#HOMEMADE EEPROM PROGRAMMER HOW TO#
#HOMEMADE EEPROM PROGRAMMER SOFTWARE#

This way, the bottom of the socket has enough room to fit correctly in place.Р”РЋ4. If you are using a 40 pin socket like me, you may need to move the electrolytic capacitor in the middle right hand side of the board over a touch.Р”РЋ3. This way, the top of the socket has room to fit correctly in place.Р”РЋ2. You may need to bend the ceramic capacitor in the top left hand corner to the left.Р”РЋ1. Here you can see the 40 pin socket with the 12 legs removed.Р”РЋ0. You will need to cut off the bottom six legs of each side if you are using a 40 pin socket like me.Р”В©. Here you can see the front of the board with the missing chip.Р”РЃ. Perhaps you feel more comfortable with desoldering braid.Р”В§.

sometimes a point must be worked on more than once before enough solder is removed). I usually use a vaccum solder pump for this sort of thing, because it is quite quick but it is not always 100% reliable (ie. There should also be a ceramic capacitor in the top left and an electrolytic capacitor on the right side of the board.Р”В¦. Check that the board only has one chip on it, and that that chip is a 28 pin, wide body chip. Inside you will find the cartridge circuit board.Р”Тђ. Remove the two screws on the back of the cartridge. So, I used a 40 pin wide body socket instead.Р”В¤. However, I did not have any handy at the time and my local electronics shop had run out of stock. You will need a 28 pin, wide body socket. This tutorial should work with many other games as well.Р”Р€. I have found the correct chip size and printed circuit board in AUS PAL versions of The Ninja, World Grand Prix and F-16 Fighter, all of which are fairly common. The printed circuit board that I have used so far is the model 171-5519. This chip should be a wide-body chip with 28 pins. In particular, we are looking for a cartridge with a single chip on the board. You will need a Sega Master System cartridge.

#HOMEMADE EEPROM PROGRAMMER SOFTWARE#

This should be documented within the programming software that came with your programmer or with any relevant printed documentation.Р”Сћ. If you are using your own EPROM programmer, ensure that the programmer is able to write to both the EPROM model and manufacturer type. In this tutorial, I use an ST Microelectronics 27C256B chip.

Maxim's webpage is an excellent resource for all things that are related to the Sega Master System, and I would like to thank him for the amount of effort and time he has put into creating it.Р”Р„fter the step-by-step section, there is a pinout for the cartridge PCB.Р”РЋ. This tutorial would not have been possible without the Sega Master System cartridge port connector pinouts as found one Maxim's page. The good news is that the cartridges use a re-programmable EPROM, provided that you have the appropriate facilities (EPROM programmer and EPROM eraser). These carts have been tested on a PAL SMS 1 and a PAL SMS 2. The cost is quite low (if you have a programmed EPROM or you are able to program your own) - I payed around AU$8 in parts for one of my carts as made in this tutorial.

#HOMEMADE EEPROM PROGRAMMER HOW TO#

This tutorial is a step-by-step guide on how to make your very own 32KB Sega Master System cartridge.

Homemade eeprom programmer