Cart DB #93: Downtown Special Kunio-kun no Jidaigeki Dayo Zenin Shuug

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	74138
IC10	27512
IC11	27512
IC2	7474
IC3	4020
IC4	74193
IC5	NTDEC8701
IC6	74259
IC7	74161
IC8	74151
IC9	7402
CART1	FAMICOM_CART

Name

Value

IC1

IC10

IC11

IC2

IC3

IC4

IC5

IC6

IC7

IC8

IC9

CART1

FAMICOM_CART

http://forum.pegasus-gry.com/index.php/topic,7281.msg68830.html#msg68830 Kilka lat temu pozyskałem ciekawe pcb bez obudowy. Niestety, gra jest uszkodzona. Już na pierwszy rzut oka widać, że mamy do czynienia z nietypowym „hardware”. Na początek chciałem odczytać dane z prom-ów PRG oraz CHR aby ustalić tytuł gry. Pamięć PRG posiadała wewnętrzne zwarcie w układzie scalonym, a więc odczyt był niewykonalny i ujawniła się przyczyna niesprawności. Kość z grafiką jakoś udało się skopiować. Analiza danych zajęła trochę czasu, ale było warto poznać tajemniczy tytuł; Downtown Special Kunio-kun no Jidaigeki Dayo Zenin Shuugou http://images.tinypic.pl/i/00957/q6bdjert7jyx.jpg http://images.tinypic.pl/i/00957/8j9cxq155143.jpg --------------------------------------------- This is MIMIC-1 mapper (MMC3 predecessor) with modified (inverted) PRG-A16, added seventh bit to CHR register to control CHR-A16 and added IRQs. Mirroring is hardwired to V. Original MICIC-1 $8000 (mask: $E001): Bank select 7 bit 0 ---- ---- xxxx xRRR ||| +++- Specify which bank register to update on next write to Bank Data register 0: Select 2 KB CHR bank at PPU $0000-$07FF 1: Select 2 KB CHR bank at PPU $0800-$0FFF 2: Select 1 KB CHR bank at PPU $1000-$13FF 3: Select 1 KB CHR bank at PPU $1400-$17FF 4: Select 1 KB CHR bank at PPU $1800-$1BFF 5: Select 1 KB CHR bank at PPU $1C00-$1FFF 6: Select 8 KB PRG ROM bank at $8000-$9FFF 7: Select 8 KB PRG ROM bank at $A000-$BFFF ------------------------------------------------- $8001 (mask: $E001): Bank data 7 bit 0 ---- ---- xxdd DDDd || |||| ++-++++- New bank value, based on last value written to bank select register (mentioned above) Only five bits exist for the two 2 KiB CHR banks, only six bits exist for the four 1 KiB CHR banks, and only four bits exist for the two 8 KiB PRG banks. PRG-A16 from mapper is inverted, so it maps like: PRG memory: $8000 | $a000 | $c000 | $e000 ----------+----------+----------+---------- $8000.reg6|$8000.reg7| | xor | xor | 6 | 7 0b1000 |0b1000 | | CHR memory: $0000 | $0800 | $1000 | $1400 | $1800 | $1c00 ----------------------+---------------------+----------+----------+----------+---------- $8000.reg0 | $8000.reg1 |$8000.reg2|$8000.reg3|$8000.reg4|$8000.reg5 IRQ mechanism: There is 4 bit counter, which is decreased by one every 1024 edge of M2. When it reaches 0, IRQ is fired. IRQ can be acknowledged by writing to $e000 or when counter rolls from 0 to 15 (which will occur after 1024 edges of m2) $e000 (mask: $e003): writing any value holds counter in reset and acknowledges pending IRQ $e002 (mask: $e003): writing any value releases counter from reset $c000 (mask: $e001): writing sets counter value to d3..d0

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
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