Eventually one of them asked me to help them set it up.
#Arduino eprom programmer how to
Just like the standard traffic light kits, but with four directions!People I know ask what would be a good project to learn how to code, I always said a traffic light.
#Arduino eprom programmer update
Update (Nov 18th 2020): uploaded new Gerbers version 1.8b
#Arduino eprom programmer serial
Update (Jan 10th 2021): uploaded new Gerbers version 1.9 (added pull up resistors to the EN_RST and WE signal to improve behavior when Arduino serial port opens)
Update (Jan 23rd 2021): uploaded new Gerbers for hardware version 2.1 (changed from two small SRAM to single larger SRAM, firmware and software is the same) Update (Apr 10 2021): uploaded new Gerbers for hardware version 2.2 (minor changes to the schematic and PCB, just part designators updated) I even use it as a "universal" cartridge for my commodore 64. It's perfect for developing code for older 8-bit computers, Z80 "monitor" development etc. Once you finish testing you can replace the emulator with an EPROM chip programmed with the final version of your code. This is where the EPROM emulator comes in handy, a device that can temporarily “replace” your EPROM chip, it is controlled by a computer and can be reprogrammed in seconds. The entire process is extremely slow and has to be repeated every time you want to make even a small one-bit change! And yes, there are modern EPROM alternatives based on Flash technology, that could save you the 20-30 min erase time, but the rest of the process is still the same and still annoyingly slow if you’re writing code and trying to “debug” it. That means, remove the EPROM from its host computer, subject it to 20-30min of UV light exposure, program it with EPROM programmer, re-install on the host computer. Imagine you are developing software (well, firmware more likely) and you need to change the “program” in your EPROM memory. You can plug it into your computer and "upload" a new version of code in seconds EPROM Emulator is a tool that can temporarily replace an EPROM memory chip inside your "target" device.
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