cetics

In this video (52:12) the owner of the channel shows a similar board working.

Fotos e DIP.zip Here are the photos of the board I made at the time and an attempt to redraw the board in dip trace (with source file). It may be necessary to check as I may have made some mistake (no tests)

Thanks for the answers. I think I still have the cartridge in my collection, but it never worked, so I was afraid to invest and ask for a PCB to be manufactured in China. Because I wasn't sure if the dumps were good. I found a similar board (working) on the Brazilian market a while ago and thought I'd buy it to see what was wrong with mine, and try to export the working schematic. But the price they asked was simply impossible to pay back then. Today I looked and couldn't find it anymore. I'm thinking of redesigning the board and ordering a PCB in China for testing.

Thanks for the tip

The first lot arrived in my hands with the approximate price of 57 Reais (in today's quotation it should be approximately 10.97 dollars) I intend to ask in Brazil the price of 70 Reais (approximately 13.47 dollars). But we are studying the market about the interest, in Brazil this price is quite expensive for people. This price is only the PCB (we don't have the other parts here), it would be like a replacement, I would take it from an atari with a bad board and put it on the new one)

Hi, thanks for the tips. I didn't find the option to change the topic title. I'm not sure I got it right, but the AV option is on the board and also the RF. I'll put some photos. The AV mod on the board is authored by Victor Trucco. (I put a potentiometer, as I didn't have a trimpot available at the time of assembly). I need to fix a few things in the silkscreen printing on the plate

In the future, my team is considering selling these cards (shown at the end of the video) if they find market acceptance. It is used to restore the Ataris 2600 (It was inspired by the Polyvox version as they are fragile and spoil easily with all these years). The initial small batch is currently sold out. What do you think of this project? Unfortunately we won't have gerber for this project, as the team intends to sell the boards (only in Brazil). Sorry for my English, it was made with the Google translator. What colors do you think would look good for the boards? Thanks for your opinions.

AFS ROM Suite MD - New program for working with EPROM/FLASH and others. Works on Windows. This is a complete suite of functions for Sega Genesis/32X/Mega Drive. Although it was designed for this specific system, the program has several functions that can be used on other video game systems or anything that uses Eprom/Flashs and so on. The program is very useful as several functions can be run in batch to act on several files together. Among the main functions are: 1 - Correct Checksum for Sega Genesis and Master System. 2 - ROM information reader and editor (Sega Genesis). 3 - Byte swapping (for recording 16bit style eproms used in Sega Genesis). 4 - Complete ROMs (or any file) leaving this with the chosen size. 5 - Combine ROMs to make a large file that can be used with cartridges that change the game with RESET. 6 - Join HI and LO files (odd and even bytes). 7 - Split large files into smaller parts (to split files taken from multi-game cartridges). 8 - Divides ROMs into HI and LO (odd and even bytes, for recording in 8bit memories). 9 - Extracts part of files, choosing a start byte and the size of the part. 10 - Smart file splitting (this function can find Sega Genesis ROM files inside any file (as long as the ROMs are in standard format). 11 - Compare files byte by byte. (If you have similar ROMs you can compare them. them to know the difference between them, this is useful to know what has been modified in hacked ROMs) 12 - You can change via software the order/position of data pins and addresses for 16bit and 8bit memories (this makes it easier to reposition the tracks when making a PCB board. The program comes with 3 languages (English-Português-Espanhol) The program help is also in these 3 languages. (The language comes in INI format, it can be edited to other languages) I want to inform you that I have already detected small BUGs that will be fixed in a future version. They are: 1: On Windows10 it may be necessary to click on the list fields before (so that it has the focus) and then drag the files to the lists) 2: In one of the functions I forgot to link the progress bar operation. But that doesn't affect the function's functioning. Thanks to everyone who has tested it, I hope it will be of great use. Here is the download link: https://www.romhacking.net/utilities/1621/ Here is a video teaching how to use (unfortunately only in Portuguese): https://youtu.be/YycxlA6vGlc

Super CIC for PIC12F683 and PIC12F675. I made a new build. This time for the PIC 12F683. In the 12F675 version some people said they had problems having to reset to work in some games. with the new version "12F683" they said it has been fixed and tested on Japanese SNES and baby version. I also want to report that you should be careful, posi some friends of mine said they bought PICs from china and these chips were remarked with wrong codes and names. Here is the download link for both versions: AFS_SUPERCIC 12F683_12F675.zip

Desculpe a demora em responder. Eu não tenho o esquema. Eu fui olhando para a placa e desenhando. Fiz diretamente o desenho no Diptrace, sem fazer o esquema antes. Sorry for the delay in responding. I don't have the schema. I was looking at the board and drawing. I made the drawing directly in Diptrace, without doing the schematic first.

