[avrdude-dev] usb-iss support

[Per Dalgas Jakobsen]

Hi

I've pruchased a Devantech USB-ISS multi-protocol USB-module, and I 
would like to add it to the avrdude. Plugging the module into the 
USB-port automatically creates a serial port, through which the device 
can be accessed.

I plan to use the virtual serial port to communicate with the programmer.

The module just needs to be initialized for SPI, after which each 
SPI-command is prefixed with a SPI-command-byte (a constant).

The stk500 seem too "advanced" to be used as starting point for this 
simple device.
Which module would be the best starting point for this device?

~Per