Universe: TT20

       Name: TT20                                                    [Show more]
       Type: Subroutine
   Category: Universe
    Summary: Twist the selected system's seeds four times
  Deep dive: Twisting the system seeds
             Galaxy and system seeds
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * HME2 calls TT20
             * TT111 calls TT20
             * TT22 calls TT20
             * TT23 calls TT20


 Twist the three 16-bit seeds in QQ15 (selected system) four times, to
 generate the next system.


.TT20

 JSR P%+3               ; This line calls the line below as a subroutine, which
                        ; does two twists before returning here, and then we
                        ; fall through to the line below for another two
                        ; twists, so the net effect of these two consecutive
                        ; JSR calls is four twists, not counting the ones
                        ; inside your head as you try to follow this process

 JSR P%+3               ; This line calls TT54 as a subroutine to do a twist,
                        ; and then falls through into TT54 to do another twist
                        ; before returning from the subroutine