Sample working code: .data: text0 "Hello, World!\n" .code: sd.int32 $4 123 sd.int32 $5 321 sd.int32 $10 1 sd.int32 $11 text0 sd.int32 $12 14 sys 4 sd.int32 $10 100 sys 1 bmath add Int32 $4 $5 $6