Prog Rock is a rock programmer that implants artificial memories in silicon wafers. Specifically, it burns binary ROM images into 28C64 EEPROMs.
The tool consists of an Arduino sketch that defines the peripheral side of an EEPROM programmer as well as a Python command-line tool to upload and download ROM images via the Arduino peripheral.
The Arduino program provides a serial interface to a host computer and handles the hardware side of programming the 28C64 EEPROM. It parses serial commands to put in in reading or writing mode, and then either reads the requested byte range from the EEPROM or writes the specified image file to the EEPROM at a given offset.
Install the Python command line utility:
python setup.py install
Instructions for programming the Arduino and building the circuit can be found in the documentation.
progrock [-h] [--tty TTY] [--baud BAUD] --start START [--image IMAGE] [--len LEN] [-C]
The progrock command line utility takes options for a serial interface, a
start address in the EEPROM, and either a ROM image to upload or a length of
bytes to read.
The -C flag displays the data read from the EEPROM in sixteen space-separated
columns of hexadecimal values.
The --image flag accepts a path to a binary file that will be uploaded to the
EEPROM in its entirety.
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The Arduino bootloader will soft reset the microcontroller to allow a new program to be loaded if it detects activity on the USB serial connection. The Python client waits two seconds after connecting to ensure the peripheral code is running.
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It's important to assert Output Enable on the EEPROM after writing to disable write mode. Otherwise, resetting the Arduino will bring Write Enable low, which will write whatever is asserted on the data pins to the last address shifted onto the address bus.