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Amiga 1000 Akron A-Time Real Time Clock
Amiga 1000 Akron A-Time Real Time Clock
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Description: This is a parallel port battery backed up real time clock for the Amiga 1000. I received it with a machine I bought but the disk containing the "Read-RTC" program is long gone. Does anyone know where to get the program for this?
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Posted by: Jeff at December 17, 2007, 03:05:17 AM

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Comments (7)

November 26, 2008, 10:27:13 AM
Looking at pictures of all these old fangled electronic peripheral dealies and seeing how many of them are really really simple, it makes me wonder why more people aren't just making their own, or why people weren't making their own stuff back then. This item looks like 2 chips, a battery, some resistors and that three pronged thing I forget what it's called and viola, a clock for a computer. What's our whole deal, anyway?
December 26, 2007, 06:38:34 PM
It seems that it is simply using the RTC58321 chip as an interface chip. Judging from the datasheet it looks quite straight forward. I guess that it would read the clock during the startup-sequence, since the realtime clock in the amiga 1000 is stable enough. It propably also has a tool to set the realtime clock.

The datasheet can be found at:
RTC58321 datasheet link

Happy coding  :-)
December 18, 2007, 06:24:34 AM
It's taking a soldering iron to the board that makes me nervous! Mind you, it's probably just as dangerous building custom hardware for the parallel port and risking damaging the port...

December 18, 2007, 04:59:30 AM
You can also solder a couple of wires to the motherboard and locate the battery safely away on the chassis in a sealed plastic bag.

I agree this does look easy to build, but it's useless though without the software.
December 17, 2007, 03:50:37 PM
Would be great to get the software for this since the circuit looks pretty easy to build. I would love one of these for my A4000, since I'm too scared to solder a battery on to the motherboard :-)

December 17, 2007, 04:30:34 AM
Done! I'll watch for them.

December 17, 2007, 04:09:12 AM
Jeff, The Big Book of Amiga Hardware lacks information and photos for this hardware!

 Give Mario a pic and the info.

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