class Shell(cmd.Cmd):
prompt='8008>'
initialized=False
def do_help(self,args):
rargs='do_'+args
if args and rargs in dir(self) and hasattr(self.__getattribute__(rargs),'__doc__'):
if self.__getattribute__(rargs).__doc__:
for line in self.__getattribute__(rargs).__doc__.splitlines():
print(line.strip())
elif args and not rargs in dir(self):
print('Command "{}" does not exists'.format(args))
else:
for cmd in dir(self):
if cmd.startswith('do_') and hasattr(self.__getattribute__(cmd),'__doc__'):
if self.__getattribute__(cmd).__doc__:
print(cmd[3:]+':',self.__getattribute__(cmd).__doc__)
def do_asm(self,args):
"""Enter Assembling mode"""
self.lastcmd=''
try:
if self.initialized:
self.cpu.load(code=asmsh())
else:
print('CPU not Initialized')
except Exception as e:
print(e)
def do_asm_img(self,args):
"""Enter Assembling mode (RAM Image Output)"""
self.lastcmd=''
try:
if self.initialized:
self.cpu.load(code=asmsh(fill=True))
else:
print('CPU not Initialized')
except Exception as e:
print(e)
def do_asm_file(self,args):
"""Load Assembler File"""
file=args
fill=True
if len(args)>1:
fill=args[1]
if self.initialized:
self.cpu.load(code=asm_file(file,fill))
else:
print('CPU not Initialized')
def do_init(self,args):
"""Initialize the CPU"""
verbose=bool(args)
self.cpu=CPU(verbose)
self.initialized=True
def do_load(self,args):
"""Load Assembled Program into RAM"""
if len(args):
file=args.split()[0]
if self.initialized:
print("Loading file {}".format(file))
self.cpu.load(file)
else:
print('CPU not Initialized')
def do_exit(self,args):
"""Exit"""
exit(0)
def do_EOF(self,args):
exit(0)
def do_rr(self,args):
"""print values of Registers"""
if self.initialized:
if args in self.cpu.registers:
print(self.cpu.registers[args])
else:
for r,v in self.cpu.registers.items():
print(r,v)
else:
print('CPU not Initialized')
def do_wr(self,args):
"""write value to Registers"""
value,reg='',''
if len(args.split())==2:
reg,value=args.split()
if value.isnumeric and reg in self.cpu.registers:
if self.initialized:
try:
self.cpu.registers[reg][0]=int(value)
except Exception as e:
print(e)
else:
print('CPU not Initialized')
def do_dumpmem(self,args):
"""Dump Memory"""
m_base=0
m_len=0
if len(args.split())>=2:
m_base=int(args.split()[0])
m_len=int(args.split()[1])
elif args:
m_len=int(args.split()[0])
else:
print('missing Argument "length"')
if self.initialized:
self.cpu.memory.dump(m_base,m_len)
else:
print('CPU not Initialized')
def do_go(self,args):
"""Execute Assembled Code"""
if self.initialized:
while 1:
if self.cpu.verbose:
self.cpu.dumpregs()
print("Flags:",self.cpu.flags)
print("Memory:")
self.cpu.memory.dump(length=8,width=32)
print('-'*10)
if not self.cpu():
break
else:
print('CPU not Initialized')
def do_bp(self,arg):
if self.initialized:
self.cpu.breakpoints.append(int(arg.split()[0]))
else:
print('CPU not Initialized')
