Author Topic: Fram Duo Mod  (Read 3094 times)

Vimtoman

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Fram Duo Mod
« on: January 14, 2016, 08:29:05 PM »
This is a Fram mod rather than a Sram mod that WilyKat is doing.
The Fram is more expensive than the Sram version but....
Unlike Sram does not need a large storage cap to hold memory.
So no loss of data for years and years and years....

No battery in the Tennokoe Bank.

IC is a Cypress FM18W08.

It's a Fram with a similar pinout.




Formated Ram OK.
Have just tried Soldier blade and save is in the bank.



Just ordered some switches which are Hartman PT65503 16way hex.

This a rotary switch that will have pullup resistors giving an extra 16 banks of data.

Will wire up the switch when it arrives and post to all a wiring diagram.

This will of course work with WilyKats great piece of work on the next thread.
I will probably upgrade mine to his switching circiuit when he's finished it.
« Last Edit: January 18, 2016, 01:59:21 AM by Vimtoman »

Vimtoman

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Re: Fram Duo Mod
« Reply #1 on: January 15, 2016, 01:27:27 AM »
Here is some info of my installation.
Switch has been added and all works.

1. Remove original IC and add wire to Pad 21



2. Flatten pins on new IC for wiring.




Note I have  used the VCC/+5v input of the original Sram cap not the output which the Sram requires.


Rear pinout of switch.



Hotglued switch into hole in cover.

Note pullup resistors and used a cutdown 8pin IC socket for ease of removal if switch needs changing.


Finished view of Ram Bank selector.

« Last Edit: January 15, 2016, 01:31:51 AM by Vimtoman »

thesteve

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Re: Fram Duo Mod
« Reply #2 on: January 15, 2016, 09:05:02 AM »
great mod, this should be sticky'd


wilykat

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Re: Fram Duo Mod
« Reply #3 on: January 16, 2016, 09:18:17 AM »
And my original SRAM hack isn't sticky'd? :p

*goes off to cry quietly with a bottle of Everclear*

blueraven

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Re: Fram Duo Mod
« Reply #4 on: January 16, 2016, 09:46:29 AM »
Truly Epic Thread! Def sticky this.

Thanks Vimto for all of your hard work on this,

And my original SRAM hack isn't sticky'd? :p

*goes off to cry quietly with a bottle of Everclear*

Thanks again for your work on the SRAM hack :D
[Thu 10:04] <Tatsujin> hasd a pasrtty asnd a after pasrty ASDFTERTHE PARTY
[Fri 22:47] <Tatsujin> CLOSE FIGHTING STREET; CLOSE FORU; CLOSE INTERNETZ; CLOSE WORLD; CLOSE UNIVERSUM
--
Arkhan [05:15pm]: ill brbl im going to go make another free game noone plays lolol

thesteve

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Re: Fram Duo Mod
« Reply #5 on: January 16, 2016, 01:30:13 PM »
the BRAM thread from wilykat
somewhat a precursor to this thread and also expands the backup ram to multiple pages
the differences are the BRAM mod keeps the battery/supercap backup type whereas the FRAM eliminates the need for power to keep the saves
http://www.pcenginefx.com/forums/index.php?topic=20358.0;topicseen

Vimtoman

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Re: Fram Duo Mod
« Reply #6 on: January 16, 2016, 07:48:38 PM »
You can use this dip to soic adaptor for all Dip versions. e.g. Tennokoe 2

Heres a  28pin soic to 28pin Dip 300mm.

US
http://www.kr4.us/soic-28-to-dip-28-smt-adapter-1-27-mm-pitch-300-mil-body.html
UK
http://cpc.farnell.com/1/1/202830-proto-advantage-pa0011-adaptor-soic-28-dip-28-1-27-300mm.html

Just browse for a 
28pin soic to 28pin Dip 300mm adaptor

« Last Edit: January 18, 2016, 01:58:32 AM by Vimtoman »

wilykat

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Re: Fram Duo Mod
« Reply #7 on: January 17, 2016, 12:33:00 AM »
There are 24 pin DIP to SOIC adapter that is 300mill wide for 2k sram. Not as common evidently as the wider 600mill version.

Necromancer

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Re: Fram Duo Mod
« Reply #8 on: January 18, 2016, 01:27:09 AM »
And my original SRAM hack isn't sticky'd? :p

*goes off to cry quietly with a bottle of Everclear*

Steve asked me to sticky this thread, but nobody asked for the other one to be stickied.  It is now.
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Bernie

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Re: Fram Duo Mod
« Reply #9 on: January 18, 2016, 01:49:00 AM »
Love this shit!


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mickcris

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Re: Fram Duo Mod
« Reply #10 on: January 18, 2016, 09:53:03 AM »
And my original SRAM hack isn't sticky'd? :p

*goes off to cry quietly with a bottle of Everclear*

Steve asked me to sticky this thread, but nobody asked for the other one to be stickied.  It is now.

Wondering if there might be a way to combine some of the sticky threads since almost the whole 1st page is now sitckies.  Like maybe a capacitor replacement sticky and then place links to all the capacitor replacement threads.  Just a thought as im thinking now some new posts are going to go on the 2nd page and might get missed.

thesteve

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Re: Fram Duo Mod
« Reply #11 on: January 18, 2016, 11:31:02 AM »
i second this as the 2 save ram mods should be lumped as options of the same basic mod

Vimtoman

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Re: Fram Duo Mod
« Reply #12 on: January 18, 2016, 07:58:48 PM »
Maybe just REPAIR and MOD's

wilykat

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Re: Fram Duo Mod
« Reply #13 on: January 18, 2016, 11:45:20 PM »
Or maybe a sub-forum just for the stickies with the warning "Check these first or be banned!"

incrediblehark

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Re: Fram Duo Mod
« Reply #14 on: January 18, 2016, 11:48:15 PM »
Too many stickies! but seriously though this is very impressive work and I like the idea of never loosing a save. Plus you can play Wizardry with a lot less hassle now!