Anyone bought a Sega Nano Arcade? (MD clone)

Its not a problem with the sound emulation. Its just a 60hz rom running at 50hz. So it sounds terribly slow.

The 50hz version of Sonic had sped up music to compensate. I will eventually change the roms for 50hz versions - just not really had time.

 

That's not slow music, that is off-key music. Also the Pal Sonic on any real hardware sounds the same as the NTSC version in terms of key. Maybe the guy on YouTube has an odd system? I watched the English guy who had a VF one and Sonic one. I would post the link yo the video I saw but I'm on the phone, sitting in my car in a tunnel thanks to some prick who has crashed at the other ened.

Yakumo

 

Mine (in person) just sounds slow, nothing else. (to me at least)

Will see what happens when I get around to swapping the roms.

 

I wish i could try to mess with it but tsop adapter for willem programmer are way too expensive. The emulation on mine seem very good and game play at regular speed except for the sound that is not playing correctly. If what you are thinking is true, we should be able to more or less reproduce the sound issue by forcing an emulator to play 60Hz NTSC Sonic in 50Hz PAL right?

Edit: I just tried to run Sonic NTSC rom in PAL on Fusion and this doesn't sound like what I'm getting on my Sega Nano so I'm not sure this is what's causing the issue.

 

Are you certain it's emulated and not just a poor hardware implementation/clone? Remember even official Sega consoles had varying sound quality.

 

Well, emulated might not be the proper word here, most likely badly cloned with somekind of CPLD. I saw some youtube video from europeen that seem to have the music play badly and really slow like Bad_Ad84 was describing but mine play differently. I supposed it's because the nano play 60Hz rom with bad sound on a 50Hz which would not only make it sound bad but also slow. I'll try to record a video of it.

 

Download parts.rar from one of my earlier posts. Download the emulator "gens" and open 3.bin from my rar.

Select country as Europe and that sounds identical to how my nano sounds on my TV.

 

I tried already, that's the test rom I used. It doesn't sound like mine.

Here a quick video I made:

http://youtu.be/f9HcJFFWcQI

I suppose your's sound slower because you play it on a PAL TV set and the rom is the NTSC version. It's bad sound played slowly, effectively making it sound even worse

 

Seems like the same old Firecore hardware from AtGames that is also on Retrogen, Gopher, etc... even interface is similar.
The sound is notably wrong on these devices because FM chip implementation has been simplified, probably for optimization.

And they are probably not real hardware clones but SoC running an emulator, but just to be sure, what is the value of the clock signal ? What is strange is that horizontal borders are there (quite visible on Sonic 1) and emulators generally don't bother emulating that

Actually, it's the opposite: flash was programmed as little endian (LSB first). 68k is big-endian so start address ($200) should be read (from PC at $4) 00 00 02 00 and not 00 00 00 02. That means original ROM were byteswapped because the CPU running emulator is little-endian, Gens does the exact same thing after loading ROM files.

I analyzed your dump and here is the complete layout:

Menu ROM is not playable in emulators or real Mega Drive, it is probably relying on FireCore hardware for initialization.

Some of the commercial ROM (Sonic 1&2, Alex Kidd) seem to be patched (for level select maybe ?), and won't work on real Mega Drive.

Custom games were developed in 2003 and 2005 by Devworks Game Technology for Tectoy. I extracted them and uploaded the whole package here if some are brave enough to try them out:
http://www.mediafire.com/?bvhuy6vby555y0v

 

The dump I uploaded is not how it was programmed on the chip.

 

I meant the byte-swapped dump, which is Genesis ROM correct format, off course

 

Not very sure about, if that would bring anything in a better light, since back then, almost non of the Euro releases were adapted to the 50Hz standards, and just runned on the 17% brake.

 

The Sonic games had their music sped up to compensate for the slower speed from my googling. So running the US rom at 50hz makes it sound slow.

Also, as said above - I can emulate exactly what I hear by doing the same in an emulator.

 

You should watch my video if you haven't done so, it doesn't sound the same as the other video from youtube European user. so while yours really must sound slowed down, it's not the main issue IMO. Btw, any progress on injecting your own rom to the flash chip?

 

Just not got around to it yet. =/

 

i know i am a bit late to ask...

Can this portable console be used as a usb controller so i can use it as mouse stick?