for when "10 print peek(56320): goto 10" is not enough

joystick test (c64)

10 rem joystick port test mini tool, press <space> to switch ports
20 p=56320:s=0
30 print" {return*2}{cyan} joystick (#"str$(2-s)") port"p+s"{return*2}"
40 j=peek(p+s): print"{up*2}{light gray} 0  1  2  3  4  5  6  7  val{light blue}"
50 geta$:if a$=" " then s=abs(s-1):print"{up*4}";:goto 30
60 print abs((jand1)>0)abs((jand2)>0)abs((jand4)>0)abs((jand8)>0);
70 print abs((jand16)>0)abs((jand32)>0)abs((jand64)>0)abs((jand128)>0);j
80 goto 40