119 lines
2.1 KiB
Python
119 lines
2.1 KiB
Python
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def dec2bin(d, nb=0):
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if d=="x":
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return "x"*nb
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elif d==0:
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b="0"
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else:
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b=""
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while d!=0:
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b="01"[d&1]+b
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d=d>>1
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return b.zfill(nb)
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def get_bits(values, width, low, high=None):
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r = []
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for val in values:
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t = dec2bin(val, width)[::-1]
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if high == None:
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t = t[low]
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else:
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t = t[low:high]
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t = t[::-1]
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t = int(t,2)
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r.append(t)
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return r
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class Dat(list):
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def __init__(self, width):
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self.width = width
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def __getitem__(self, key):
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if isinstance(key, int):
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return get_bits(self, self.width, key)
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elif isinstance(key, slice):
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if key.start != None:
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start = key.start
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else:
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start = 0
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if key.stop != None:
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stop = key.stop
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else:
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stop = self.width
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if stop > self.width:
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stop = self.width
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if key.step != None:
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raise KeyError
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return get_bits(self, self.width, start, stop)
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else:
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raise KeyError
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def decode_rle(self):
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rle_bit = self[-1]
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rle_dat = self[:self.width-1]
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dat = Dat(self.width)
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i=0
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last = 0
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for d in self:
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if rle_bit[i]:
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if len(dat) >= 1:
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# FIX ME... why is rle_dat in reverse order...
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for j in range(int(dec2bin(rle_dat[i])[::-1],2)):
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dat.append(last)
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else:
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dat.append(d)
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last = d
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i +=1
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return dat
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class Var:
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def __init__(self, name, width, values=[], type="wire", default="x"):
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self.type = type
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self.width = width
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self.name = name
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self.val = default
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self.values = values
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self.vcd_id = None
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def set_vcd_id(self, s):
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self.vcd_id = s
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def __len__(self):
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return len(self.values)
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def change(self, cnt):
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r = ""
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try :
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if self.values[cnt+1] != self.val:
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r += "b"
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r += dec2bin(self.values[cnt+1], self.width)
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r += " "
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r += self.vcd_id
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r += "\n"
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return r
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except :
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return r
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return r
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class Dump:
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def __init__(self):
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self.vars = []
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self.vcd_id = "!"
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def add(self, var):
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var.set_vcd_id(self.vcd_id)
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self.vcd_id = chr(ord(self.vcd_id)+1)
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self.vars.append(var)
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def add_from_layout(self, layout, var):
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i=0
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for s, n in layout:
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self.add(Var(s, n, var[i:i+n]))
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i += n
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def __len__(self):
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l = 0
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for var in self.vars:
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l = max(len(var),l)
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return l
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