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(Topic ID: 312729)

Tri Zone - Missing roms?

By Phantasize

2 years ago



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  • 6 posts
  • 4 Pinsiders participating
  • Latest reply 2 years ago by PINTEC
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    #6 2 years ago
     
    ^^^

    PINTEC

    Pinside member

    US Chicago, IL

    6y 51,550 513

    OP
    Quoted from Phantasize:

    So as i understand it, the game could very well have run with the pictured chip combination, but i should burn a new game rom for The IC14 slot?

    This is the correct set up for Tri Zone mpu with Bipolar Roms the pads should be filled at IC 26 and IC 14 (install a socket at 14) to allow a secure thru hole connection

    Rom at IC 14 Use:

    Remove J4 and connect J3

    Remove Prom's at IC 22 and IC 21

    Fill in solder pads at IC 26

    Install socket at IC 14

    Suggest replacing socket 17 and 20

    Flipper rom set: if they cannot be tested replace roms 17 and 20 along with IC 14

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