On 1 Jul, 08:57, nickooooola <[EMAIL PROTECTED]> wrote: > Hello to all > I'm about to write a simulator for a microcontroller in python > (why python? because I love it!!!) > > but I have a problem. > > The registry of this processor are all 8 bit long (and 10 bit for some > other strange register) > and I need to simulate the fixed point behaviour of the register, > and to access the single bit. > > f.x. (this is a pseudo python session, only for understanding) > > >>> reg1 = fixed_int(8) > >>> reg2 = fixed_int(10) > >>> reg1[0].set() > or > >>> reg1[0] = 1 # or True? how to rapresent a binary bit > >>> reg1[0] > 1 > >>> reg1[1] > 0 > >>> reg1[9] > > <exception .... blah blah not in range>>>> reg2 = 0x7FE # in binary > 11111111110 , or 11 bit long > >>> reg2 > > 0x7FE > #or 1111111110, the memorization truncate the upper bits ( or perhaps > generate an exception?)>>> reg2 += 0x02 #the result is 10000000000, again not > contained in 10 bit > >>> reg2 > > 0x00 > # truncated again>>> myprocessor.flags['z'] > > 1 > # or True? Z flag indicated an overflow in arithmetic operations > > Is possibile to do so in python? > > thanks
I am not sure if it is exactly what you are looking for (it may be a bit low level), but myHDL may be interesting. It provides low level H/ W simulation capabilities. http://myhdl.jandecaluwe.com/doku.php Steven -- http://mail.python.org/mailman/listinfo/python-list
