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The purpose of this site is to document the progress of sd2snes development and provide updates after release. It also serves as a definitive source of information to prevent excessive spreading of rumors. 
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The purpose of this site is to document the progress of sd2snes development and provide updates after release. It also serves as a definitive source of information to prevent excessive spreading of rumors.
Hello,
i’m tempted to make one or two board based on your github data.
A friend of mine work in pcb manufacturing and I can obtain some boards by him.
But I don’t know if the last pcb révision (Rev.E) is stable enough or if I must take the “Rev. C” ?
Please, have you some advice to make a working unit (i’m not hardware engineer but I shall understand a little) ?
So anyway I thank you for sharing your work and for make things possible for SNES lovers !
Good job !
Kind regards, From France,
Nicolas.
Lunar_Lander@live.fr
Hi,
please use Rev.E, there have been some pinout changes and the current firmware won’t work with Rev.C.
To make a working unit you will need to:
– make the PCB
– solder all the components (except the PIC12F629). If you do it by hand, start with the BGA memory (and maybe the RAs) in a reflow oven, then do the rest. I recommend that you stuff the SD card slot last to minimize the chance of flux or cleaning agents getting inside, harming the push-push mechanism.
– put a ferrite bead (SMD 0603) on JP341 (see http://www.flickr.com/photos/sd2snes/6251262232/sizes/l/in/photostream/ in the lower left)
– solder JP401
– program the PIC with the SuperCIC key firmware and solder it in (U331)
That’s pretty much it hardware wise. To build the firmware and associated programs see src/README.
Note that the active git branch is currently ‘develop’. The ‘master’ branch will be used for actual releases.
Hi !
Thank for your reply and for the advice !
My boards are just arrived today so I’m entering in assembly phase now.
I would ask you if you have some stocks of componments and if you sell “kits of parts” (componments only) ?
I was thinking about you may have bought your parts in bulk and have few to sell…
If not, I will be very pleased to know where you buyed yours and If you know a good supplier which had correct prices in Europe, especially for the FPGA chip (I’am from France) ?
Anyway, I wish to thank you greatly for your support and dedication !
Keep it good man, you make many people happy (count me in ! ^^).
Beside that I’ve got my boards for a really low price (5 euros/board), so if I can give you one or two bare pcb for your tests or whatever, I will be more than happy to thank you with this very little !
You’ve got my mail, feel free to ask.
… feel free to delete this part of the message too. ^^
I thank you again !
Kind regards,
Nicolas.
I might also be interested in a kit. I can likely get the PCB made, but the other parts would certainly be handy rather than tracking down each. As Nicolas cited, you probably have tracked down some reasonably good places to buy these things by this point! Just curious if this is an option you are considering or might be willing to arrange for a few of us?
Are you having any problems with the PRAM running at high speeds (meaning, the 104Mhz it’s rated for)? I was thinking of replacing it with a SDRAM module, but I’m not sure if a two-layer board like you have now will cut it, I fear of running into all sorts of signal degradation problems.
Most boards I’ve seen go with four layers, I assume you didn’t because of cost?
Also, these boards also seem to dispense with the termination resistors for the SDRAM, which I assume is because the isolation provided by the ground plane is deemed to be enough. I wonder if I could get away with keeping your two-layer design and adding those.