public static void MovePage(int value)
{
uint move_count, move_src, move_dst;
uint fill_count, fill_dst;
if (value > 0)
{
fill_count = (uint)(value * scanline);
move_count = bufferSize - fill_count;
move_src = fill_count;
move_dst = 0;
fill_dst = move_count;
}
else
{
fill_count = (uint)((-value) * scanline);
move_count = bufferSize - fill_count;
move_src = 0;
move_dst = fill_count;
fill_dst = 0;
}
videoMemory.Move((uint)videoMemory.address + move_src, (uint)videoMemory.address + move_dst, move_count);
videoMemory.Fill(fill, fill_dst, fill_count);
}