Abstract: A still video frame store memory includes four banks of random access memory storing two-byte words, the luminance data being stored in the high bytes of all banks and two chrominance difference signals being stored in the low bytes of two of the banks. The low bytes of the remaining two banks store compressed image data corresponding to the uncompressed image data stored in the other portion of the memory. Highly efficient indirect addressing is facilitated using an address word in which the two least significant bits specify a particular one of the four memory banks and another one of the least significant bits specifies either the high or low byte.