PS/2 FUNCTION KEYS:
F1 - LIST      F5 - DIRectory   F9  - 6502 Monitor
F2 - PRINT     F6 - BANK 0      F10 - LABBUS 0   
F3 - RENUMBER  F7 - BANK 1      F11 - LABBUS 1   
F4 - PEEK(     F8 - Terminal    F12 - LABBUS 2   
ESC - Quit BASIC program      PAUSE - Reset
PRTSCR      - Clear screen & graphic window
TAB         - Copy char under cursor to input buffer
SHIFT-ENTER - Get complete line
CTRL-arrows - Cursor skip to next separator character
INSERT/DEL  - as usual, also ARROWS
HOME/END    - Skip to 1st/end char in line
PAGE UP/DWN - Cursor home/bottom
EhBASIC core by Lee Davison, <leeedavison@googlemail.com>
c't-Lab FPGA extensions by C.Meyer 12/09, <cm@ct.de>