I tried this hello world program and it doesn't really seem to work. Something about it is broken. I made my own version that does work:

INITSP
MOVLR 0B E0
MOVLR A0 E1
CALL 10
INCR E1
LOOP E0 07
JMP 00
MOVIRA E1
OUTKBD
SPEED 15
OUTCLRKBD
SPEED 00
RETURN

Then put these bytes in memory starting at A0:
51 4E 55 55 58 64 60 58 5B 55 4D