Test if emu emulate $mem[idx] correctly
CLI
emu - 1
STDIN
$A = 0x500
$mem[1] = $A
$A = 0x501
$mem[0] = $A
$A = $mem[1]
return $A
STDOUT
$A = 0x500
$mem[0x1] = $A
$A = 0x501
$mem[0x0] = $A
$A = $mem[0x1]
return $A # $A = 0x500, KILL
