Cart DB #291: Metroid

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	6264A
IC2	27512
IC3	KS204-MMC3
IC4	6264A
IC5	74138
IC6	7408
IC7	7486
C1	10u
C2	-
C3	-
C4	-
CART1	FAMICOM_CART
R1	100R
R2	4,7k

Name

Value

IC1

IC2

IC3

IC4

IC5

IC6

IC7

10u

CART1

FAMICOM_CART

100R

4,7k

Kaiser KS 204 chip I finally was able to obtain one game with KS 204 Kaiser chip and analyze it. [url=https://obrazki.elektroda.pl/1203224600_1567180289.jpg][img]https://obrazki.elektroda.pl/1203224600_1567180289_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/2811728300_1567180291.jpg][img]https://obrazki.elektroda.pl/2811728300_1567180291_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/9834154900_1567180316.jpg][img]https://obrazki.elektroda.pl/9834154900_1567180316_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7932394000_1567180318.jpg][img]https://obrazki.elektroda.pl/7932394000_1567180318_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/1499492800_1567180319.png][img]https://obrazki.elektroda.pl/1499492800_1567180319_thumb.jpg[/img][/url] The KS204 chip is nothing more but a Kaiser clone of Tengen MIMIC-1 MMC3 predessor ([url=http://wiki.nesdev.com/w/index.php/INES_Mapper_206]INES Mapper 206[/url]), known also as [url=http://wiki.nesdev.com/w/index.php/Namcot_108_family_pinout]NTDEC 8701[/url]. The only difference is lack of PRG/CE pin (instead, external RESET is present) and shuffled pinout. [code] .--\/--. M2 -> |01 28| -- +5V CPU R/!W -> |02 27| <- RESET CPU A14 -> |03 26| <- CPU D3 CPU A13 -> |04 25| -> CHR A15 CPU D1 -> |05 24| -> CHR A14 CPU D0 -> |06 23| -> CHR A13 CPU !RMS -> |07 22| -> CHR A12 CPU D4 -> |08 21| -> CHR A11 CPU A0 -> |09 20| -> CHR A10 PRG A16 <- |10 19| <- CPU D5 PRG A15 <- |11 18| <- PPU A12 PRG A14 <- |12 17| <- PPU A11 PRG A13 <- |13 16| <- PPU A10 GND -- |14 15| <- CPU D2 `------' KS 204 [/code] Details: * Latching values into registers occurs on the rising edge of its decoding signal, for example register $8000 has decoding signal like: CLK <= '0' when /ROMSEL = 0 and M2 = 1 and R/W = 0 and A1 = 0 and A14 = 0 and A13 = 0 else '1' This can be precisely simulated using 74138+74574: [url=https://obrazki.elektroda.pl/2030486500_1567158285.png][img]https://obrazki.elektroda.pl/2030486500_1567158285_thumb.jpg[/img][/url] * PRG bank address lines does not take CPU-!ROMSEL into account so $0000-$7fff mirrors $8000-$ffff (important when external logic enables ROM under $8000) However, the "Metroid [FDS port], PCB: KS-7037)" games that uses it, connects it differently, which results in the following register order: [code] $8000.R2 [.......I] - nametable for $2000 $8000.R3 [.......J] - nametable for $2800 $8000.R4 [.......K] - nametable for $2400 $8000.R5 [.......L] - nametable for $2c00 $8001.R6 [....ABCD] $8001.R7 [....EFGH] $6000 $7000 $8000 $9000 $a000 $b000 $c000 $d000 $e000 $f000 ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- RAM ROM ROM ROM ROM RAM ROM ROM ROM ROM 0 11111 ABCD0 ABCD1 01100 1 EFGH0 EFGH1 01110 01111 <- 4 kiB Bank ^ ^ ^ ^ +-----+-----------------+-----+------------------- those bits are inverted Writing to $7000-$7fff can cause bus-conflicts (ROM is enabled at that region during writes), while writing to other regions doesn't. The UNL-KS7037 FCEUX mapper implementation does not invert those bits but that's because my implementation respects the PRG-A16 address line (just like the EPROM was dumped first and then mapper was implemented to match it) [/code]

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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Original mapper#
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