I hadn't found the file for the supercic to work on a PIC 12F675 on the internet. So I had to convert the code. It was a little difficult to be in assembly, but thank God in the end it worked. Now anyone who doesn't have a 629 PIC will be able to make it work on a 675. On my consoles they worked instantly, but someone reported that they had to press RESET to work. So you need someone who has different SNES consoles to do more tests. Now it is a little easier to make homebrew games. I thank anyone who can test. Supercic for 12F675.zip

I also realized that the example I used to make the base of the cartridge had some errors, the contacts on the cartridge were interconnected. now it has been corrected in my drawing. atached gerbers 1.2 gerbers1.2.zip

I went to change my design to put some switchs and I realized that I had forgotten to connect the 5v in the logic circuits. Here are the new gerbers.

I'm out of materials to manufacture a board at home, but as soon as possible, I'll order one from JLCPCB. Thanks for drawing. In my drawing I tried to represent it as close as possible to the original in order to get the best scheme. But you improved the scheme, congratulations.

Are you referring to this weld shown on the arrow? This solder did not exist previously. I cut the trail for a test, and then I fixed it. Pin 14 of the 74ls00 is connected to the VCC. In my drawing it didn't show because I was still completing it. From the information I have, the 27128 would have 16K. Pin 26 would be the highest address (A13), and its change between VCC and GND would change the two halves of eprom (for the two 8k games). Parker bros sistens should divide the rom into 8 slices of 1K according to this document:(http://www94.pair.com/jsoper/2600_pb_bs.html) As for pin 12, it appears to me as D2.

Here is the complete board (gerber) I think I managed to copy correctly. If you have any questions compare with the images or ask that I check here. gerbers.zip

I'm redrawing the card. this is the back side (if I haven't done anything wrong). after finishing everything I will go up the gerbers

As far as I can understand they look like this: The diodes were a bit faded, but it looks like the list was down and looked like 1N4148. DESENHORESCAPDIO.bmp

I'll try to copy here where the components are. I can't dismantle the board again because every time I do that, some tracks and pads go away.

I lifted the eprom pin 22 (OE) off the board, and plugged it into an external 74ls00 to see if it worked, but it didn't work

Liguei o resistor, mas se efeito (nada no gnd ou no vcc) o pino 6 do 74ls00 está conectado ao 22 do eprom. Liguei o cartucho e durante a operação o pino 6 do 74ls00 sobe para 1 volt e permanece assim. (ponta preta do multímetro em GND e ponta vermelha no pino 6 dos 74ls00. I don't have a cartridge box, I received the card like that and with the wires loose.

All capacitors are: (102). I had connected the orange wire directly to the VCC (without result) ... then I connected directly to the GND (also without result). I will try with the resistor. I replaced the 74LS00 with a new one (with no result). The 74ls133 I have no others to exchange. But my eprom recorder tests circuits and shows everyone how good. I also remade the welds and tracks and cleaned the contacts. (no result yet). Thank you for the tips.

My monstrous connections for atari 2600 (repro boards). I know the easiest ways to do this job, but I have to work with what I have at hand. These children have just been born. Atari F8 and atari 4k PLCC32.

I keep building the project. For now it reads megadrive and atari cartridges (4k and F8 common). In the future I intend to record flash cartridges too. Soon I will put more atari dumps here.

I borrowed this card to try to fix it. (always with black screen). I remade all welds and tracks, tested the circuits with my logic circuit tester (TOP3000) and they were all shown to be good. But the sign keeps giving black screen. I checked eprom 27128 (which came without a protective sticker) and read its contents (in the attached file) Analyzing the hex files it seemed to be two games (popeye and montezuma). But through my file analyzer realize that the files were different from the roms downloaded from the net for the same games (few bytes were different). The games copied from eprom (and divided into 2) did not work on the stella emulator even though choosing the parker bros bank. It seemed to me that the files were corrupted by the exposure of the eprom. I recorded a new eprom with ROMs (Parker bros 8k) from the internet but the card still doesn't work. Is this a different card? or is it a parker bros with original layout and am i missing something here? * The card came with loose wires and as they were connected to the highest address of the eprom I thought they were for the game exchange key, but it had no effect when placing it. Could anyone check the position of the diodes? I received the plate I don't know if anyone tried to repair the plate before ... the two diodes came with the mark down. Following is a file with the ROMs and more pictures of the circuits removed. Board circuits: 74LS173 x3 74LS00 x1 Diodes x2 Ceramic capacitors x3 Resistors x3 Original Eprom: 27128 Intel Thanks to everyone and thanks to "ODIN Games" for providing me with the test board. Parker bros.zip