Keyboard: KYTB

       Name: KYTB                                                    [Show more]
       Type: Variable
   Category: Keyboard
    Summary: Lookup table for in-flight keyboard controls
  Deep dive: The key logger
    Context: See this variable in context in the source code
 Variations: See code variations for this variable in the different versions
 References: This variable is used as follows:
             * DK4 uses KYTB
             * DKS1 uses KYTB


 Keyboard table for in-flight controls. This table contains the internal key
 codes for the flight keys (see p.142 of the Advanced User Guide for a list of
 internal key numbers).

 The pitch, roll, speed and laser keys (i.e. the seven primary flight
 control keys) have bit 7 set, so they have 128 added to their internal
 values. This doesn't appear to be used anywhere.


 KYTB = P% - 1          \ Point KYTB to the byte before the start of the table

                        \ These are the primary flight controls (pitch, roll,
                        \ speed and lasers):

 EQUB &68 + 128         \ ?         KYTB+1      Slow down
 EQUB &62 + 128         \ Space     KYTB+2      Speed up
 EQUB &66 + 128         \ <         KYTB+3      Roll left
 EQUB &67 + 128         \ >         KYTB+4      Roll right
 EQUB &42 + 128         \ X         KYTB+5      Pitch up
 EQUB &51 + 128         \ S         KYTB+6      Pitch down
 EQUB &41 + 128         \ A         KYTB+7      Fire lasers

                        \ These are the secondary flight controls:

 EQUB &60               \ TAB       KYTB+8      Energy bomb
 EQUB &70               \ ESCAPE    KYTB+9      Launch escape pod
 EQUB &23               \ T         KYTB+10     Arm missile
 EQUB &35               \ U         KYTB+11     Unarm missile
 EQUB &65               \ M         KYTB+12     Fire missile
 EQUB &22               \ E         KYTB+13     E.C.M.
 EQUB &45               \ J         KYTB+14     In-system jump
 EQUB &52               \ C         KYTB+15     Docking computer