Content originally posted in LPCWare by frame on Tue May 01 03:23:21 MST 2012
For a LCD board with driver chip, you would need a hardware memory interface to drive it directly with memory accesses.
Otherwise, you would just need patience. I have a sample driver project for the EA QVGA display, driven by GPIO in 8 Bit mode. The fastest implementation is on a STM32F4 with 168MHz, which still needs about 2 seconds to fill the screen. I consider this sufficient for text and a few graphics elements, but not GUIs.