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DanB talks about the Emulation World - August 09,1998 by JoseQ
Daniel Boris,(DanB) has been working on the emulation scenesince very early in its development. He has worked in various projects rangingfrom Virtual VCS, an Atari 2600 emulator to the very well known MAME.We decided to drop in and ask a few questions about his experiences, theworld of Emulation, and MAME among other things. Read on to get to know DanB,yet another Emulator author InterViewed by EV.

1. Traditional first question. Can you tell us a little about yourself,and how and when you came about the world of Emulation?

Well, I am 30 years old and am an electronic technician from New Jersey, USA.My first real exposure to emulators was in the late 80's early 90's, whenthe Atari 8-bit Xformer emulator came out first for the Atari ST, then the IBM PC.Then in early 1996 I discovered Marat's Virtual Gameboy. This really fascinated meand since he had released the source, I downloaded it and played around with it a bit, thisreally got me interested in emulator programming. My first real project was portingthe Atari 2600 emulator, x2600 to DOS. This eventually became Virtual VCS, which wasthe first non-commercial (Activision Action Pack was out at this time) Atari 2600 emualtorfor DOS.

2. Which projects have you been involved in since you startedprogramming in the Emulation World?

As I said, the first was Virtual VCS. After that I did Virtual Super System which is anAtari 5200 emulator, then O2EM a Magnavox Odyssey 2 (Philips Videopac) emulator,Cloak and Dag-ulator, an Atari Cloak and Dagger arcade Emulator, and MAME. I alsowrote a program called 6502sim which is a generic 6502 processor simulator, whichcan be used as a 6502 learning or development tool.

3. You seem to have a passion for Atari hardware, what are the main reasons?

There are probably two reasons for this. First I really love the "classic" systems (pre-NES)and Atari was the king of videogames at this time. The second reason is that Atari usedthe 6502 processor in a lot of it's hardware, which is a processor I am very familiar with.

4. What has been your favorite project thus far and why?

O2EM is definitely my favorite. It was the most challenging and rewarding project I have doneso far. The first release of it was written with almost no technical documentation, I had toreverse engineer the system and work everything out on my own. I have also gotten an incredibleresponse to it. I get e-mails all the time from people saying that they had this system whenthey were young and that the emulator brought back a lot of memories.

5. Any particular interests you would like to develop in the future?What would you consider a challenge for someone like yourself to accomplish? (Something hard toemulate)

Some people find the newer games to be an emulation challenge, but for me it's definitely theolder ones. There are some old B/W Atari games that I would like to emulate that had some reallyunusual hardware features that would be a real challenge to emulate. I would also like to playaround some more with "emulating" the non-cpu games like Pong and Breakout. I have done someexperiments in this area but I would like to dig more into it when I have the time.

6. What would you say will become a brick wall in the emulatorprogramming world if anything? Do you think there are some barriers that will takeconsiderably longer to break?

I don't think there will be any real brick wall anytime soon. A lot of people think we will runout of things to emulate. It's true that we are running out of consoles that have not been emulatedbut even with consoles that have been emulated for a while there is still plenty to do. For examplethe Atari 2600 has been emulated for over 2 years now, but people are still coming out with betterversions of Atari 2600 emulators, there's still plenty of room for improvement in most emulators.There are also plenty of arcade games left to emulate. The only thing that I think that could reallyslow down emulation programming is if there is a consorted effort by game companies to crack downon ROM sites, but this will only slow things down it won't kill emulation completely.

7. What is your feeling about the current state of emulation in general?Too much popularity, or just fine? What would be a perfect state for you?

I think it's getting a little too much press at this point.

8. With more and more magazine articles about emulation out there, doyou think emulation is doomed to face a court debate soon?

I would not be surprised to see it happen especially with the newer emulators for systemslike the N64 or the Playstation. I hear lots of people say how emulation is legal andhow it has been proven in court cases in the past (and it has), but I have no doubt in mymind that the big guys like Nintendo or Sony could get it into court. They may not winbut I think they could get it to court. I think it would only take one case like thisto scare off a lot of emu authors. The area that faces more of a legal threat than theemulators themselves is the ROM sites. People try to come up with all kinds of rationalizationsto justify ROM distribution (like the delete after 24hrs thing), but the bottom line is,whether we like it or not, distributing the ROMs is illegal so the game companies wouldhave an easy case.

9. What do you think about MAME and they *[the way?]* it works? Do you see any majorchanges happening soon?

I think it's pretty much going to continue on the course it's on now. There is a push towardsASM cpu cores now, but these are not going to give too big a speed boost without some otherarchitectural changes. The nice thing about MAME is that there are a lot of people on the team,so we can always be doing many different things at once, adding new games, fixing old ones,improving the core code, etc.

10. If you had a paid full time job as a MAME programmer to do whateveryou liked to it, what would it be and why?

I would do basically what Neil Bradley has done with Retrocade, throw all theexisting code away and re-build things from scratch. MAME has come a long wayfrom when it first started and the architecture has evolved along the way toaccomodate new type of hardware, etc, but it would be great to start again fromthe begining knowing all the things that we know now.

11. Any comments to the programmers out there entering the world ofemulation?

DON'T DO IT!! ;) Just kidding. If someone wants to get into emu programming they reallyhave to understand what they are getting into. Writing emulators is a very complex process andpeople expectations these days are very high. When I first started writing emus, nobody wouldhave had a problem with an emu not having sound or joystick support, or if it only ran a couplegames. Today people's standards are higher and they expect more from emulators. The other thingto remeber about writing emus is that you don't have a lot of control over how the final producthas to work. For example if you are writing a game program and there is a certain part of thegame play that is giving you real big problems you can change how the game play is going to workto make things easier for yourself. You can't do this with emulators. The final product isalready defined you just have to constantly work towards it. This is why most emulators haveversion numbers under 1.0.

Well, it had been a long time since the last InterView, which was oneserver and one HD crash ago... Hopefully I will again have time to find people to InterViewand keep you all up to date on who's actually running the great show we're all attending.Thanks for reading and keep an eye on EV for yet more InterViews coming your way very soon...

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