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(Topic ID: 274227)

Strange flash sequence on MPU 200

By oldschoolbob

3 years ago



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  • 4 posts
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  • Latest reply 3 years ago by barakandl
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    #4 3 years ago
     
    AMS

    barakandl

    nvram.weebly.com

    12y 132K 10,420

    OP
    Quoted from oldschoolbob:

    Thanks Quench. I thought it may have something to do with having two chips on that board.
    I've been working on Bally's and Stern 100's (that only have one 5101) and this pause seemed different.
    Thanks
    Bob

    The pause moves on MPU200 games to the 5101 from earlier mpu100/bally where it the 6810. The POST sequence for the pin vids are different too.

    No pause for the 6810 in MPU200 and not sure why, but presumably its because of the much faster clock speed. They must be artificially slowing down the POST sequence some how or else it would speed through it with the considerably faster clock speed MPU200 compared to bally/MPU100. If you run the MPU100 software at the MPU200 clock speed the POST flash sequence is very rapid.

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