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About eluccas

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    Space Invader
  • Birthday 10/11/1971

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    Atari 2600, Apple II and vg and cpus for the same age
  1. eluccas

    Polyvox - Mr. Chin

    No. Polyvox "Mr. Chin" is the "Dancing Plate" game, from Bit Corp. "Dancing Plate" is originally released in Brazil by CCE, with other 8 games from Bit Corp (like Mr. Postman, Boby Is Going Home). This two game, in fact, were very popular here. I don't know why Polyvox released this carts, and others (like Popeye, Frogger, Space Tunnel etc), using Activision cases ! Maybe, I think, because the competition with others small companies that make lots of others games from others companies (Polyvox had only license to release Atari games).
  2. Yes, this appears to be a 2600 version of Turbo. Maybe is true. In 80's here in Brazil, the Dynacom company (the same company that release the portable 2600 called Megaboy) announced this game in your catalog. But I never see one im my hands. []'s Eduardo Luccas Sao Paulo - Brazil
  3. Well, just one question: If I get this 4Kb ROM, burn an EPROM and build a cart, will it works, on a real 2600 ?
  4. Ae xará, Meus parabéns !!! Desejo sucesso e que outros jogos venham por ai !!! Congratulations and Success !!! []'s Eduardo Luccas
  5. quote: Originally posted by Chuck Gill: Eduardo, Thanks for dumping the game, I doubt many of us would have ever seen the game any other way. Are all games from Brazil NTSC like this one? -Chuck Hi !!! Yes, all games are in "NTSC format" Look, Brazil uses PAL-M system. But brazilian PAL-M is NOT equal to european PAL-x PAL-M is very similiar to NTSC: 60 Hz frequency, 525 resolution lines. The differences are in color frequency (NTSC uses 3,579545 MHz, PAL-M uses 3,575611 MHz) and have an "alternace lines", like others PALs. PAL-M was developed to solve the color problem in NTSC when trasmited by air. All games released here are NTSC. In the brazilian consoles have a little circuit to convert Stella signals to PAL-M. (a 74LS74 chip, a transistor plus some resistors) The Stella chip used in Brazilian Ataris is the SAME are used in USA consoles. Polyvox, and others companies to release Atari 2600 clones, have developed this circuit. Then, brazilian PAL-M is more similiar to NTSC than the european PALs. Regards,
  6. Hi people !!! Some commentars: Pizza Chef is a bit rare here, in Brazil, but no much. This cart is released in lasts "series" of cartdriges from CCE. Unfortunately the label, in the cart that I used to dump, is very very bad. I try to find a good label. But label of this cart is equal to some labels; CCE released one carts series with a "standard" label, changing only the name of the game. We really don't know how CCE get some games; not only CCE, others companys get games that not released in USA. Donald Duck's SpeedBoat is an example; I have one brazilian cart with this game. Now I try to get a Pizza Chef manual; when in my hands I will scan and distribute to all. I hope all people enjoy the game.
  7. quote: Originally posted by osbo: Hi you guys! makewav it's all right, now I have a question, I found all the arcadia games, but most of them are 8k bin files, and the arcadia only have 6k of ram, how can I load the games into the supercharger? any ideas? Thanks a lot! OsBo Hi ! In 80's a small company called "Canal 3" was released, here in Brazil, a Supercharger clone, was called "Canal 3 Supercharger". This device is very similar with the "original" Supercharger from Starpath, but we have reported that Canal 3 sold K-7 tapes with 8K games, like Ms. Pac-Man, Zaxxon, Centipede and Vanguard. Unfortunately I have no one for analyze the circuit but I think that Canal 3 make some modification on the hardware.
  8. eluccas

