Who manufactured those 74XXs?

Discuss hardware-related topics, such as development cartridges, CopyNES, PowerPak, EPROMs, or whatever.

Moderators: B00daW, Moderators

Post Reply
krzysiobal
Posts: 790
Joined: Sun Jun 12, 2011 12:06 pm
Location: Poland

Who manufactured those 74XXs?

Post by krzysiobal » Thu Oct 15, 2020 1:09 pm

I've found three cartridges that seem to be made by the same company as the board layout shares common features:
* white silkscreen for where components have to be placed with package overlays
* discrete components have names written in lowercase
* each PCB has its unique name
* Almost every 74xx chip seem to be made by the same manufacfturer signed by "TW" logo, without any date - anyone know this company?
chips.png
Because the mark is poorly printed, not engraved, I thought they might refubrished integrated circuits from various companies, but the package also seems to be the same (beveled |) and dot at first pin)

------------------------------------------------------------------

T4IN1
Unique multicart, combining UNROM and ANROM games - more info: wiki

Image Image

------------------------------------------------------------------

T76IN1
Seems to be yet another clone of popularn 76 in 1 multicart, as the chip and their location is identical to one of those (although the board is redesigned from scratch)
Source: forum
comp.jpg
bottom.jpg
------------------------------------------------------------------

S6IN1
MMC3 and UNROM multicart.
Source: forum
comp.jpg
bottom.jpg

User avatar
aquasnake
Posts: 134
Joined: Fri Sep 13, 2019 11:22 pm

Re: Who manufactured those 74XXs?

Post by aquasnake » Thu Oct 15, 2020 6:38 pm

from "华强北"-Shenzhen-China

a base of refurbishing electronic components

:lol:

Post Reply