It would be possible to program the "pirate bus" to simulate the operation of certain chip I2C or SPI?
That would be interesting when we need to work with any chip, but do not have at the moment!
That's a very interesting idea for a project, but I don;t think the Bus pirate with it's current firmware could do something like that...
Probably a best idea for something like that would be the BP demoboard we are designing, it designed to use one pic that emulates 4 different devices on 3(or 4) differen't protocols....MEM/PWM generator/ADC/DAC over SPI/I2C/UART
I've long been interested in a chip emulator. You'd meed some clever PC software to design the registers and replies. It's a pretty niche project though.
Component manufacturers could perhaps help you since that would be a bridge to the designers adopt in their circuitry components manufactured by them.
http://www.maxim-ic.com/ (http://www.maxim-ic.com/)