Logic Analyser Died

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Logic Analyser Died

Post by terriblefire » Fri May 10, 2019 7:48 am

So my beloved logic analyser with the network card died yesterday.

Looks like the DS1387 chips battery has failed.
ECDA62EF-D3F8-4DA1-9EB0-FF7D56A9410A.jpeg
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Re: Logic Analyser Died

Post by stephen_usher » Fri May 10, 2019 9:31 am

That's annoying. How easy are those particular DS units to find? Some of the older ones are still available but the newer ones discontinued (a problem for those trying to keep Sun Ultra workstations running, but older SPARCstations are just fine as the 42T02 is still in manufacture).

Given how often these units run out of battery I'd put a socket in it. (But generally I always do if I'm desoldering a chip.)
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.

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Re: Logic Analyser Died

Post by terriblefire » Fri May 10, 2019 12:18 pm

I’m not a fan of sockets. They’re v unreliable but in this case it’s warranted. Usually I just solder a new one in.

I’m planning to rework the DS1387 and install a coin battery then reflash with an arduino nano
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alenppc
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Re: Logic Analyser Died

Post by alenppc » Fri May 10, 2019 3:36 pm

Those Dallas battery packs are horrible, they were used in the old cheap PC motherboards also. I am surprised they cheaped out on something like that. Your logic analyzer is running on 68030? Amazing.

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Re: Logic Analyser Died

Post by terriblefire » Fri May 10, 2019 4:41 pm

It’s a 68EC020RP25...

Yeah I’d like a more robust solution long term
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Re: Logic Analyser Died

Post by terriblefire » Fri May 10, 2019 7:52 pm

A bit of tidy drilling if I do say so myself
0BAC30B3-FBF8-4CB7-BC6B-4D2F1D83B98C.jpeg
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Oddly the voltage is still about 3.0V but the current date/time was lost
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Re: Logic Analyser Died

Post by terriblefire » Sun May 12, 2019 8:33 am

And i managed to kill the arduino that i was using to reprogram the chip.
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Re: Logic Analyser Died

Post by stephen_usher » Sun May 12, 2019 11:00 am

OK, so what's the third thing to go wrong?
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.

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Re: Logic Analyser Died

Post by kludge » Sun May 12, 2019 1:51 pm

stephen_usher wrote:
Sun May 12, 2019 11:00 am
OK, so what's the third thing to go wrong?
A terrible fire, of course.
A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

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Re: Logic Analyser Died

Post by arf » Sun May 12, 2019 1:56 pm

kludge wrote:
Sun May 12, 2019 1:51 pm
stephen_usher wrote:
Sun May 12, 2019 11:00 am
OK, so what's the third thing to go wrong?
A terrible fire, of course.
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