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EPROM Emulator is a tool that can temporarily replace an EPROM memory chip inside your "target" device. You can plug it into your computer and "upload" a new version of code in seconds


Imagine you are developing software (well, firmware more likely) and you need to change the “program” in your EPROM memory. 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. 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. 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. Once you finish testing you can replace the emulator with an EPROM chip programmed with the final version of your code.

It's perfect for developing code for older 8-bit computers, Z80 "monitor" development etc. I even use it as a "universal" cartridge for my commodore 64.


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 (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 (Nov 18th 2020): uploaded new Gerbers version 1.8b

Jul 20,2020
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    • bobo from INDONESIA
      I'm ordinary staff, my hobby creating bulid audio amplifier and digital electronic stuff.
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