Video display system storing unpacked video data in packed format

A video display system for processing unpacked input video information, said unpacked input video information comprising video data and corresponding non-sequential input video addresses, said display system comprising in combination:

• a first memory having a data port and an address port, said data port receiving said video data;
• memory mapping means for translating said non-sequential input video addresses to sequential write video addresses;
• read address means for generating read addresses;
• switch means for directing said write video addresses to said address port of said first memory when said switch means is in a first state, and for directing said read addresses to said address port of said first memory when said switch means is in a second state;
• such that said video data is stored in said first memory in packed format when said switch means is in said first state, and said video data is read from said first memory when said switch means is in said second state;
• a second memory having a data port and an address port, said data port of said second memory receiving said video data;
• and
• wherein said switch means further comprises means for directing said non-sequential input video addresses to said address port of said second memory when said switch means is in a third state, such that said video data is stored in said second memory in unpacked format when said switch means is in said third state.