Apple IIe RAM issue solved!

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jcmontero's picture
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Joined: Jun 14 2017
Posts: 19

Hi,

I just got the new MT RAM chips for my Apple IIe, I installed them and everything's fine.

The much desired positive self-test response has arrived:

https://www.dropbox.com/s/938gb0nvwpg1fk9/kernel_OK.jpg?dl=0

My new RAM array:

https://www.dropbox.com/s/oea7kqqufo5ym0n/New_RAM_CHIPS.jpg?dl=0

This data sheet for the Apple IIe says the right chips should be TMS4164-15, but I hope the MT4264-12 I installed would do the job as well as those.

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Juan Carlos

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macnoyd's picture
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Joined: Oct 15 2012
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Re: Apple IIe RAM issue solved!

Way to go. Congrats!

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macnoyd

jcmontero's picture
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Joined: Jun 14 2017
Posts: 19
Re: Apple IIe RAM issue solved!

Thank you! Smile

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Juan Carlos

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Joined: May 23 2013
Posts: 92
Re: Apple IIe RAM issue solved!

Congratulations on getting it going again. USA flag on them?? How ancient are those? Smile

jcmontero's picture
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Joined: Jun 14 2017
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Re: Apple IIe RAM issue solved!

Here2Learn,

thank you!

The date codes are between 8722 and 8732, so they're from May/August 1987.

They're so young, only 30 years old! Smile

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Juan Carlos

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Joined: May 23 2013
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Re: Apple IIe RAM issue solved!

Thank you for the info.

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Joined: May 27 2009
Posts: 898
Re: Apple IIe RAM issue solved!

By the time those chips were manufactured I think Micron had solved the reliability issues.

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jcmontero's picture
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Joined: Jun 14 2017
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Re: Apple IIe RAM issue solved!

Keith,

that's good news. Smile

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Juan Carlos