everdrive for SNES!

[KRIKzz]

just want notice that now i have a lot of time for my SNES flashcart project. all functions already works and projet is very close to finish!

my handmade proto PCB:

[link83]

Thats awesome! :love2:

I am just wondering what the USB port is for? Also, any chance it can support DSP games? (Either through physically adding the DSP chip, or through hardware emulation)

I hope there is another group buy when its finished...

<EDIT> Is it also going to be called EverDrive? Or will the final revision be called something different, like EverSNES, EverSuper, or EverSystem etc?

[KRIKzz]

Thats awesome! :love2:
<EDIT> Is it also going to be called EverDrive? Or will the final revision be called something different, like EverSNES, EverSuper, or EverSystem etc?

it will be called everdrive, may be super everdrive

[mdmx]

it will be called everdrive, may be super everdrive

why don't you call it SuperDrive ;-)

[KRIKzz]

usb port it is optional feature. SD and USB can be used for game upload, i use usb for debug and for fast OS upload (directly from PC, immediately after code compilation), so i just can press "build" in my IDE, and result will be shown on console (:

DSP/superfx not supported. may be later i will made some additional t-connector for DSP donors attach

[link83]

usb port it is optional feature. SD and USB can be used for game upload, i use usb for debug and for fast OS upload (directly from PC, immediately after code compilation), so i just can press "build" in my IDE, and result will be shown on console (:

That sounds really useful, especially for developers :nod:

DSP/superfx not supported. may be later i will made some additional t-connector for DSP donors attach

From your pictures it looks like there might be enough space on the left hand side of your cartridge to leave a space/socket to solder in a DSP-1 chip? You would not have to install a DSP-1 yourself, but maybe just leave a space on the PCB for users to install if they wish? (At least until a T-connector is available)

...It would be good if you could hardware emulate a DSP-1 chip though ;-)

This is really great.

I'll certainly buy one as soon as available, especially if we can add Super FX or any other special chip in the future.

I dont think it will ever be possible to support Super FX with a T-connector, because on Super FX games the ROM is accessed through the Super FX chip itself, and the ROM input pins are not available on the cartridge edge connector:-
http://www.snescentral.com/pcb.php?i...m=0&side=front
The only 'easy' way to support Super FX would be through hardware emulation of the Super FX chip itself, or by desoldering a Super FX chip and making a 'Super FX Only' flash cartridge.

You can support DSP chips through a T-connector though. The DSP-1 is the most commonly used DSP chip:-
http://en.wikipedia.org/wiki/List_of...ment_chips#DSP

[Greg2600]

You can support DSP chips through a T-connector though. The DSP-1 is the most commonly used DSP chip:-
http://en.wikipedia.org/wiki/List_of...ment_chips#DSP

The retrousb SNES CF flash cart comes with a DSP-1 chip on its board, enabling games like Super Mario Kart. He could go the other way and include the SA-1, which is used by games like Super Mario RPG. Theirs also uses CF cards, which I believe load much faster than SD.

[link83]

The retrousb SNES CF flash cart comes with a DSP-1 chip on its board, enabling games like Super Mario Kart. He could go the other way and include the SA-1, which is used by games like Super Mario RPG. Theirs also uses CF cards, which I believe load much faster than SD.

Not really, because the SA-1 is like the Super FX in that the ROM is accessed through the SA-1 chip:-
http://www.snescentral.com/pcb.php?i...m=0&side=front
If KRIKzz made an SA-1 flash cart he would have to include an SA-1 chip on every cart, and that would be quite costly and destructive to buy hundreds/thousands of SA-1 games just for the SA-1 chip. Not only that but it would then be an 'SA-1 Only' flash cart and could not be used for other games.

retrousb SNES cart has big FPGA chip and DSP implemented inside of this FPGA. also retrousb use ram for game hold, i use flash in my carts. flash mutch more slow for write than ram, but games will stay in memory after power off. CF ussage have not sense if cart based on flash.

