uHex Code

replaced all MODULO operations by (much faster) binary AND

micro-optimization (removed an unnecessary strlen() call)

micro-optimization (one memcpy call less)

replaced malloc()+strcpy() by a single strdup() (slightly faster and slightly smaller)

a few code reformating changes, and added check for out of memory conditions, too

implemented a read disk cache to limit the number of disk I/O accesses

slight reformatting

screen width is detected via INT10,F instead of relying on reading BIOS area

implemented direct video memory access for faster i/o (Alexey Voskov, fixed by Mateusz Viste for mono modes)

added a wcl makefile (by Alexey Voskov)