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Elite on the BBC Micro

Keyboard: b_table [Elite-A, Flight]

Name: b_table [Show more] Type: Variable Category: Keyboard Summary: Lookup table for Delta 14b joystick buttons Deep dive: Delta 14b joystick support
Context: See this variable in context in the source code References: This variable is used as follows: * b_14 calls b_table

In the following table, which maps buttons on the Delta 14b to the flight controls, the top nibble of the value gives the column: &6 = %110 = left column &5 = %101 = middle column &3 = %011 = right column while the lower nibble gives the row: &1 = %0001 = top row &2 = %0010 = second row &4 = %0100 = third row &8 = %1000 = bottom row This results in the following mapping (as the top two fire buttons are treated the same as the top button in the middle row): Fire laser Fire laser Slow down Fire laser Speed up Unarm Missile Fire Missile Target missile Hyperspace Unit E.C.M. Escape pod Docking computer on In-system jump Docking computer off
\ --- Mod: Whole section added for Elite-A: -----------> .b_table EQUB &61 \ Left column Top row KYTB+1 Slow down EQUB &31 \ Right column Top row KYTB+2 Speed up EQUB &80 \ - KYTB+3 Roll left EQUB &80 \ - KYTB+4 Roll right EQUB &80 \ - KYTB+5 Pitch up EQUB &80 \ - KYTB+6 Pitch down EQUB &51 \ Middle column Top row KYTB+7 Fire lasers EQUB &64 \ Left column Third row KYTB+8 Hyperspace unit EQUB &34 \ Right column Third row KYTB+9 Escape pod EQUB &32 \ Right column Second row KYTB+10 Arm missile EQUB &62 \ Left column Second row KYTB+11 Unarm missile EQUB &52 \ Middle column Second row KYTB+12 Fire missile EQUB &54 \ Middle column Third row KYTB+13 E.C.M. EQUB &58 \ Middle column Bottom row KYTB+14 In-system jump EQUB &38 \ Right column Bottom row KYTB+15 Docking computer EQUB &68 \ Left column Bottom row KYTB+16 Cancel docking \ --- End of added section ---------------------------->