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A FPGA-based interface controller for[http://www.limpkin.fr/index.php?post/2011/05/12/Oops...-I-dit-it-again%21 Limpkin's RGB LED matrices]. == Components =Matrix reference === * size: 64x32 RGB LEDs* organization: 2 blocks (upper and lower) with each 16 lines à 64 LEDs* (6) 64 bit shift registers* input pins:** R, G, B for each upper and lower: R1, G1, B1, R2, G2, B2; 1 = LED on** clock (next bit, rising edge)** latch (latch shifted data to output, rising edge)** enable (drives LEDs from latched data?, 0 = enable)** 5V signals** 40ns period = 25MHz max. == Overview == * FPGA drives 1 or more (up to 4?) matrices* use block ram or external SRAM for frame buffer storage* interface with PC === Feature ideas === * double buffering* larger off-screen buffer + compositing ops?* character generation* update only sections* small CPU core to execute short programs?
