DC Serial Port

General Dreamcast discussion applies here. Before posting here please check the other forums in the Dreamcast section to see if your topic would fit better in those categories.
Forum rules
Please check the other forums in the Dreamcast section before posting here to see if your topic would fit better in those categories. Example: A new game/homebrew release would go in the New Releases/Homebrew/Emulation section: http://dreamcast-talk.com/forum/viewforum.php?f=5 or if you're having an issue with getting your Dreamcast to work or a game to boot it would go in the Support section: http://dreamcast-talk.com/forum/viewforum.php?f=42
User avatar
Bob Dobbs
Sub Genius
Posts: 4413
Dreamcast Games you play Online: PSO, AFO, PBA, 4x4 Evo, IGP, Planet Ring and Max Pool
Location: USA
Contact:

DC Serial Port

Post by Bob Dobbs »

What does the DC serial port really do other than ripping DC games and linking certain games?
Regards,
Bob Dobbs

User avatar
Anthony817
Shark Patrol
Posts: 4036
Location: Fort Worth, Texas

Re: DC Serial Port

Post by Anthony817 »

It was primarily designed just for system link play, and I think the Midi thing used it. It only has a max transfer rate of 2mbps, so it is very limited in what you can do with it. The SD adapter only uses that port as the first option they were going to go with, the modem port, was to difficult too program for, and is beyond most homebrew devs cpacity.

So in short, the serial port was somewhat of a last resort just to make an easier sd adapter. Using it for something like a homemade modem could work, but I think it is highly improbable as it was only really designed for 1 thing, and that was system link.
Image

User avatar
AdamKoralik
Sunday Shootout
Posts: 664
Location: Chicago, IL
Contact:

Re: DC Serial Port

Post by AdamKoralik »

Items that use it (that I have any way).

[youtube]http://www.youtube.com/watch?v=0vwRtKknjqg[/youtube]

[youtube]http://www.youtube.com/watch?v=0yAmva5nkZo[/youtube]

[youtube]http://www.youtube.com/watch?v=A9iuxv3skO0[/youtube]

User avatar
game_player_s
Graffiti Grind
Posts: 323
Dreamcast Games you play Online: Will return when I return and if not then I didn't.
Location: Pioneer 2
Contact:

Re: DC Serial Port

Post by game_player_s »

I saved a guide from some Japanese website ages ago on how to wire a true DB9 serial port into the system. And the person who made the guide was able to successfully use an external dial-up modem with the system through the port with what appeared to be a regular Passport disc.
Now There are no Limits -- SEGA
http://www.tweeg.psoarchive.com/

User avatar
brourke228
Game Server Admin
Posts: 705
Dreamcast Games you play Online: Only PSO v2, 4x4 Evo, Quake III Arena, StarLancer, Max Pool, Planet Ring
Location: RI

Re: DC Serial Port

Post by brourke228 »

game_player_s wrote:I saved a guide from some Japanese website ages ago on how to wire a true DB9 serial port into the system. And the person who made the guide was able to successfully use an external dial-up modem with the system through the port with what appeared to be a regular Passport disc.
I would be interested in reading about thsi if you can find the link.
Regards,
brourke228


Image
Image
Image
Image
Image

TeamXlink
Rank 9
Posts: 950

Re: DC Serial Port

Post by TeamXlink »

brourke228 wrote:
game_player_s wrote:I saved a guide from some Japanese website ages ago on how to wire a true DB9 serial port into the system. And the person who made the guide was able to successfully use an external dial-up modem with the system through the port with what appeared to be a regular Passport disc.
I would be interested in reading about thsi if you can find the link.
I also am interested in reading this.

That makes a wide range of possibilities.

User avatar
game_player_s
Graffiti Grind
Posts: 323
Dreamcast Games you play Online: Will return when I return and if not then I didn't.
Location: Pioneer 2
Contact:

Re: DC Serial Port

Post by game_player_s »

Yeah, if I read correctly he was getting USB 2.0 speeds (480Mbps) speed through the RS-232 (Serial) port he added. I can't read Japanese, so that's just what I'm guessing that he says in this. He had a great website, thankfully Archive.org has all of it available to view. The specific page with the Serial port mode is here:
http://web.archive.org/web/200502081435 ... dcser.html

Rest of Niga's (F. Nigawara) site can be access from here:
http://web.archive.org/web/*/http://nig ... index.html

If you hunt around he had an interesting page that referenced the NetBSD DC project with a link to a site regarding the development of both an ISA Card port and IDE HDD port adaptors for DC. Apparently working models were made and successfully used in the DC version of the NetBSD OS, something I'd never known about until just tonight. Seems the project ceased in mid-2002 as the mirrored site wasn't updated beyond June of that year.
Again though the original site for that is gone now, but I found a decent mirror of it here in better condition than Archive.org's capture of it:
http://www.fuzzymuzzle.com/Kiyoshi/Drea ... 20Page.htm

That IDE adaptor is extremely promising considering an IDE-CF adaptor was successfully used on it. CF cards offer Read/Write speeds up to three times faster than a Class 10 SD card. Class 10 SD cards, best presently on the market, have 30MB/s read. Fastest CF cards on the market have 90MB/s read, and the slowest SanDisk is marketing now (Ultra Series) is 30MB/s. Truly opens up a Pandora's box load of oppurtunities.
Now There are no Limits -- SEGA
http://www.tweeg.psoarchive.com/

User avatar
Anthony817
Shark Patrol
Posts: 4036
Location: Fort Worth, Texas

Re: DC Serial Port

Post by Anthony817 »

Wow, that sounds amazing. Wish something came out of it.
Image

  • Similar Topics
    Replies
    Views
    Last post