LAX(5) CAO-VLSI Reference Manual LAX(5) NAME lax - Parameter file for logic synthesis SYNOPSIS filename.lax DESCRIPTION The .lax file contains user modifiable parameters that lead to different logic synthesis. EXAMPLE Circuit Interfce -- Entity Declaration ENTITY digia IS PORT ( clock : in BIT; -- clock jour : in BIT; -- jour reset : in BIT; -- reset vdd : in BIT; -- vdd vss : in BIT; -- vss i : in bit_vector(3 DOWNTO 0) ; -- i porte : out BIT; -- porte alarm : out BIT; -- alarm ep_0 : out BIT; -- ep_0 ep_1 : out BIT; -- ep_1 ep_2 : out BIT; -- ep_2 ep_3 : out BIT; -- ep_3 ep_4 : out BIT; -- ep_4 ep_5 : out BIT; -- ep_5 ep_a : out BIT -- ep_a ); END digia; -- Architecture Declaration ARCHITECTURE behaviour_data_flow OF digia IS SIGNAL cs : REG_VECTOR(0 TO 2) REGISTER; -- cs SIGNAL cs_ea : BIT; -- cs_ea SIGNAL ef_ea : BIT; -- ef_ea SIGNAL cs_e5 : BIT; -- cs_e5 SIGNAL ef_e5 : BIT; -- ef_e5 SIGNAL cs_e4 : BIT; -- cs_e4 SIGNAL ef_e4 : BIT; -- ef_e4 SIGNAL cs_e3 : BIT; -- cs_e3 SIGNAL ef_e3 : BIT; -- ef_e3 SIGNAL cs_e2 : BIT; -- cs_e2 SIGNAL ef_e2 : BIT; -- ef_e2 SIGNAL cs_e1 : BIT; -- cs_e1 SIGNAL ef_e1 : BIT; -- ef_e1 SIGNAL cs_e0 : BIT; -- cs_e0 SIGNAL ef_e0 : BIT; -- ef_e0 SIGNAL ef : BIT_VECTOR(0 TO 2); -- ef .Lax parameter file ## This line is a comment ## Set the Optimisation Mode (0..4) ## 0 : full area optimisation ## 2 : 50% area, 50% delay ## 4 : full delay optimisation ## Used by boog and loon #M{4} ## Set the Optimisation Level (1..5) ## 1 : poor optimisation - small computation time ## 5 : best optimisation - long computation time #L{5} ## External Input Delay (in ns) ## Those signals are taken into account to optimise ## the global delay of the circuit. ## Used by boog and loon #D{ i(3):300; i(0):100; jour:120; } ## Set the list of early outputs ## Some outputs may be critical. They can be ## optimized in delay before others regardless ## of the optimisation mode. #E{ porte; ep_3; } ## Set the list of auxiliary (intermediate) signals to keep ## This can be used to decrease the memory consuption ## when trying to reorder Bdds. Those signals won't ## be reordered. #S{ cs_ea; ef_0; ef_1; ef_e4; } ## The following parameters are used for whith glop ## (Delayed --#D--inputs are also used) ## Fanout factor : the max fanout of the ## output connector is multiplied by this factor #T{1000} ## Input Capacitance : The primary inputs of the circuit ## can have fanout values. (in fF) #F{ jour:50; } ## External Output Capacitance (in fF) ## Used by boog and loon #C{ porte:50; } ## External Input Impedance (in Ohms) ## Used by boog and loon #I{ jour:5000; } ## Buffered Input : this is a list of primary inputs whith ## the number of buffer you want to add. #B{ clock:1; } SEE ALSO boom(1), boog(1). loon(1). ASIM/LIP6 October 1, 1997 LAX(5)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | SEE ALSO
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