Programming multiple devices at the same time with openocd?

Hello,

Currently I am building a gang programmer from IC sockets for 8 Atmel ARM devices. I will make a JTAG chain of the 8 devices. I will connect the olimex USB tiny or the olimex openocd to this connector. Is it possible to program all these devices at the same time or can I only program 1 device at the same time? Can you help me with the .cfg/script file(s) for multiple jtag devices? Any help is welcome.

Kind regards,

Mark