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
 References: This variable is used as follows:
             * DKS1 uses KYTB
             * NO3 uses KYTB
             * SFRMIS 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.

 Note that KYTB actually points to the byte before the start of the table, so
 the offset of the first key value is 1 (i.e. KYTB+1), not 0.


 Other entry points:

   KYTB                 Contains an RTS


.KYTB

 RTS                    \ Return from the subroutine (used as an entry point and
                        \ a fall-through from above)

                        \ 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      Pull up
 EQUB &51 + 128         \ S         KYTB+6      Pitch down
 EQUB &41 + 128         \ A         KYTB+7      Fire lasers

                        \ These are the secondary flight controls:

                        \ --- Mod: Code removed for Elite-A: ------------------>

\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

                        \ --- And replaced by: -------------------------------->

 EQUB &60               \ TAB       KYTB+8      Activate hyperspace unit
 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 &63               \ V         KYTB+15     Docking computer

                        \ --- End of replacement ------------------------------>

 EQUB &37               \ P         KYTB+16     Cancel docking computer