pcrock
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Posts posted by pcrock
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Hi. I know that this is an old post but I have some information.
I own a Brazilian PAL-M console that uses the 6592 chip. The oscillator xtal frequency is 14.30244Mhz. It works great.
Today I received a piece IC marked 6591(92). I decided to try it in the circuit putting it in the place of original 6592 ic and all works great too. With colors working in PAL-M all ok.
I also tried on both IC (6591(92) and 6592) to use a NTSC xtal version (14.31818Mhz) but I got no colors!!! The games runs ok but only black and white screen is get.
PS--> 6591 and 6592 chip is an Atari 2600 all in one chip. It appears that it haves a very impressive compatibility with a real console that uses the 3 famous chips (6507 6532 6526) and It can run all games I tested but IT IS NOT COMPATIBLE with paddles (but is ok compatible with the Drive controller).
6591/6592 chips haves four pins that is not connected to circuit. I made a lot of tests with then but now I am sure. This chips IS DEFINITELY NOT COMPATIBLE with paddles.
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On 30/07/2019 at 16:52, SvOlli said:
Small additions.
Here's this pinout, as I could figure it out so far as ASCII art:
___ ___ A4 C : 1 -| V |- 48: C A3 A5 C : 2 -| |- 47: C A2 A6 C : 3 -| |- 46: C A1 A7 C : 4 -| |- 45: C A0 A8 C : 5 -| |- 44: A VCC A9 C : 6 -| |- 43: A GND DIFFICULTY P0 PB7 R : 7 -| |- 42: C A12 DIFFICULTY P1 PB6 R : 8 -| |- 41: C A11 GAME SELECT PB1 R : 9 -| |- 40: C A10 GAME RESET PB0 R :10 -| |- 39: C D0 P0 LEFT PA7 R :11 -| 6 |- 38: C D1 P0 RIGHT PA6 R :12 -| 5 |- 37: C D2 P0 DOWN PA5 R :13 -| 9 |- 36: C D3 P0 UP PA4 R :14 -| 1 |- 35: C D4 :15 -| |- 34: C D5 P1 LEFT PA3 R :16 -| |- 33: P1 RIGHT PA2 R :17 -| |- 32: C D6 P1 DOWN PA1 R :18 -| |- 31: C D7 P1 UP PA0 R :19 -| |- 30: A GND AUDIO T :20 -| |- 29: T VIDEO CHROMA :21 -| |- 28: A VCC P0 FIRE INPT4 T :22 -| |- 27: T VIDEO LUMA P1 FIRE INPT5 T :23 -| |- 26: C /RESET :24 -|_______|- 25: T CLKThe external functions are added, and the IDs should explain themselves. The single letter is the component which typically drives this pin. [C]PU, [R]IOT, [T]IA, [A]LL (for power).
Another thing that I forget in the last post was that I've encountered three different numbers for 2600 SoCs so far.
6591, 6592 and 8591. My guess is that 6591 and 6592 generate different TV signals. And my guess is that the 6591 is done in NMOS technology while the 8591 is done in HMOS(2). This would resemble the rest if the MOS numbering scheme: 6581 is the SID in NMOS, while the 8580 is the one in HMOS(2). Some for the CPU 65xx vs 85xx, but the lower numbers don't have to match, as the 8500 has the same pinout as the 6510.
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Is possible to replace MC68000 using directly a MC68010 one????
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Hi friend. I am looking for the schematics or the service manual for this coleco console compatible with Atari 2600. Do you have it to send me??? Thanks
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Hi friends.Please. I would like to know if anyone has the schematics diagram or service manual for the Coleco Gemini Video Game System console (Atari 2600 Clone). I am needing this schematics. I couldn't find it on the internet. Thank you very much friends -
On 12/22/2022 at 10:19 AM, Zak said:
Here is the great job (NOT TESTED YET) made by Brazilian friend Marco F. Costa.
That's is an array to became able to use a NTSC ATARI TIA (CO10444D or 6526N or KSC131 and others) to replace the very hard to find Coleco Gemini E4002 TIA.
I used the E4002 datasheet pinouts to check several times the schematics made by our friend Marco and compare with CO10444D datasheet.
All about circuit looks very good to me. I did not find any error but you must to keep on mind that nothing here were actually tested yet.
Special thanks for the friend Marco F. Costa from Brazil by his efforts on drawing the schematics.
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Hi friends.Please. I would like to know if anyone has the schematics diagram or service manual for the Coleco Gemini Video Game System console (Atari 2600 Clone). I couldn't find it on the internet. Thank you very much friends. -
On 12/22/2022 at 10:19 AM, Zak said:
Today I did this Pinout converter plan.
Please keep on mind that I haven't tested it yet!!!
If you plain to test it, please tell us the results.
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As I said, that was done by a friend of mine.
I asked for the PCB files and if I get them I will share here for sure.
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On 11/18/2022 at 7:59 AM, Fabrice Labrousse said:
Did Anyone tried an adaptator to change the Coloco VIC to an ATARI TIA ?
A friend of mine did it.
He made a small PC board to do it.
Now he uses 6526N ou KSC131 tô replace the hard to find ic E4002
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A friend os mine, here in Brazil, made a small PC board adapter to use an ATARI TIA 6526N to replace Gemini E4002 IC.
