EverDrive Forum

General => Off Topic => EverDrive MD => Topic started by: Greenhawk84 on September 20, 2016, 09:17 PM

Title: Rewrite 100,000 times?
Post by: Greenhawk84 on September 20, 2016, 09:17 PM
So, interesting to see 100,000 rewrites as limiting the life of the cart.  I just got an Everdrive-MD v3 and overlooked this detail.  What does this mean?  Every time I load a new game into memory?
Title: Re: Rewrite 100,000 times?
Post by: phoenixdownita on September 21, 2016, 01:45 AM
Everytime you load a new game it counts as 1.
It's basically the lifetime of the flash used to store the data, more advanced carts from krikzz use RAM instead of flash so they do not have the issue.


If you were to load 10 games every day it would take 27 years to hit it:
10 games * 365 days = 3650 * 27 years ~= 100K

I understand sometime you may go thru 50 games in a day but there will be days where you won't even turn it on ..... so even the avg of 10 times a day is pretty generous imho.

The 100K write cycle is a theoretical limit, unsure how close you can really get to it.
Title: Re: Rewrite 100,000 times?
Post by: TDIRunner on September 21, 2016, 05:22 AM
If you flash a cart 100k times, it wouldn't be unlike driving a car 500k miles.  It's very unlikely you will have it long enough to actually do that, and even if you do, there gets to be a certain point where it isn't unreasonable to have to purchase another unit due to age/use (just like a car :) )
Title: Re: Rewrite 100,000 times?
Post by: ErivandoXP on June 05, 2017, 03:44 PM
Hypothetically speaking ...

After that limit and the end of the flash life, could I replace it and fix it easily?

How much does this replacement flash cost?
Title: Re: Rewrite 100,000 times?
Post by: phoenixdownita on June 07, 2017, 08:13 AM
Hypothetically speaking ...

After that limit and the end of the flash life, could I replace it and fix it easily?

How much does this replacement flash cost?
Yes, you just need to unsolder the existing flash chip and solder a brand new one that is pin/feature compatible. The chips right now aren't terribly expensive, the EDMD-v3 seems to be using an ST chip (for example the SuperED used an ST M29W640FT that on eBay sells for around 5USD + shipping
http://www.ebay.com/itm/1PCS-M29W640FT70N6E-IC-FLASH-64MBIT-70NS-48TSOP-29W640-M29W640-/192129137946?hash=item2cbbc9fd1a
 I don't think the EDMD-v3 used something much different or expensive).
So told you need SMD soldering gears/skills and hope that in 27Y or so there's still stock of the chips (or compatible).

Given the MegaED x3 is only 50US$ if you really are scared of running out of flash-cycles on your EDMD-v3 just buy one as a "back-up" as that is all PSRAM based. (note: RAM breaks down too, I recently had a DRAM chip on a console from 1993 break and I guarantee you I put very little use in it in the last 5Y/6Y like 2H per year if that ... so you never know really). Even better buy an x5 or x7 and sell your EDMD-v3 if you are that concerned.

Title: Re: Rewrite 100,000 times?
Post by: keeper7 on June 07, 2017, 10:50 AM
I wonder if Game Genie feature could shorten its lifespan. ???
Title: Re: Rewrite 100,000 times?
Post by: FeverDrive on June 08, 2017, 05:48 AM
I wonder if Game Genie feature could shorten its lifespan. ???
I don't think so.
Title: Re: Rewrite 100,000 times?
Post by: keeper7 on June 11, 2017, 09:47 AM
I wonder if Game Genie feature could shorten its lifespan. ???
I don't think so.

Well, technically GG rewrites some blocks.
Title: Re: Rewrite 100,000 times?
Post by: FeverDrive on June 11, 2017, 09:11 PM
I wonder if Game Genie feature could shorten its lifespan. ???
I don't think so.

Well, technically GG rewrites some blocks.
But I guess it does that on-the-fly before writing the game to the flash chip.
Title: Re: Rewrite 100,000 times?
Post by: SmokeMonster on June 11, 2017, 09:38 PM
Yes, you just need to unsolder the existing flash chip and solder a brand new one that is pin/feature compatible.
Exactly this. It's a simple repair for anyone with a reflow station, and the chips are even cheaper (2 for $5/shipped) on Aliexpress (https://www.aliexpress.com/w/wholesale-M29W640FT70N6E.html?site=glo&SearchText=M29W640FT70N6E&g=y&SortType=price_asc). If units start to die in the future due to excessive rewrites, they can be very easily brought back into service by anyone with basic repair skills.