Cart DB #304: Smart Computer Book

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	62256P
IC2	62256P
IC3	DIL40
CART1	FAMICOM_CART
JP1	OPEN
JP2	1-2,1-4

Name

Value

IC1

62256P

IC2

62256P

IC3

DIL40

CART1

FAMICOM_CART

JP1

OPEN

JP2

1-2,1-4

Dumping educational cartridge RB-925 34 in 1 (word/excel and other stuff) I found out by accident this weird educational cartridge: [url=https://obrazki.elektroda.pl/2550916100_1546530182.png][img]https://obrazki.elektroda.pl/2550916100_1546530182_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7347444300_1546530250.png][img]https://obrazki.elektroda.pl/7347444300_1546530250_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/8496303500_1546530251.png][img]https://obrazki.elektroda.pl/8496303500_1546530251_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/1617095400_1546531929.jpg][img]https://obrazki.elektroda.pl/1617095400_1546531929_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/5831923100_1546531929.jpg][img]https://obrazki.elektroda.pl/5831923100_1546531929_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/9842161600_1546531928.jpg][img]https://obrazki.elektroda.pl/9842161600_1546531928_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7392296200_1546531929.jpg][img]https://obrazki.elektroda.pl/7392296200_1546531929_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/3054357200_1546531929.jpg][img]https://obrazki.elektroda.pl/3054357200_1546531929_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7823290800_1546531930.jpg][img]https://obrazki.elektroda.pl/7823290800_1546531930_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/4906740600_1546531931.jpg][img]https://obrazki.elektroda.pl/4906740600_1546531931_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/5728168300_1546531930.jpg][img]https://obrazki.elektroda.pl/5728168300_1546531930_thumb.jpg[/img][/url] I am trying to dump it but without succes, so maybe any advices will be welcome. Game writes to $CDEF (0 on powerup and then different values when choosing various items from the menu), but when I am doing that write on my kazzo, reads from $8000-$ffff always return the same set of data. My Kazzo controls M2 line resulting in same CPU cycles as on NES (though the lenghth of low and high part of M2 is around 3us). Anyway, M2 never stays in same state for more than 6 us. So either: * this cartridge needs almost exact timings like on 6502 (which is strange cause even MMC5 allows 10us of idle time on M2 and the R-C-D circuit on many multicarts isn't that sensitive too), * there is some other kind of protection (I saw other multicarts needing dumping data in packets of at most $80 bytes), * this register is to fake reverse-engineer proces. Hardware consists of: * 32 pin 62512 64 KB SRAM for CHR-RAM, but all upper lines are tied to VCC making efectively 8kB 6265 out of it, * 24 pin 6116 2KB SRAM for PRG-RAM * blob which is mapper + PRG-ROM * one jumper at bottom, which connects SRAM's pin 21 to either R/!W or CPU-A11 (allowing to use 24-pin 6116 or 32-pin 6264). * one (open) jumper at top connecting unknown blob line to VCC (voltage on it is around 5V), but when connecting it to GND, CHR-RAM becomes open bus and PRG reading from $4000-$5FFF returns data Blob wires CPU D0-D7/ A0-A14, !ROMSEL, R/!W, M2, PPU-A10, PPU-A11, CIRAM-A10 and PRG-RAM-!CS

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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