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Elite on the BBC Micro

Start and end: TT170 (Cassette version)

       Name: TT170                                             [View in context]
       Type: Subroutine                                       [Compare versions]
   Category: Start and end
    Summary: Main entry point for the Elite game code
  Deep dive: Program flow of the main game loop



 This is the main entry point for the main game code.



.TT170

 LDX #&FF               \ Set the stack pointer to &01FF, which is the standard
 TXS                    \ location for the 6502 stack, so this instruction
                        \ effectively resets the stack. We need to do this
                        \ because the loader code in elite-loader.asm pushes
                        \ code onto the stack, and this effectively removes that
                        \ code so we start afresh

                        \ Fall through into BR1 to start the game