Modded Sega CD With MultiBIOS

Posted on September 7th, 2007 by JMT.
Categories: Articles.

I put it off for a long time (I got the multibios 4 years ago! and almos lost it when I moved after college. I found it in the bottom of a bag destined for garbage half a year after moving in. Since I’d left it in the original mailing envelope, it looked like trash at some point).

My soldering iron shucks (got it at radio shack). It can’t even melt solder if you apply it directly to the tip. Probably because I didn’t tin it when I first used it. It only works for a minute if I sand the tip with metal sandpaper. I’ve done a couple minor mods with it, but didn’t want to risk the multibios and soldering all 40 pins with it.

So rather than spend money on a descent iron, I asked my tech at work who solders electronic components all day to do it. He did an excellent job.

I also added a modification of my own. I added a dual-pole single-throw switch to let me choose between the original bios and the new bios (which is soldering directly ontop of the old bios). I did this because I didn’t want to lose the original bios music/animation deal. In the pictures on arakons website for the multibios, it shows that he’d modded the bioses to splash the multibios logo instead of the segacd logo. Also, I didn’t know if it used the model 2 or model 1 bios, and I think that the music and animation on the model 2 sega cd (us version anyway) are vastly inferior to the model 1.

So, just to be safe (and in case the mod didn’t work), I have the extra switch to revert back to the original bios.

I put the three switches on the left side (opposed side as the bios, but there’s more room, and the wires wrap around the shielding box around the CD unit fine on the model 2).

I was afraide the bios could have gone bad after 4 years. I’m always worried it might have gotten some sunlight and the UV erased it or something. But yay it worked!

I’d purched half a dozen japanese megacd games off e-bay a long long time ago, and finally get to play them. First of course, the main reason I got the multibios in the first place, was to play the Ranma 1/2 game. It’s a digital comic, so even though I can’t understand half the kanji, if you click enough times you keep running through it.

I tried the Dynamic C.C. Golf. Either I suck at it, or the game is impossible. No matter how close to the strike meter I am, it always hooks or slices wildly, and it is impossible to determine the right power for non-max distances (including all putting).

I then played Devastator. It’s a Wolfteam shooter (half platform, half horizontal). Nothing special, but I played to (presumably) the last level on my first try. Then it was one of those levels where you have to face all the past bosses in a row, but you always restart on each death, so after about a half hour I gave up.

Got a few more I haven’t tried yet. Urusei Yatsura, Yumimi Mix, Sengoku Densho, and Nightstriker. I should probably pick up Ninja Warriors one of these days too.

This is my custom mod to switch between the original BIOS and the multi-bios:

Add switch to switch pin 20 between old and new BIOS.
Use dual-switch
A - B - C
D - E - F
Attach pin 1 to pins A and F
Attach PCB hole for pin 20 to pins D and C
Attach old bios pin 20 to B
Attach new bios pin 20 to E

This is the EEPROM chip used to house the MultiBIOS:

M27c4002
-12f1
B88ag
St 9635e
Singapore

0 comments.

Rare “Lords of Thunder” Turbo Duo Promo VHS

Posted on June 5th, 2007 by JMT.
Categories: News.

I have a rare “Lords Of Thunder” Turbo Duo promo VHS I’ll be selling at the Game Convention.

It has Masamune Shiro cover art, and the back contains screen shots from the game and © 1993.

The video is about 15 minutes long, and contains footage from the game and “live” interviews with kids at arcades and random old people on the streets talking about how much they love the game and turbo duo and how it’s the best shooter they’ve ever played. One amusing moment actually acknowledges the existence of the Sega CD version of the game, but they make some snide remark about that nowhere system with all the FMV games.

0 comments.

Poor Selection In New Arcades

Posted on June 3rd, 2007 by JMT.
Categories: Articles.

I haven’t really gone to a Circus Circus or Chucky Cheese in a while. But twice now I’ve gone to these new more adult arcades. (more…)

0 comments.

Afterburner Climax

Posted on June 3rd, 2007 by JMT.
Categories: Articles.

We went to the new Brunswick Zone XL and they had to move us to a different lane during our game, so they gave us 6 free games and 10$ each in arcade credit.

So to my surprise, (more…)

0 comments.

Evaluation of 100’s of Controllers

Posted on May 23rd, 2007 by JMT.
Categories: Articles.

As you know I’ve been preparing for MGC. I have an absurd amount of controllers, especially for Genesis, and they’re all different. (more…)

0 comments.

Cataloging Your Video Game Collection

Posted on May 14th, 2007 by JMT.
Categories: Articles.

I just picked using Excel (or any free spreadsheet program). I looked at Access once, but it took so much effort just to create the record types and field options. With a spreadsheet, I could just create one header row with the fields, and then fill them in. (more…)

0 comments.

I’m A Vendor At Midwest Gaming Classic

Posted on May 7th, 2007 by JMT.
Categories: News.

http://www.midwestgamingclassic.com/

June 9th and 10th!

How would you like have your female counterpart beg you to go to MGC? It’s easy, just show them this:
http://www.beadandbuttonshow.com/bnbshow/
Same weekend, same town (well, 30min drive).

0 comments.

Why Sega Failed

Posted on March 13th, 2007 by JMT.
Categories: Articles.

I think the entire problem was with customer loyalty. There’s only one things that makes a company #1 for the long haul, and that’s loyal customers. (more…)

0 comments.

Categorizing Shooters

Posted on March 7th, 2007 by JMT.
Categories: Articles.

Of course it’s cool, since shooters are one of my favorite games. But, it just seems like since the late 90s, shooters have been having some kind of contest to see who can possibly get he most bullets on screen at a time. (more…)

0 comments.

Shooter Crash

Posted on February 7th, 2007 by JMT.
Categories: Articles.

Compared to other genres, I actually think shooters (not fps) have one of the highest ratios of fun-to-flops. (more…)

0 comments.