Actually I am positive the DSP-1 chip is not implimented inside FPGA on SNES PowerPak, because originally you had to choose to buy a cartridge with or without the DSP-1 chip installed at the retrousb store checkout, and it used to cost extra to have one fitted.

Here is the SNES PowerPak release thread at nesdev:-
http://www.nesdev.com/bbs/viewtopic.php?t=5708
Notice some of the following posts by "bunnyboy" the creator of SNES PowerPak:-

Optional DSP1 chip for Mario Kart.

interesting, are any additional enhancement chips like the super fx chip for example planned and are they possible to implement?
Since there is no mention of it and the real DSP1 is installed manually I assume not, but I thought i would ask.

Enhancement chips are simply not happening. DSP/C4 can probably be quickly done with a PIC, but by the time you make the Super FX you are a significant way to doing the entire system. For the small number of games and the big increase in hardware it was a design decision early on not to do them.

Also on page 2:-

PS. About DSP1 support, I have a donor cart but there arent any instructions on how to install it. I'm guessing that theres a socket on the pcb it'l solder straight into and does it get completely disabled for non DSP games?

Desolder from game board, solder onto SNES PowerPak board, done

I suggested adding a space for the DSP-1 on the Everdrive PCB because from what I understand it should not affect any other games when its installed. The ROM is not accessed through the DSP-1:-
http://www.snescentral.com/pcb.php?i...m=1&side=front

More DSP-1 info here:-
http://users.tpg.com.au/advlink/dsp/dsp1.html

So if you have a space on the PCB users can optionally install a DSP-1, but if there is no space/traces thats not really an option. The only problem is I think the DSP-1 requires SRAM, and I am guessing the Everdrive will use FRAM? It was just an idea, and I thought if its easy to do it would be good to have DSP-1 support as an option (Although maybe KRIKzz might want to consider making a DSP-1 PIC? ;-))

I hope all that made sense!

[KRIKzz]

Not really, because the SA-1 is like the Super FX in

Actually I am positive the DSP-1 chip is not implimented inside FPGA on SNES PowerPak, because originally you had to choose to buy a cartridge with or without the DSP-1 chip installed at the retrousb store checkout, and it used to cost extra to have one fitted.

I hope all that made sense!

ah you rihgt. i even don't know why i thought that retrousb imlement dsp on fpga. shame :redface:

unfortunatly PCB's for my snes flashcart already odered on factory, so i can't add holes for DSP

Would the SNES Everdrive be compatible with any games that RetroUSB's SNES PowerPak isn't? Or vice versa?

compatibility will be same like in RetroUSB, except DSP1 games. SNES PowerPak damd good (:

[indask8]

This is really great.

I'll certainly buy one as soon as available, especially if we can add Super FX or any other special chip in the future.

[BM-Viper]

Awesome work KRIKzz, can't wait unti it's out so I can pick one up :)

[APE]

Put me down for one of these for sure.

[nesworld]

Oh I'd be interested in one for these for sure :-)

[causticsoda]

great work Krikzz!, next up Everdrive64? :D

[sheath]

I will definitely be buying one of these as well. Between the Genesis one and this you're about to save me a fortune in games I don't want but need access to for comparison purposes.

Any chance of a HuCard version in the future?

[gazcbm]

As a proud owner of an EverDriveMD, I will definatley be ordering one of these. Price point?

[KRIKzz]

Any chance of a HuCard version in the future?

what is the "HuCard" ?

As a proud owner of an EverDriveMD, I will definatley be ordering one of these. Price point?

will be available in end of next month, price 75usd aprox

great work Krikzz!, next up Everdrive64? :D

still not decide who will be next

[n64coder]

still not decide who will be next

My vote is for N64 version.

[sheath]

what is the "HuCard" ?

PC-Engine or TurboGrafx-16 games.

[KRIKzz]

PC-Engine or TurboGrafx-16 games.

currently i even have not TurboGrafx-16