Author Topic: FXPAK PRO Real time Clock issue  (Read 1160 times)

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Offline Trunks_o0

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FXPAK PRO Real time Clock issue
« on: June 14, 2021, 04:40 PM »
I received my FXPAK PRO about a week ago and the first thing I did was set the time.

Around the second or third day I noticed the time was off maybe 5 min or so If I recall correctly.
So I run the followings tests (all instances below the cart remained in my SNES):


- I did a test last night and set the time, after checking it about 12 hours later, the time had advanced 40 secs or so into the future of what the time should be
- I set the the time again and checked it maybe 6 hours later and it had advanced 22 secs into the future of what the time should be

This is very strange, what could be causing this ? is my FXPAK PRO defective ?



Offline Relikk

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Re: FXPAK PRO Real time Clock issue
« Reply #1 on: June 14, 2021, 07:09 PM »
It's a known issue. The clock on the SD2SNES/FXPak isn't very accurate.

Offline Trunks_o0

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Re: FXPAK PRO Real time Clock issue
« Reply #2 on: June 15, 2021, 02:41 AM »
Does it very from cart to cart or do you happen to know if it's a bug in the software affecting everyone?

I'm asking because I would have expected to see a lot of posts around the issue but there does not seem to be much.
I also asked stone age gamer and they haven't heard of this issue (thus the post).

Offline nuu

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Re: FXPAK PRO Real time Clock issue
« Reply #3 on: June 15, 2021, 10:16 AM »
I have an older SD2SNES and it has also always been quite off. Maybe it's just a cheap RTC chip, or the crystal used isn't very suitable for an accurate RTC?

It's not a big deal, you just have to adjust it once every 6 months or so to prevent it from drifting off too much.

Offline Trunks_o0

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Re: FXPAK PRO Real time Clock issue
« Reply #4 on: June 15, 2021, 10:23 AM »
Thanks for the reply. Can I ask how off is it for you ?
Just to compare if it off by the expected amount (is mine worse off than others), what I have seems to be adding a 1 min and 10 seconds a day. so 180 min or so  into the future for 6 months roughly speaking.
« Last Edit: June 15, 2021, 04:11 PM by Trunks_o0 »

Offline nuu

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Re: FXPAK PRO Real time Clock issue
« Reply #5 on: June 16, 2021, 01:16 PM »
Yes that sounds about right.