Re: [eclipse-clp-users] Syntax error in source transformation

From: Valerio <valemn_at_...6...>
Date: Thu, 10 Apr 2008 17:44:05 +0200
Hi Joachim,
thank you for your help.
You are right, my code is generated by a tool I wrote. It basically
takes a hardware description of a design in input and it produces an
ECLiPSe script which describes the EFSM behaviour (i.e. state
transitions) in terms of constraints.
The problem with your suggestion is that I do not see a way to set up
the constraints directly.
The constraints related to the transitions must all be included within
the for loop, and they are too specific, I see no way to write a
generic predicate like the one you wrote in your example.
Here is a sample of the main for loop, I hope it helps:

% transition #1

	(S0[J] and neg(INTERRUPT[J] #= 1 and I[J] #= 1)) => E1[J],
	E1[J] => (S0[J] and neg(INTERRUPT[J] #= 1 and I[J] #= 1)),
	(E1[J] and (S0[J] and neg(INTERRUPT[J] #= 1 and I[J] #= 1))) =>
(FLAG[J1] #= I[J] * 2^4 + V[J] * 2^3 + C[J] * 2^2 + Z[J] * 2^1 + N[J]
* 2^0 and ADBUS[J1] #= PC[J] and I_STATUS[J1] #= 0 and INTA[J1] #= 1
and AC[J1] #= AC[J] and BYTE1[J1] #= BYTE1[J] and BYTE2[J1] #=
BYTE2[J] and BYTE3[J1] #= BYTE3[J] and C[J1] #= C[J] and DATABUS_O[J1]
#= DATABUS_O[J] and I[J1] #= I[J] and IAC[J1] #= IAC[J] and IBYTE1[J1]
#= IBYTE1[J] and IBYTE3[J1] #= IBYTE3[J] and ICARRY[J1] #= ICARRY[J]
and IDBUS[J1] #= IDBUS[J] and IPC[J1] #= IPC[J] and ITEMP[J1] #=
ITEMP[J] and N[J1] #= N[J] and PC[J1] #= PC[J] and READ_MEM[J1] #=
READ_MEM[J] and TEMP[J1] #= TEMP[J] and V[J1] #= V[J] and
WRITE_MEM[J1] #= WRITE_MEM[J] and Z[J1] #= Z[J]),

% transition #3

	(S0[J] and INTERRUPT[J] #= 1 and I[J] #= 1) => E3[J],
	E3[J] => (S0[J] and INTERRUPT[J] #= 1 and I[J] #= 1),
	(E3[J] and (S0[J] and INTERRUPT[J] #= 1 and I[J] #= 1)) => (FLAG[J1]
#= I[J] * 2^4 + V[J] * 2^3 + C[J] * 2^2 + Z[J] * 2^1 + N[J] * 2^0 and
ADBUS[J1] #= PC[J] and I_STATUS[J1] #= 1 and INTA[J1] #= 1 and AC[J1]
#= AC[J] and BYTE1[J1] #= BYTE1[J] and BYTE2[J1] #= BYTE2[J] and
BYTE3[J1] #= BYTE3[J] and C[J1] #= C[J] and DATABUS_O[J1] #=
DATABUS_O[J] and I[J1] #= I[J] and IAC[J1] #= IAC[J] and IBYTE1[J1] #=
IBYTE1[J] and IBYTE3[J1] #= IBYTE3[J] and ICARRY[J1] #= ICARRY[J] and
IDBUS[J1] #= IDBUS[J] and IPC[J1] #= IPC[J] and ITEMP[J1] #= ITEMP[J]
and N[J1] #= N[J] and PC[J1] #= PC[J] and READ_MEM[J1] #= READ_MEM[J]
and TEMP[J1] #= TEMP[J] and V[J1] #= V[J] and WRITE_MEM[J1] #=
WRITE_MEM[J] and Z[J1] #= Z[J]),

The code for other transitions is pretty similar, except for state and
transitions variables (S<number> and E<number>).
If you think this sample is not enough, let me know, so that I can
produce the whole for loop (which is pretty large, indeed).

Valerio Guarnieri
Received on Thu Apr 10 2008 - 08:44:11 CEST

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