The keyLoggerConfig variable - The Sentinel on the BBC Micro

       Name: keyLoggerConfig                                         [Show more]
       Type: Variable
   Category: Keyboard
    Summary: The configuration table for storing keys the key logger
    Context: See this variable in context in the source code
 References: This variable is used as follows:
             * ScanForGameKeys uses keyLoggerConfig


 Each game key has an entry in the keyLoggerConfig table that corresponds with
 the internal key number in the gameKeys table.

 Bits 0 and 1 determine the entry in the four-byte key logger where we should
 record each key press (entry numbers are 0 to 3).

 Bits 2 to 7 contain the value to store in the key logger at that entry.

 The key logger entries fall into four categories:

   * Entry 0 is for sideways movement keys (pan left, pan right)

   * Entry 1 is for action keys (absorb, transfer, create, hyperspace, U-turn)

   * Entry 2 is for vertical movement keys (pan up, pan down)

   * Entry 3 is for utility keys (volume control, pause)


.keyLoggerConfig

 EQUB 0 +  1 << 2       \ Put  1 in logger entry 0 for "S" (pan left)
 EQUB 0 +  0 << 2       \ Put  0 in logger entry 0 for "D" (pan right)

 EQUB 2 +  2 << 2       \ Put  2 in logger entry 2 for "L" (pan up)
 EQUB 2 +  3 << 2       \ Put  3 in logger entry 2 for "," (pan down)

 EQUB 1 + 32 << 2       \ Put 32 in logger entry 1 for "A" (absorb)
 EQUB 1 + 33 << 2       \ Put 33 in logger entry 1 for "Q" (transfer)
 EQUB 1 +  0 << 2       \ Put  0 in logger entry 1 for "R" (create robot)
 EQUB 1 +  2 << 2       \ Put  2 in logger entry 1 for "T" (create tree)
 EQUB 1 +  3 << 2       \ Put  3 in logger entry 1 for "B" (create boulder)
 EQUB 1 + 34 << 2       \ Put 34 in logger entry 1 for "H" (hyperspace)

 EQUB 3 +  0 << 2       \ Put  0 in logger entry 3 for "7" (volume down)
 EQUB 3 +  1 << 2       \ Put  1 in logger entry 3 for "8" (volume up)
 EQUB 3 +  2 << 2       \ Put  2 in logger entry 3 for COPY (pause)
 EQUB 3 +  3 << 2       \ Put  3 in logger entry 3 for DELETE (unpause)

 EQUB 1 + 35 << 2       \ Put 35 in logger entry 1 for "U" (U-turn)
Keyboard: keyLoggerConfig
