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Old 11 March 2012, 14:45   #1
droopy
 
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RTC on the a1200 MB ?

What would be needed to put an RTC like RF5C01A on the a1200 motherboard ? I guess an oscillator and some additional components. And would it work at all ?

I have a spare MB that I just woke up from a mem failure by soldering in some new chip ram circuits and it seems to work fine. But got curious on the space for the RTC next to the ram's and if it is not to much tinkering.....why not..try
 
Old 11 March 2012, 17:55   #2
Jope
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Check out the A1200 schematics. They have the optional clock circuit drawn into them.
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Old 23 July 2017, 13:14   #3
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I realize this is an old thread, but I am not able to find the answer... did anyone actually add the parts onto the A1200 motherboard for the RTC (as per the schematic) and get it working? It's only a couple of dollars in parts and 30 minutes with a soldering iron. I have tons of spare parts here to do it, all I would need to buy is the RTC chip. SMD is no problem for me so I can do the work, but I'm curious if anyone has done it and if it worked?
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Old 23 July 2017, 15:56   #4
RedskullDC
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Hi Fordav1,
Quote:
Originally Posted by fordav1 View Post
...I'm curious if anyone has done it and if it worked?
Yes, it does work.

Did it to a 1D4 A1200 many years ago, though I no longer have it.

I acquired it with an early GVP A1230 Turbo+ card installed, which doesn't have an RTC.

Putting the components on the motherboard seemed liked the best option at the time to leave the "clock" port free for a silver surfer board.

Cheers,
Red
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Old 23 July 2017, 16:15   #5
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excellent, thanks for the info. I'll give it a try.
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Old 24 July 2017, 03:48   #6
c4u2sky
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thanks. I will try it right after reading this article
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Old 05 August 2017, 17:55   #7
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Just a quick update: I've added the parts (minus RTC) and the battery charges as normal. Still waiting for the RF5C01A chips to arrive. I had a hell of a time sourcing them, they are seriously not easy to find now in the SOIC18 package. I ended up going with some random seller on aliexpress who didn't speak English very well.
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Old 28 October 2021, 15:32   #8
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Quote:
Originally Posted by fordav1 View Post
Just a quick update: I've added the parts (minus RTC) and the battery charges as normal. Still waiting for the RF5C01A chips to arrive. I had a hell of a time sourcing them, they are seriously not easy to find now in the SOIC18 package. I ended up going with some random seller on aliexpress who didn't speak English very well.
Sorry for reviving this old topic. Did you manage to get this to work? I'm thinking of doing the same.
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