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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
20 in 1 + 22 in 1
Typemulti
Mapper226
Original mapper
PCB marks5-35-C ET-79
Tags:
Uploaded:2020-06-25 07:57:00

Elements:
NameValue
IC127F080
IC26264
IC374373
IC47402
IC5- (7402)(7402)
IC67402
IC77402
C1-
C2-
CART1FAMICOM_CART

Chip signature:
27F080+6264+74373+7402+- (7402)(7402)+7402+7402

PCB top:

PCB bottom:

Shell top:
No photo

Shell bottom:
No photo
Screenshoots:

Extra info:
7402 freaks
Do you remember from your high school's logic algebra that every logic function can be build using only NAND (or NOR) gates? Looks like creator of this multicart did not miss that lesson!
And the unpopulated middle 7402 which inverts PRG-A19 but it's not wired to anything at all.

Optimization:
* Two of these 7402s could be replaced with single 74153
* If they get rid of bus conflicts (either by plkacing 256byte LUT in ROM or changing switchinf from data to address bus) and replaced 74373 with 74273 and added diode+resistor OR to enable it, another 7404 could be removed.

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