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BIG Trev

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BIG Trev last won the day on October 3 2023

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  1. Thanks for the info. I'll check that and get some pictures of the fault.
  2. Can anyone tell me which ram on an MVS 4 slot corresponds to corrupted text. I have a diagnostic rom but it only checks so far and I can't read where the error is due to the corrupted text. Cheers Trev
  3. I have an MVS 4 slot cabinet that needs a board repair. It's had minor battery leakage and has corrupted text. I believe it has a ram error but as I can't read the text so I'm not sure where the problem is. Is there anyone in Australia who repairs these boards? I'm in NSW but would post it to anyone who's had success with these boards. Cheers Trev
  4. Hi Jeff, It's 705mm wide and 650mm tall. Give or take a few mm.
  5. Thanks Jeff, I'll get some measurements for you.
  6. Some pictures of the inside. I put the legs on and mounted the backbox today. It'll need a new power lead and fuses before I do anything else. It'll then need a new back to the cabinet. It looks to be in ok condition on the inside but will need a good clean. The playfield does have Mylar on the lower half and around the pop bumpers so it's in pretty good condition. If I get it working I'll look into finding a door for the backbox and maybe a set of stencils. Can you get decals for the apron and shooter rod cover? Most of the pink metalwork has badly faded.
  7. Today we (Dorian and myself) sat down with two laptops and a 42" screen so we could both see what the other person was doing and did some coding. We created attract mode code that can be used with the lcd screens and / or addressable leds. This code will probably be adapted for use in the Thomas The Tank Engine pinball too. We managed to get the the code to check the start button every 12 microseconds so there will be no need to hold the button in like you need to on the Thomas pinball. The animation data still needs to be put in an array but we can use this data to slow down or speed up the animation, select a screen and select an image to display on that screen. There's also a image value to clear a screen to black. While we were on a roll we decided to look at the LCD controller code. We needed to be able to select which screen an image is to be drawn on by turning a chip select pin to a low state. We got this to work by 7:30pm tonight at which time I had to take Dorian home. There are still a couple of tiny issues that need to be corrected which we'll get to during the week. The next step will be to hook the screen controller up to the main controller and enter some data for a trial run of the attract mode. As mentioned previously we also numbered the displays for both of us to reference in our code. When we get the attract mode working, the port read code functioning and the nixie code for the War Of The Worlds pinball working we're going to continue work on rebuilding the CNC router so we can cut a test playfield.
  8. Don't mention Hankin in a Home-brew thread.😉
  9. It's going to be based on the Shark playfield with a few mods to fit the screens. I'm not going to cut up an original Shark playfield.
  10. Wrong thread but there will be multiball the Aussie Arcade pinball I'm still thinking about the rules for War Of The Worlds
  11. We discussed some ideas for the attract mode and other coding ideas for allowing 4 players today. Just a short day working on it but the ideas are slowly coming together into some workable ideas.
  12. We set up the power supply for the nixie tubes today and discussed coding ideas for attract modes. Dorian started breadboarding a nixie driver board to allow us to test everything before committing it to a custom pcb. The nixies look better in person. It's getting exciting as we're really close to getting the display up and running. The nixies use 170VDC so we used an inverter power supply that runs off 12v and supplies the 170v to the tubes. It's running off a pc power supply at the moment. The nixies only use about 7ma of current per display so they won't use much current for all 12 displays. We're getting close to designing circuit boards for the Nixie drivers. Designs are still subject to change as we try different ideas.
  13. Four players will be enough of a challenge for the time being. 😉
  14. We've (Dorian and myself) been laying out the small lcd screens on my spare Hankin Shark playfield and numbering them so we can ensure our separate codes for the main game (mine) and the lcd driver code (Dorian's) placed in several ESP32 boards, uses the same numbering conventions. We've also been discussing how we expect the game code to interact with the satellite controllers so we're on the same page there too. I've started designing a PCB system for the LCDs using Design Spark PCB. I'm hoping to make this game have a two or three ball multiball and we're thinking of making it have up to 4 players. There's not a lot to look at at the moment but things are happening in the background. We're going to get the game working with simple sprite animation to start with and modify it to more advanced animation at a later date.
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