Author Topic: Duo memory for saved data. (Read 1289 times)

NeoFreak · « **on:** July 19, 2005, 04:37:47 PM »

I keep reading about how the Duo has some type of internal memory battery, to save game data to. Does the Duo use a CR2032 battery like the Saturn, or something similar? I couldnt really find any specifics.

lord_cack · « **Reply #1 on:** July 19, 2005, 05:03:04 PM »

Quote from: "NeoFreak"

I keep reading about how the Duo has some type of internal memory battery, to save game data to. Does the Duo use a CR2032 battery like the Saturn, or something similar? I couldnt really find any specifics.

There was recently a discussion about this...but I can't recall weather it was on these boards or the ones over at magicengine.com

nodtveidt · « **Reply #2 on:** July 20, 2005, 02:18:53 AM »

The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

zborgerd · « **Reply #3 on:** July 20, 2005, 06:36:18 AM »

A CR2032 or similar cell could probably be used as a replacement for the cap. It's just a matter of locating it and having a reasonable soldering skill. It's probably easier to do on the TG16 CD systems.

twor2005 · « **Reply #4 on:** July 20, 2005, 05:19:27 PM »

Quote from: "nodtveidt"

The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

Like a flux capacitator?

lord_cack · « **Reply #5 on:** July 20, 2005, 06:20:35 PM »

Quote from: "twor2005"

Quote from: "nodtveidt"
The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

Like a flux capacitator?

Thats funny...I am watching Back to the Future....wierd...

DragonmasterDan · « **Reply #6 on:** July 20, 2005, 07:38:41 PM »

Quote from: "nodtveidt"

The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

It also ruins your saves if you don't power the machine up for a few weeks

twor2005 · « **Reply #7 on:** July 20, 2005, 11:33:54 PM »

Quote from: "DragonmasterDan"

Quote from: "nodtveidt"
The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

It also ruins your saves if you don't power the machine up for a few weeks

Can you verify this? It seemed like I powered up my TGCD after a few years and it still had my saves, but I could be wrong about that.

zborgerd · « **Reply #8 on:** July 21, 2005, 01:48:40 AM »

Quote from: "twor2005"

Quote from: "DragonmasterDan"
Quote from: "nodtveidt"
The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

It also ruins your saves if you don't power the machine up for a few weeks

Can you verify this? It seemed like I powered up my TGCD after a few years and it still had my saves, but I could be wrong about that.

Faraday can verify this.

http://en.wikipedia.org/wiki/Farad
http://en.wikipedia.org/wiki/Capacitor

NeoFreak · « **Reply #9 on:** July 21, 2005, 01:54:13 AM »

interesting, so it seems to be like a rechargable battery or something.

nodtveidt · « **Reply #10 on:** July 21, 2005, 05:07:39 AM »

A capacitor is sort of like a rechargeable battery...it's designed to hold an electrical charge for a period of time. Granted one could theoretically hold a charge for several years and then the same kind could lose the charge after only a few weeks...there's a lot of factors involved. The easiest way to discharge a capacitor is to short its leads.

DragonmasterDan · « **Reply #11 on:** July 21, 2005, 09:32:40 AM »

Quote from: "twor2005"

Quote from: "DragonmasterDan"
Quote from: "nodtveidt"
The Duo uses a capacitor. Cheap and somewhat unstable but never needs replacing.

It also ruins your saves if you don't power the machine up for a few weeks

Can you verify this? It seemed like I powered up my TGCD after a few years and it still had my saves, but I could be wrong about that.

It's happened to me many many many times before.

With that said I own a Sega CD 1 (the one with the motor) and it has a capacitator for saving, it's never once lost data (though if it ever did I have a memory card unlike my Duo). Maybe the TGCD has a better capacitator than the Duo that lasts a lot longer. I've lost Duo saves many times before, including saves of important RPGs!

Keranu · « **Reply #12 on:** July 21, 2005, 10:10:21 AM »

Haha, congrats to twor for the Back to the Future reference! 80's movies rule.

esteban · « **Reply #13 on:** July 22, 2005, 01:28:41 PM »

Quote from: "twor2005"

Can you verify this? It seemed like I powered up my TGCD after a few years and it still had my saves, but I could be wrong about that.

Word up, my TG-CD has kept game saves for years. during 1993-2003, I only used my TG-CD a few times (on holidays, every 1-3 years). Game data was intact.

I really can't recall how the DUO handled things...

zborgerd · « **Reply #14 on:** July 22, 2005, 05:04:20 PM »

Quote from: "stevek666"

Quote from: "twor2005"

Can you verify this? It seemed like I powered up my TGCD after a few years and it still had my saves, but I could be wrong about that.
Word up, my TG-CD has kept game saves for years. during 1993-2003, I only used my TG-CD a few times (on holidays, every 1-3 years). Game data was intact.

I really can't recall how the DUO handled things...

Well, using the system at all will charge the capacitor, even if you're just playing hucards. Keeping the base powered on the docking station might suffice as well. I've never really looked into it.

Capacitors cannot hold a charge forever though, but it doesn't take much to preserve the data.