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⌂ ∞ ▽ Elite on the 6502

Version analysis of FRIN

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

Code variations between these versions are shown below.

.FRIN

 SKIP NOSH + 1          \ Slots for the ships in the local bubble of universe
                        \
                        \ There are #NOSH + 1 slots, but the ship-spawning
                        \ routine at NWSHP only populates #NOSH of them, so

Code variation 1 of 1A variation in the comments only

This variation is blank in the 6502 Second Processor version.

Cassette, Flight, Docked, Master, Electron
                        \ there are 13 slots but only 12 are used for ships

                        \ (the last slot is effectively used as a null
                        \ terminator when shuffling the slots down in the
                        \ KILLSHP routine)