To load in xroar either:
File>Run>swirlin.bin and it should autorun
or File>Load>swirlin.bin then type "EXEC 4096"
or File>Cassette>Input Tape>swirlin.wav then type "CLOADM:EXEC"

or better yet run on a real Dragon 32 :^)

TôBach/SLP^TUHB 2023