HIMEM Space
Now for mode 6, the other 25-row mode. This is an 80 column mode, so it uses 16,000 bytes of memory for the screen, but HIMEM is set at 16384 meaning that 384 bytes above the screen are unused. Here I have poked a 255 byte string into the location above the top of the screen. It works, as before, and doesn't corrupt the screen.
