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Thread: Vintage Chips - M259EB1 - anyone have any info?

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    Vintage Chips - M259EB1 - anyone have any info?

    I have just received a couple of SGS M259EB1 "16 rhythm generator" chips as part of a joblot of vintage chips. (which also included EIGHT AMI S10430 chips, untested).
    However, that's all I know about them. I can't find any pinout diagrams or datasheets for them.
    They were apparently used in old Italian organs (oo-err missus..)

    Does anyone have any info, (Other than the list of machines they were fitted to - I already know..)?

    Thanks.

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    Lifetime Member Enzo's Avatar
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    Can you find schematics for one or more of those machines on your list?

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    Education is what you're left with after you have forgotten what you have learned.

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    Quote Originally Posted by Enzo View Post
    Can you find schematics for one or more of those machines on your list?
    Sneaky. I like it.

    I'll do some digging.

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    Looking at other SGS chips of similar size (DIP40) they are things like "single chip organ synthesizer" or "M110 Monophonic Synthesizer and Keyboard Processor" so my guess that it is similar to those. You can get a datasheet for the M110, and perhaps from that be able to do some pin to pin testing. I would try to contact some of the vintage organ/synth forums, they would probably know.

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    Old Timer J M Fahey's Avatar
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    No, but just EBay them. *somebody* out there needs them and will pay.
    With that money, you buy whatever IC you are actually interested in, which has datasheets, and experiment at will.

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    Juan Manuel Fahey

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    Here is datasheets of the M258 and M259 rhythm generators.
    https://www.dropbox.com/s/s111w417vi...rator.pdf?dl=0

    The S10430 is the divider-keyer.

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