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Dav

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Posts posted by Dav


  1. This board can theoretically address 8 MB of rom by stacking eproms. I've no idea if the power supply would handle it or not, as I've not tried more than 2 eproms in it at once.

     

    This is an early prototype, the ram didn't actually work on this one.

    post-1541-1087313425_thumb.jpg


  2. I am not a lawyer so I couldn't really say but, they can confiscate all the machines I"m sure. They can make you pay their legal fees as well, which I'm sure would be padded like crazy. Not sure if they can take a percentage of you past profits or not, I don't see why not though. Your locations may not like being in the newspaper for having illegal machines confiscated, so you could lose locations. The competition for locations can be pretty cut throat. Not sure if a city would pull your licenses for something like that either, probably not though.

     

    Just confiscating the machines would probably be a pretty big dent in your bottom line. The arcade business isn't like it used to be, and those boards probably take a long time to pay for themselves.


  3. Every operator has competition and/or disgruntled employees. The business software piracy people seem to make a lot of money from disgruntled employees.

     

    It is ironic that twobit is the one reposting the advertisement since they got sued by namco already. But I guess they want everyone else to play by the same rules they have to.


  4. The cheap programmers are down to $30 now. For an eraser I'm using a g7 germicidal bulb in an old arcade marquee fixture in a homemade box. Alternately you can use nvrams so you don't have to erase. e.g. A dallas 1220 will work for a 2k rom. Add a zif socket to your cart and it couldn't get much easier.

     

    Dave


  5. The one's I've seen were a single board computer, either a pc style or the 3 in 1 had a risc processor like a playstation.

     

    The double donkey kong is actually a board hack. The guy that invented it quit doing it. Mike halaand does them. http://www.mikesarcade.com/cgi-bin/store.pl There's another guy that does them or at least used to. Dave Graboski? at Electronic amusements. He also sells 3in1's etc. I can recomend Mike completely. No comment about Dave.


  6. Right.. all hardware operation.. and you can even use the coin op feature.. wich means you can even put it on a rout if you so desired;) truley just like the real thing!! If I score that DK board tommorow cheap' date=', well, going for the restore and resale.. if I get out bid... going muticade;)[/quote']

     

    A pc is more complex but it's also repairable. Nobody I know will touch one of those multiboards. And it's not just like the real thing, I can tell the difference between emulation and the real thing.

     

    BTW you'll have really funny colors with multicade. Nintendo monitors invert the video.


  7. And Gyruss is really nasty' date=' because the some slices are used in different segments. That's different to the three ones I did.[/quote']

     

    I wasn't expecting that, I wondered if that was normal for these or if I was just lucky on my selection. :)

     

    For a multicart 32k adds up fast, I think I might be better off implementing the pb banking.


  8. It's the read handler for the cpu, it normally just reads the rom and sends the value to the cpu. What I was trying to do was have it set a flag if it actually read from each slice. I'm trying to reduce the data to look at, I don't wan to log every read.

     

    currently the log looks like this. Gyruss BTW

     

              PC     slice    bank 1 2 3      
    
    -----------------------------------------------
    
    Bank   PC fca2   Set 3 = 6;    0 0 6     
    
    Bank   PC fca5   Set 2 = 5;    0 5 6 Cons
    
    Bank   PC fdb8   Set 1 = 3;    3 5 6     
    
    Bank   PC fdca   Set 1 = 0;    0 5 6     
    
    Bank   PC fdf0   Set 1 = 3;    3 5 6     
    
    Bank   PC fdfc   Set 1 = 0;    0 5 6     
    
    Bank   PC fd5d   Set 2 = 1;    0 1 6     
    
    Bank   PC fd60   Set 3 = 2;    0 1 2 Cons
    
    Bank   PC fd66   Set 2 = 5;    0 5 2     
    
    Bank   PC fd69   Set 3 = 6;    0 5 6 Cons
    
    Bank   PC fcdc   Set 1 = 3;    3 5 6     
    
    

     

    So far I know to ignore combinations if they are banked consecutively. The ones with short gaps could probably be ignored but I want mess to sort that out for me, by clearing read flags for each slice every time there is a bank and setting them if a slice was used. I was able to make it do that but in the process it quit sending the fetched values to the cpu and the game no longer ran.

     

    I'm not really that good with C, I can usually get by but it seems the a2600 driver is too much for me. If I can figure that out then the process pretty much becomes automatic.


  9. What no source?

    There is no source' date=' I just analyze the z26 tracefile for bankswitching and used slice combination and then patch the ROM.[/quote']

     

    I've been playing with the mess source code. I have it outputting the bank and pc for all bankswitching to the error log. Then a vb program compiles this and automatically builds a rom and a list of pc that bankswitch to each bank. The next step is for the vb program to patch the new rom but I haven't gotten that far yet. The problem is I ended up with an F4 rom not an F6 so I got discouraged. I think it might be easier to build a pb cart that to convert them automatically.


  10. Like when a Priest has his Penis in a 12 year olds bum but hes just outside of the international boarder on a ship?

     

    Yuk, I'm sorry I read that. :)

     

     

    BTW I found a SNK Bermuda Triangle in the shed I've never enven plugged it in but I can't find the other galaxian. I'm still adding stuff up.


  11. The actual code that Thomas has written is *STILL* owned and copyrighted by Thomas, regardless of the fact that the game was derived from a work by the same name on another platform.  

     

    Not that I want to get involved in this, but I'm not sure that would hold up. Midway was forced to give up the rights to their Pacman based games to Namco. Ms pac was designed as a series of overlays so they could stay legal copyrightwise but it didn't help.

     

    I think most of us would agree though that sometimes legally right and morally right are not the same.

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