 These drivers were shareware and buying them let receiving their source code and technical support; now they are no longer supported and come as abandonware.Main bugs are lack of aligning bytes support in VESA true-color modes (so the true-color driver is not suitable for Nvidia graphic cards) and video memory bank switching bug in mouse driver (since real mode addressing space is 1 megabyte, but some video modes require up to 4 megabytes of memory, it is split into 64 kilobyte banks).The following program, written for Borland Turbo C, initialises the graphics and draws 1000 random lines