    4k EPROM Cart

    quote: Originally posted by khryssun: I plan to build an EPROM 4k cart. I don't want to build a multicart such as Bob Colbert's one with dipswitches. For my first attempt I'd like to work on a very elementary circuit. ... I wondering about on thing : Is it possible to replace the 2732 EPROM with an EEPROM ? Thanks Hi !!! Yes, is perfectly possible, and is not much difficult. Take the cartdrige slot pinout. The pinout is exactly the pinout of a 2732 EPROM, except by the chip select line, this is need to inverted. So, follow pin-to-pin connections between cartdrige slot and EPROM, except for A12. Take A12 line and use 1 74LS04 gate to invert this line and connect to pin 18 of 2732 (/CE). Your cart is ready !!! Of course you need to burn the EPROM with a game program. And you need to build a PCB with a 24 pin edge connector to plug in 2600. I hope this helps.
  9. quote: Originally posted by Mitch: I tried looking the part up and the closest match I can find is for Atari part number CO10174. It is a 14 pin linear IC LM3086, you should be able to pick one up at a well stocked electronics store. If you don't have one close to you the Atari dealer ... I hope this helps. Mitch Hi !!! Thank you very much !!! I will find this chip to buy and I will try to replace in 2800. Thanks again for help.
  10. quote: Originally posted by Eduardo: I just checked in the World TV Standards page, and Brazil is listed as PAL-M, what is more confusing is that some video hardware made in brazil that is being sold in Latinamerica is NTSC and I'm sure a couple of persons from BZ I met on the net a while ago mentioned they were using NTSC stuff too (maybe not all Brazil uses PAL hardware in order to watch TV stations from other adjacent countries or being able to use NTSC stuff that sells cheap over there). Hi !!! Well, the PAL system used in Brazil, the PAL-M, different of the Euroepan PAL's, is very very similar to NTSC. Brazilian's PAL-M uses 525 resolution lines, 60 Hz frequency, like NTSC. Basically, the differences are the croma oscilator (NTSC is 3,579545 MHz and PAL-M is 3.575611 MHz) and the PAL is "alternate lines"; every scanline the signal is inverted en 180 degress. The intention of PAL-M is "correct" the NTSC color problems. Due to this similarity PAL-M <-> NTSC conversion is easy. The 2600's from Polyvox uses the same PCBs from original 2600, with the little board that provides de necessary signal phases conversion and the oscilator cristal is changed. The 3 chips, TIA included, is the same as the original model. quote: Anyway that 2800 is NTSC, question is: Luccas is your friend's TV PAL or NTSC? if PAL then Iandefor was right. As for the DVD analogy with lockout circuits I still doubt it. The TV used to test have both systems, PAL-M and NTSC. Of course, I adjust TV in NTSC mode. If you conect an Atari 2600, or other equipment, that use NTSC in a PAL-M TV the image will appear perfectly, except for the colors: the image show in B&W. Because this I think the problem is not the color format. Thanks for the help !!!
  11. quote: Originally posted by Iandefor: I think I may be able to fix it if you forgot that atari 2800 is a japanese system. If you are using an american television, I beleive ... y shit on the screen. Get it? If you don't, I'll explain the analogy for you. The atari represents the 2800. The dvd player represents the tv. Now do you get it? If you still don't I'd diagnose your atari 2800's problem is it's owner is a dipshit. ... Hi !!! Yes, I understand, thanks. But I think this is not the problem. As far as I know Atari 2800 uses NTSC color system, the same used in USA and others countries. Then I hope the 2800 work in any NTSC television. Is this correct, no ??? BTW, Atari's circuit is simple, old and did not have tecnology to "block" RF signal according TV type that the system is conected. Right ??? But, TKS for help.
  12. [QB]@ Eduardo Ludday You mean really a 2800 the japenese version of the 2600? Thats cool, I wish I had such a thing. I have many japanese games for the Nintendo consoles and some for Sega consoles. But no for the Atari. Yes, it is the japanese version of Atari 2800 This is an interesting machine, it's look like an Atari 7800 (the case is the same) and the all switches are not mechanical, all difficulty, color-B&W are a "digital". Unfortunately this Atari is my friend's console... :-(( The right link must call: ... I hope that will help you. ... Thanks for information.
  13. ... [QB]Hello Luccas: If you were able to pinpoint a defective circuit, maybe you're able to perform the composite video mod, the video signals that are sent into the RF box are in composite format (chroma, luma, sync, audio). I think that's the only way to save your 7800. ... Hi ! Thanks for help. Composite mod is a good option but the console is not mine, it's my friend's console, and he want to get "original" RF output, he not want to do any modifications. Because this I'm try to find what is the C10174 chip in the RF modulator box. BTW I live in Mexico. Is nice to see that many ppl in Latinamerica are getting into the Atari hobbie. Thanks, I will write to you !!!
  14. Hi! I have one Atari 2800 and it have a problem: don't display correctly image. I have dissasembled and I think the problem is in the RF modulador. Opening the modulator box, I found one chip that I think is defective. However, I don't know what this chip is. It have an Atari code: 10174. Anyone knows what this chip is ? and does exist some equivalent ? Thanks.
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