Version analysis of LAUN - Elite on the 6502

This code appears in the following versions (click to see it in the source code):

Cassette, Disc (flight), Disc (docked), 6502 Second Processor, Master and Electron

Code variations between these versions are shown below.

       Name: LAUN
       Type: Subroutine
   Category: Drawing circles
    Summary: Make the launch sound and draw the launch tunnel


 This is shown when launching from or docking with the space station.


.LAUN

Code variation 1 of 1Specific to an individual platform

Tap on a block to expand it, and tap it again to revert.

Cassette, Flight, Docked, 6502SP, Electron
Master
 LDA #48                \ Call the NOISE routine with A = 48 to make the sound
 JSR NOISE              \ of the ship launching from the station
 LDY #solaun            \ Call the NOISE routine with Y = 8 to make the sound
 JSR NOISE              \ of the ship launching from the station

 LDA #8                 \ Set the step size for the launch tunnel rings to 8, so
                        \ there are fewer sections in the rings and they are
                        \ quite polygonal (compared to the step size of 4 used
                        \ in the much rounder hyperspace rings)

                        \ Fall through into HFS2 to draw the launch tunnel rings