It Works perfect!
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On 9/3/2022 at 8:06 AM, chavert said:
Hi friend.
Thanks for replying.
Very Very thanks for your great helpping!!!!
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Hi friends. I Would like to know please if exist a software to convert PAL roms in NTSC ones.
There are some games that I can´t find in NTSC version.
I Attached here one of the games I would like to convert.
Thanks friends
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On 3/20/2022 at 11:52 PM, spadovan said:
eu fiz um hack do logo no jogo beamrider para você.
i made a logo hack in beamrider game for you.
Estou anexando mais jogos de um cartucho de 16 jogos que o alex_79 me ajudou a fazer o dump.
I'm attaching more games from a 16 game cartridge that Alex_79 helped me dump.
Beamrider - Mania - UA.bin 8 kB · 14 downloads 16 jogos bank UA.zip 90.93 kB · 15 downloads
Já fiz o cartucho e já estou usando!!! Ficou perfeito! Não tenho palavras pra agradecer!!! Você é Brasileiro??
I just burned an EPROM and it works great!!!! I have no words to thank you!
Are you Brazilian?
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On 3/20/2022 at 11:52 PM, spadovan said:
eu fiz um hack do logo no jogo beamrider para você.
i made a logo hack in beamrider game for you.
Estou anexando mais jogos de um cartucho de 16 jogos que o alex_79 me ajudou a fazer o dump.
I'm attaching more games from a 16 game cartridge that Alex_79 helped me dump.
Beamrider - Mania - UA.bin 8 kB · 2 downloads 16 jogos bank UA.zip 90.93 kB · 3 downloads
Wooooow Very very very cool !!!
I will burn an eprom just now and play it with my Kids!!!!
Very very Thanks!!!!!!!!
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4 hours ago, Al_Nafuur said:
Found the IC on ebay Germany. But I don't know if the ship to Brazil..
https://www.ebay.de/itm/151010204380
Thank for replying my friend. I have interest on its datasheet due the original ic is very hard to get living in Brazil.
The bud Batari told me that he believes TB759933 can be replaced with 74LS00.
Once more thanks again!
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Hi friends. A friend of mine asked me for some help about an integrated circuit that I never seen before TB759933 from Texas instruments. I think it is a part of the Bankswitch array. May some friend to send me the datasheet about it? I also would like please if someone could tell me another IC that could be a substitute for it.
Special thanks from Brazil.
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What is the error you got???
I tried to program some AM2732B using my willem programmer and all works fine.
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On 8/24/2020 at 8:50 PM, Shawn said:
Willem programmers are the bottom of the barrel but they do work for what they are. For only a couple bucks more you can get a TL866 as mentioned a couple times in this thread. The TL866 and any of it's variants\successors are far superior to those entry level Willem PCB only programmers.
TL866II WILL NOT program 2732 chips and will NOT program 2716 chips commonly used for Atari 2600 (2k or 4k games). That programmer not reaches 21v (and above) vpp voltage required by this eproms.
Willem is better to do that in this case.
Willem do the job.
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THE GAMES INSIDE THE ROMS I PLACED ABOVE IS:
E.TPress Cooker
Robot Tank
Pigs in Space (ALL BY RENTACON)
H.E.R.O. (By Rentacon)
Pole Position (By Rentacon)
Moon Patrol (By Rentacon)
Beam Raider (By JVP) -
On 9/16/2020 at 6:40 PM, Pilot99 said:
Hello my friend, I need games with the same bankswitch of this cartridge, have you done a dump? know where I can find 8k games with the same bankswitch?
Sorry for the delay. Covid-19 time it is been a hard days and hard night here.
I dumped my two carts today an sent zip files here.Please note that this is a weird strange cart.
It uses a kind of special 16K chip that fits a 32K data content.
So I did two types of reading. Firstly I did a read as a 27128 chip and after I did a read as 27256 chip. Please Keep in mind that the actual chip is a NMC27CP128Q. I sent attached all the data I got. I placed some pics from the board too.
Hope be useful for you.
Once more sorry for the delay on dumping the files...
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SORRY FOR REBIRTH AN OLD POST BUT I do Have a BIT 7000 console in its original Box with papers... It is an Atari 2600 clone with a kind of nes style.
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On 4/15/2014 at 9:15 AM, Marcus Vinicius Garrett Chiado said:
Sou o autor dos livros "1983: O Ano dos Videogames no Brasil" e "1984: A Febre dos Videogames Continua".
Cara! Eu comprei teus livros!!! Foi a coisa mais deliciosa do mundo lê-los!!!!!! Tem mais alguma coisa??
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I think the arrows are pointing clockwise.
When the lowest resistance is reached, full clockwise is also achieved.
But this is not a problem.
Testing is very easy.
If not, just invert the wire to the other contact of the potentiometer.
Remembering that the center (cursor) does not change.
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6591: The Atari 2600 System-on-a-Chip
in Atari 2600
Posted
That Is exactly what I said.
But since exists 4 not connected pins in that IC, I did some tests with it to be sure that those pins could (or not) to be the paddle pins.
In Brazil there exist some Atari 2600 clones (by Milmar) that not supports paddles but only the connexion is needed. The circuit is already there! You just need to add 4 wires.