Program snes eprom

I started in the world of microcontrollers with a Arduino UNO. There is a huge community and a lot of content about Arduino, so it is easy to understand everything. You can programm them with a simple click of a button. Good luck! If you are interest, i can send you my version. I would like to read program from Eprom 27c and you have already developed this programer if you can share it to me on my email address.

Maybe in a month I will have all the materials and then hopefully everything working. Cheers, Miguel :. Hi Miguel. Sorry for the late reply. Feel free to ask anything about the project here when you have everything. Hi, I just came across this post, very cool stuff! Should I change the schematic or just write another pinout definitions in the arduino sketch in order to get it to work? Hello Max. Have you had a look at the other repository? I believe your chip should have the same pinout.

I will look into it and will let you know when I make progress. Unfortunately, I only have the hand-drawn pic you see above. I even thought about it, but then I would have to make the ZIF socket component and create pinouts and zzzzzzzzzzz hahaha. Can you provide some pictures or diagrams for wiring up the transistors to the vpp and the bottom picture of the board? Hello Ben. The links are fixed now. Sorry about that. I cant remember what was it now, but I guess pin five should be pin 4 Arduino.

Not sure tough, please check in the code hehe. Any question, just write them here. I was also wondering about wiring the dc converter to which pin, as well as the voltage regulator to whatever pin on the chip to the arduino board.

This may be much to ask i think. Hi Ben Connect the dc-dc converter to 5V and adjust it to 13V. Then from these 13V, you input to the lm, so it can be dropped down to 6V. The 13V are connected to the chip only through the transistors. This voltage is used to program bytes in the addres given to the chip. But when trying to write the python script always craps out here: while ser.

Any clue why this would fail or how to start troubleshooting it? Hi Sven, thanks! We gonna work it out It seems to teensy is not returning the checksum. This way it is possible to check if there was a problem when writing Can you see if the teensy is returning anything at all, even if wrong values? Thanks for getting back to me so quick. But let me know if you have any ideas, too.

I will have a look at this text you sent me when I free to see if I can come up with any fix. Did you get the cartridge working when you used the UNO? Would like to read more about this. Apparently, the teensy accumulates data to make good use of a usb packet that can be many bytes.

Or you can try to perhaps increase the timeout in the python code. Will need to study the examples they have on the Teensy website for dealing with the receive buffer. Hi Sven Intriguing, I thought that wold work. Anyway, I am glad you got the cartridge working. I guess you are trying to make it work with the teensy as a matter of pride hahaha. Haha, correct! Oh well…. I will try it on a test board and snd you the photo if some thing want wrong I wish you will help me.

I do not have much idea of programming but I want to recover some PCV and this programmer loved it. Please install the suitable Pyserial version your Python installation. Hello to all. I managed to build the programer, install all the programs and run the burning proces. Is this normal? Hello Jakub. That is very unusual. It takes me some minutes to burn a 1MB eprom.

Do you get any messages when running the code? I believe your setup must be dropping bytes, please try to lower the baud rate and seeing if that makes it more reliable. Current procentage: But only found KB or less chips to buy and they are far from cheap. They were often used and BIOS chips. Thanks for the reply. I see. They would probably be even cheaper for you somewhere else. On the SST site there cents at qty 4k.

I pay a dollar or two each with free shipping. DIP only goes to around 4Mb. I have enough eproms for swaping my donors if I wanted. Some people use SMD adapters for 29F Also I have seen 16 bit memories on cartridges, but there is some workaround to multiplex the 16bit bus to 8bit.

Thanks for the info :. Anyhow, I got to the bottom of it. You know, thinking back, someone had that same problem like a year ago haha Well at least it was an easy fix! Make sure you have the 40 pins in the 42 pin socket such that pins 1 and 42 on the socket are empty.

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Como faco para dividir as roms Like Like. Hey there, when you load the chunks into Xgpro, is it normal for the bytes to be reversed? Can you take a screenshot of the entire xgpro window? WordPress be weird! Really frustrating, but glad I got to the bottom of it, and can move on with my project!

An easy issue to fix, yes, but many hours chasing ghosts trying to find it! Make sure you have the 40 pins in the 42 pin socket such that pins 1 and 42 on the socket are empty Like Like. Thanks, it worked now Like Like.