oidi
terruptoldha
dlervoidr
r
i
tcou
t0r
r
voidi
terruptha
dlervoidr
r
disablei
terruptsduri
gtheha
dli
gofr
thei
terruptr
disabler
i
creasetheglobalcou
terr
cou
tr
ree
ablei
terruptsatthee
dofther
ha
dlerr
e
abler
calltheoldrouti
er
oldha
dlerr
r
r
i
tmai
voidr
r
savetheoldi
terruptvectorr
oldha
dlergetvectINTRr
r
i
stallthe
ewi
terruptha
dlerr
setvectINTRha
dlerr
r
loopu
tilthecou
terexceeds20r
whilecou
t20r
pri
tf