DSi RAM tracing

It seems like a lot of people have been seeing my Flickr photostream and wondering what I must be up to- especially after my photos got linked on hackaday and reddit. Well, I’ve been meaning to write a detailed blog post explaining it all- but I keep running out of time. So I guess a “short” blog post is better than nothing. The executive summary is that I’ve been working on making it possible to run homebrew games on the DSi.... Read More

Fun with FPGAs: SPI EEPROM emulator

I found a fun excuse to practice my digital logic design over the past few days: This is an FPGA emulating the SPI EEPROM (save game memory) in a modified Nintendo DS game cartridge. The emulated EEPROM is backed by 1 MB of SRAM, and there is a USB interface that you can use to simultaneously read or write the SRAM from a PC. You can use it to really quickly modify or inspect the contents of a game’s save memory- for example, for developing... Read More