def i_KRC(indirect, address, instruction):
global AC
AC |= Kbd.read()
Kbd.clear()
Trace.itrace('KRC')
return 1
def i_KSN():
global PC
if not Kbd.ready():
PC = (PC + 1) & WORDMASK
Trace.itrace('KSN')
return 1
def i_KSF():
global PC
if Kbd.ready():
PC = (PC + 1) & WORDMASK
Trace.itrace('KSF')
return 1
def i_KCF(indirect, address, instruction):
Kbd.clear()
Trace.itrace('KCF')
return 1
