized to zeros on powerup & soft reset) | ||||||| | ||||||+- 0=16K, 1=32K | |||||+-- 0=V, 1=H | ||||| +-+++++--- PRG-A19..A14 (p ignored in 32K mode) ++---- RAM-A14..A13 ?? +--- when 1 - locks further writes until powerup/soft reset [/code] My doubts/quirks: * The register is present only at $8000-$9fff, * There are bus conflicts * there might be one or two bits controlling WRAM (vias for both PRG-A15 and PRG-A14 suspiciously are present under RAM chip) * /CS of WRAM is pulled-up to VCC, not the battery backed up voltage (does savestate corruption occur?) * instead of M2, /RESET is taken into decoding of WRAM /CS (might be more corruption-proof?) * setting the p bit permanently locks any further writes (no matter if it is in 32K or 16K mode), so the only way of dumping it is to use 32K banks and keep this bit always at 0. * are both VCC pins (30, 31) shorted? * rightmost resistor (R2=4.7k) pulls up something to VCC but I dont have idea what (is it placed between GND and VCC?)

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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