Multimedia from a source can be wirelessly transmitted in an infrared system to a display. To support rapid reads of data written into a slave at the display by a master at the source in accordance with I.sup.2C protocol, a master simulator on the display side continually polls the slave for changes, and maintains a shadow memory in a slave simulator at the source side current, so that reads from the master may be immediately executed from the shadow memory in the slave simulator without transmitting the wireless link.