Sega CD MP3 Player?

Zel Rai · Post by **Zel Rai** » Thu Oct 25, 2007 8:41 am

I recently acquired a Sega CD and I was wondering if it would be possible to make MP3 player software for it so I can listen to my favorite songs with my television using 1 CD.

Thank you.

Fonzie · Post by **Fonzie** » Thu Oct 25, 2007 8:52 am

I read somewhere that some companies did very light software mp3 player... But they call "light" something that run on a 25mhz risc, probably...

However, a 16Khz/8bit/mono have a 128Kbs bitrate (like a 128Kbs 44khz Stereo mp3 ^^), approx 10 hours of music per disc.

It is possible to make a player that stream 48khz/8bit/mono music... The quality would be nice (If I'm not wrong, almost CD quality for basic sound system). That's 384Kbs bitrate, 3 hours of music per disc ^^.

But It's just for the fun ^^ I wouldn't risk to kill my lens by listening to music everyday using my Megacd ^^

I did two streaming "engines" for megacd, if you want to take a look at the sources, don't hesitate to ask!

Héhé, good luck!

Zel Rai · Post by **Zel Rai** » Thu Oct 25, 2007 9:17 am

Thank you for the info, I'd probably use a lower bit rate for several reasons. Most predominate of which being on an average TV one wouldn't know the difference.

And yes steaming libraries would be of interest to me.

evildragon · Post by **evildragon** » Thu Nov 01, 2007 2:08 pm

You know, I used to play MP3's on my PowerBook 180 Macintosh laptop, and that was a 68030 CPU I think.

I think that same program does infact work on 68000.

TmEE co.(TM) · Post by **TmEE co.(TM)** » Thu Nov 01, 2007 2:13 pm

68030 is more advanced than 68010 and 68000, and probably not compatible (new instructions and features).

evildragon · Post by **evildragon** » Thu Nov 01, 2007 3:35 pm

Except that this one was made for a 68000. I never ran it on a real 68000.

I need a 7.5v power supply though to turn this laptop on to see what the program was.

Shiru · Post by **Shiru** » Thu Nov 01, 2007 4:12 pm

68030 @33Mhz + 68882 (PowerBook 180) vs. 68000 @7Mhz... Nothing more to say, I think.

tinctu · Post by **tinctu** » Fri Nov 02, 2007 10:50 am

68000 is like 286 (but much better than 286...) 68030 is like 386DX/40...

But with some hardware MP3 encoder in cartrige maybe...

Chilly Willy · Post by **Chilly Willy** » Fri Nov 02, 2007 7:58 pm

tinctu wrote:68000 is like 286 (but much better than 286...) 68030 is like 386DX/40...

But with some hardware MP3 encoder in cartrige maybe...

Yes, but the speeds are tremendously different. First, the 030 clock is about four times as fast. Second, the 030 uses fewer clock cycles per instruction than the 000. Third, the 030 has both instruction and data caches, while the 000 has no cache at all.

So the 68000 has no hope at all of decoding mp3 in real-time. I has seen a number of folks on the net who interfaced external MP3 decoder chips to the Genesis, like you suggest at the end. That is you only hope of MP3 on a Genny.