I have an ESP-07 modules, however, the Interupt does not work on the GPIO16 and GPIO12, i use 10K Pulldowns.
GPIO14 - Works
EDIT: i use ESP Basic 3.0.Alpha 66
[isr]
interrupt GPIO16, [switch1]
wait
[switch1]
if io(laststat,GPIO16) = 1 then print "Hello"
goto [isr]
mfg sandfrog