Vs. Dr. Mario Schematics

 Nintendo Vs  Comments Off on Vs. Dr. Mario Schematics
Jan 162017
 

I’d like to give something back to the arcade community so I have released my copy of the schematics for Vs. Dr.Mario below. This will enable Nintendo Vs. owners to design their own daughterboard to play this game without the difficulty and cost of finding an original PCB.

Vs. Dr.Mario Schematics (33 downloads)

Atari Dunk Shot to Tehkan World Cup

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Jan 092017
 

I bought this empty Atari Dunk shot cabinet on eBay over Christmas 2016 with a view to converting it into a Tehkan World Cup cabinet. I first played Tehkan World Cup at Butlins Skegness around 1986, roughly at the same time the World Cup in Mexico was on. It was a game that was always surrounded by kids hammering the trackball controls. I’ve been on the lookout for one of these for a while, and have only seen about two come up for sale in nearly nine years of collecting, so when I spotted this cabinet twenty minutes down the road from me I had to buy it. The machine has the same dimensions as a Tehkan World Cup, so I hope I can make a decent job of it. Keep an eye on the blog for updates as there is a lot to do!

Popeye Bootleg PCB

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Dec 182016
 

I acquired a few untested Popeye Bootleg boards recently and thought I would have a go at repairing them. Most of the boards were missing various bits like capacitors, or crystals, so I replaced all the parts I could obviously see missing and thought I would see how things were from there. What was interesting is that each of the boards was designed and looked slightly different, even thought they were all the same game!

I made up a crude Jamma adapter using the pinout details for a single bootleg Popeye PCB I found on Mikes Arcade and tested each game.

Two of the PCB’s booted but there were issues with sync, and it looked like this on power up:

I found various posts on the internet from people with similar issues, and most had given up trying to get the PCB to sync thinking that it was a board fault.

I started to wonder if the pinout on Mikes Arcade was correct for my PCB, as I had come across other sites listing completely different pinouts, so I went about working out the correct pinout for my PCB and after rewiring my Jamma adaptor I was greeted with the following result:

What is interesting, and seems to be the same for every bootleg Popeye PCB, is that the opening title screen has graphic issues as you can see in the picture. The game plays perfectly, but a bootleg board always has this issue. I checked the game in Mame, and the fault is not there so I’m wondering if it has somehow been fixed in that version??

Anyway, for those that have given up trying to fix a Popeye bootleg, or think they have a PCB with a sync issue, I would suggest looking for different pinouts to see if that’s the problem.

The pinout I used can be seen below. I gave these details to a fellow collector and he found that most of the pinout was correct for his PCB, but he had to swap pins 7 to h for the coin credit, despite it working fine on pin 7 for both my PCB’s!

Outrun Midi De-Conversion

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Sep 062016
 

I bought a Midnight Run cabinet from a fellow collector when I first got into the arcade scene many years ago now. It was originally an Outrun Midi cab that had been converted to Midnight Run by Brent Leisure. I always planned on turning it back into an Outrun cab as it’s one of my favourite games but just didn’t get round to it. So I’ve had some time off from work, and started stripping all the Midnight Run parts out of the cabinet. I’ve got to say that it looks like Brent Leisure did a pretty decent job of making this very tidy.

Here is all the wiring and parts that needed to come out:

and here are most of the parts that need to go in:

Here is a picture of the front of the cab:

I managed to sort out most of the wiring but some of it got me stumped. Luckily a fellow collector happened to have the only Outrun Mini wiring diagram that seems to exist in the whole world, and this will no doubt be invaluable. I’ve attached the manual and wiring diagram below as I’m sure it will help out others aswell:

Outrun Mini Manual (15 downloads)