A system and method for providing seamless communication with threads executing on an embedded computer. Using a DAT system, a programmer can test the communication interfaces of a thread via either a scripting program, any COM-compliant program, or a graphical test utility. The DAT system automatically formats a block of data that is transmitted between the embedded computer and a host computer and accounts for machine specific enumeration sizes, machine specific pointer sizes, machine specific structure alignment boundaries, machine specific integer sizes, and machine specific byte ordering.