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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 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
Mapper#
Original mapper#
PCB marks
Tags
Chips
4 in 1
Typemulti
Mapper263
Original mapper2+7
PCB marksT4IN1
Tags:#squaresilk
Uploaded:2016-12-24 11:26:33

Elements:
NameValue
IC16264A
IC27432
IC37420
IC474157
IC527F080
IC674161
IC774161
C1CAPACITOR
CART1FAMICOM_CART
D1DIODE
R11k

Chip signature:
6264A+7432+7420+74157+27F080+74161+74161

PCB top:

PCB bottom:

Shell top:
No photo

Shell bottom:
No photo
Screenshoots:

Extra info:
PRG: 512 KiB ROM
CHR: 8 kB RAM
Bus conflicts: no

gG | GAME
---+----------------
00 | Trog
10 | Duck Tales I
01 | Marble Madness
11 | Captain Skyhawk

Registers:

$6000-$7FFF: UNROM/ANROM banking type & game number
7  bit  0
---- ----
TgGP
||||
|||+------------ protection:    0 - off, 1 - contents of this register cannot be changed until console reset
|++------------- selects one of four 128 kB games; g is lower address line: PRG-A18 = G, PRG-A17=g 
+--------------- banking style: 0 - UNROM: $8000-$bfff 16 kB switchable CBA bank, $c000-$ffff fixed to last bank, PPU vertical mirroring
                                1 - ANROM: $8000-$ffff 32 kB switchable BA bank, PPU single screen mirroring


$8000-$FFFF: bank select (when in UNROM mode)
7  bit  0
---- ----
      CBA
      |||
      +++------------ UNROM bank (when in UNROM MODE)

$8000-$FFFF: bank select (when in ANROM mode)
7  bit  0
---- ----
   M   BA
   |   ||
   |   ++------------ ANROM bank (when in ANROM MODE)
   +----------------- one screen mirroring
   

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