GA-M57SLI-S4 rev 2.0 dual flash chip modification recipe

[Peter Stuge]

The board can be modified in two ways. One is simpler and less
reliable, the other is more complex but much more robust.

Materials needed:
1x SO-8 SPI flash chip, ideally 200mil but 150mil can work too
   Spansion S25FL016A is easy to get. Macronix has the 32Mbit MX25L3205.
2x 0402 100k chip resistors
1x SPTD (Single Pole Dual Throw) switch and three wires

For the better modification, you also need:
2x 0402 4k7 chip resistors (1k is OK too, 10k does not work!)
2x 0603 100k chip resistors
2x SOT-23 BC847C transistors

See http://stuge.se/m57sli/m57sli_soic_detail_labels.jpg for reference.

Common steps always needed:
1. U9: Populate flash chip
2. R509: Remove
3. R89,R130: Populate 0402 100k resistors

Simple:
NOTE: Keep wires to the switch short! Only a few centimeters/one inch.
4. Solder center contact on switch to Q4-3 or Q5-3. Either is OK.
5. Solder one side contact on switch to Q4-1.
6. Solder other side contact on switch to Q5-1.
7. DONE!

Better:
NOTE: Switch wires can be rather long. Several meters has been tested.
4. R90,R91: Populate 0402 4k7 resistors
5. R86,R389: Populate 0603 100k resistors
6. Q4,Q5: Populate SOT-23 BC847C transistors
7. Solder center contact on switch to VCC, e.g. at BC54-2.
8. Solder one side contact on switch to R86-2.
9. Solder other side contact on switch to R389-2.
10. DONE!

I am happy to sell boards pre-modified with the better modification.
Unfortunately I cannot offer these boards to consumers in all EU
member states because of EU environmental regulations, but many are
OK.

//Peter

GA-M57SLI-S4 rev 2.0 dual flash chip modification recipe

[Peter Stuge]

When testing a modified board a while back I discovered that I had
forgoten one important ingredient and step in this recipe. I've just
updated http://stuge.se/m57sli/ and added a photo of the finished mod
while I was at it.

On Sun, Jun 22, 2008 at 07:24:45AM +0200, Peter Stuge wrote:
> For the better modification, you also need:
> 2x 0402 4k7 chip resistors (1k is OK too, 10k does not work!)
> 2x 0603 100k chip resistors
> 2x SOT-23 BC847C transistors

Add:

1cm AWG 30 wire (but get some extra so there is some to work with)
> Better:
> NOTE: Switch wires can be rather long. Several meters has been tested.
> 4. R90,R91: Populate 0402 4k7 resistors

Insert:

5. Q2,Q43: Solder 5mm or so of AWG 30 wire between Q2-2 and Q2-3.
           Solder another wire between Q43-2 and Q43-3.
> I am happy to sell boards pre-modified with the better modification.
> Unfortunately I cannot offer these boards to consumers in all EU
> member states because of EU environmental regulations, but many are
> OK.

I've made a table showing which states I can sell to on the web page
too.

//Peter

GA-M57SLI-S4 rev 2.0 dual flash chip modificationrecipe

[Robert Vogel]

Hi //Peter

Why the restrictions on who you can sell to ?

How about US consumers ? You didn't mention them on your page ?

Bob

----- Original Message ----- 
From: "Peter Stuge" 
To: 
Sent: Thursday, July 17, 2008 1:21 PM
Subject: Re: [coreboot] GA-M57SLI-S4 rev 2.0 dual flash chip 
modificationrecipe
> When testing a modified board a while back I discovered that I had
> forgoten one important ingredient and step in this recipe. I've just
> updated http://stuge.se/m57sli/ and added a photo of the finished mod
> while I was at it.
>
> On Sun, Jun 22, 2008 at 07:24:45AM +0200, Peter Stuge wrote:
> > For the better modification, you also need:
> > 2x 0402 4k7 chip resistors (1k is OK too, 10k does not work!)
> > 2x 0603 100k chip resistors
> > 2x SOT-23 BC847C transistors
>
> Add:
>
> 1cm AWG 30 wire (but get some extra so there is some to work with)
> > Better:
> > NOTE: Switch wires can be rather long. Several meters has been tested.
> > 4. R90,R91: Populate 0402 4k7 resistors
>
> Insert:
> Q2,Q43: Solder 5mm or so of AWG 30 wire between Q2-2 and Q2-3.
>        Solder another wire between Q43-2 and Q43-3.
> > I am happy to sell boards pre-modified with the better modification.
> > Unfortunately I cannot offer these boards to consumers in all EU
> > member states because of EU environmental regulations, but many are
> > OK.
>
> I've made a table showing which states I can sell to on the web page
> too.
>
> //Peter