DIY 8-bit computer, Episode A: Arduino-based EEPROM programmer

In this video I discuss the design and implementation of an Arduino-based programmer for 28C64 and 28C256 EEPROMs. An EEPROM programmer allows you to burn firmware images created on your host PC to an EEPROM device.

The programmer supports page mode writes, and can program and verify a 32K EEPROM in about 30 seconds.

I realize that these videos are appearing at a slow pace, but I promise that I am still working on them!

[leonardochiruzzi]

This is exactly what I was looking for. Now I just have to do some tests with retrieved eeproms. The next topic interests me a lot. I really like this channel. For now, thank you very much.

[MarcellDAvis]

I am currently just in episode 8, but i want to thank you for the clear explaination that you provide during the video!

[OliNorwell]

Great video - you've got yourself a new subscriber. That enclosure is very impressive - it's motivated me to use the same method with the plexi glass and protoboard.

[jimmydrinks]

Thanks Dave. These vids are timely for me - just got an hd6309 free running on a breadboard & was wondering where to go next.

[fredimachadonet]

Awesome! I'm looking forward to watching the next video. Thanks!

[daveycrockett]

Great video which I would like to adapt for programming the old 27 series EPROMs. One general comment is that you go slower on hardware design that is new to you, but when you get to software you assume quite a lot of knowledge. I myself, have never written software for the PC so would like to understand writing, compiling and running software to talk to the Arduino.

[MikeKLH]

Thank you for sharing your work. Any chance you could provide a schematic on your GITHUB in PDF format, please?

Cheerful regards, Mike

[ElectronicFanArm]

There are some ROMs that permits writing packages of 64bytes until wait for X ms

[mikemarcu]

Would you, please, be able to provide the schematics and the software? Thanks.

[guntherschadow]

You didn't need the shift register for the data bits, much easier to just use the data I/O pins for those. The Ben Eater programmer just needs the two 74HC595. But your code is better.

[SteveJonespilot]

Did you write the EEPROM Programmer software? If so, I am curious why you decided to buffer the DATA lines, using 2 shift registers instead of just putting them to 8 IO lines on the Arduino.. If the software already existed, I get not reinventing the wheel, and making it compatible with someone else's code/hardware, but if you wrote it, it seems it would have been easier both in hardware and software..