[Techtoolslist] Looking for Fluke 9010a U62 (82S123) PROM Image

[Tony Jones]

If it's socketed I can read it for you (DataIO 29b or BK 866).  I can
burn a replacement also, though I only have intersil/mmi variants in
the 32Wx8 and I'd have to charge you for the PROM as they are getting
scarce.   With this plus shipping you might want to go the
image+ottawa route. Drop me a line off list if you need help!

HTH

Tony

On Thu, Aug 3, 2017 at 2:42 PM, William Stillwell <ki4swy at gmail.com> wrote:
> just read a working one?
>
> https://forums.arcade-museum.com/archive/index.php/t-265230.html
>
>
>
> William Stillwell
>
> Board Member - Inspiration labs, Inc. a 501c3 organization
>
> Board Member - West Central Florida Group, Inc. a 501c3 organization
>
> Board Member & Co-Founder - Byte Amusement Group // Free Play Florida
> Arcade & Pinball Show a 501c3 organization
>
> Board Member - Clearwater Amateur Radio Society
>
> On Thu, Aug 3, 2017 at 4:49 PM, Grant Goodes <grant.goodes at gmail.com> wrote:
>
>>    Hi list-members,
>>    A friend has a Fluke 9010a that won't boot.  After finally tracking
>>    down a z80 pod, we used my functioning 9010a to do some debugging
>>    (using information in the Service Manual), and figured out that the ROM
>>    at 0-3FFF was colliding with the ROM at 4000-7FFF: When you try to read
>>    address 4000, you get the contents of address 0.  Schematic spelunking
>>    implicates the Memory Page Selector chip U62 which is a 82S123 PROM.
>>    We could just replace the PROM, but I've not been able to find the
>>    image-file for this one.  Does anyone have an image-file for U62, or
>>    even better a spare U62?  A local guy in Ottawa can burn this PROM for
>>    us, but then we'd need the image!
>>    We will of course do some more debugging: In particular, we need to
>>    trace the ROM chip-select signals back through to the z80 with the
>>    9010a in Read-mode/loop, but ran out of time in our late-night
>>    debugging session last night.
>>    Thanks for any help: Would be great to get my friend setup with a
>>    working 9010a!
>>    grant..
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