This post can be seen as a follow up to my recent post ((My first impression of the Genius G540 universal programmer)) adressing the G540 universal programmer. The reason why I bought this programmer was that I have collected many old memory chips. I was always curious what kind of interesting data they might contain. A EPROM reader was needed and since my urge to build an Arduino shield for that purpose lapsed soon after sourcing some MCP23S17 ((Microchip product page of the MCP23S17)) SPI port expander chips.  So I bought the G540 I mentioned before.  Continue reading Reading Flash and EPROM chips and visualizing their contents →