KEY    |  function      | description
----------+----------------+-------------------------------------------------------------------------
    F1    |     -          | 
 F1+Shift | Write RAM      | writes specified byte into specified external RAM register
    F2    | Change SFR     | changes line in SFR Registers window to watch specified SFR register
 F2+Shift | Write SFR      | enables you to write a byte value into specified SFR register
    F3    | Manual Scroll  | Disassembler window content is scrolled manually through arrow keys
 F3+Shift | Auto Scroll    | Disassembler window content is scrolled automaticaly depending on PC register
    F4    | Debug Mode     | In this mode you can execute instructions step by step by pressing F7 or F8
 Shitf+F4 | Run            | instructions are executed automaticaly
    F5    | Disasm View    | changes viewed position in disassembler window
 Shift+F5 | Monitor View   | changes viewed position in RAM Monitor window
    F6    | Write PC       | changes PC (you can manually jump to specified place in memory)
 Shift+F6 |     -          | 
    F7    | Trace Into     | execute single instruction (works in debug mode)
 Shift+F7 | Load Binary    | Loads binary file into memory
    F8    | Step Over      | = Trace Into (works in debug mode)
 Shift+F8 | Load IntelHEX  | Loads intelHEX file into memory
    F9    |     -          |
 Shift+F9 | Load Source    | compiles file through external compiler and loads executable 
          |                | (works only under windows with asm51 by MetaLink)
    F10   | Fill External  | fills specified external memory range with specified byte
Shift+F10 | Break Point    | 
    F11   | Speed          | you can specify how many instructions should be simulated per frame refresh in run mode
Shift+F11 | Memory Mode    | you can choose how memory is connected to 8051: in mixed mode (program and data memory are same)
          |                | or separetly
    F12   | Reset          | 8051 reset signal
Shift+F12 |     -          |

Arrows are dedicated to scroll disassembler window content
PageUP and PageDOWN - scroll RAM Monitor window content (with Shift pressed scrolls bytes, not lines)
Alt+x - EXIT