DPGEN_SHIFT(3) Alliance - genlib User's Manual DPGEN_SHIFT(3) NAME DPGEN_SHIFT - Shifter Macro-Generator SYNOPSIS #include <genlib.h> void GENLIB_MACRO (DPGEN_SHIFT, char *modelname, long flags, long N); DESCRIPTION Generate a N bits shifter with name modelname. How it works : * if the op[0] signal is set to '1' performs a right shift, performs a left shift otherwise. * if the op[1] signal is set to '1' performs an arithmetic shift (only meaningful in case of a right shift). * shamt : specifies the shift amount. The width of this signal (Y) is com- puted from the operator's width : Y = ceil(log2(N)) - 1. TERMINAL NAMES 1. op : select the kind of shift (input, 2 bit). 2. shamt : the shift amount (input, Y bits). 3. i : value to shift (input, N bits). 4. o : output (N bits). 5. vdd : power. 6. vss : ground. EXAMPLE GENLIB_MACRO(DPGEN_SHIFT, "model_shift_32", F_BEHAV|F_PLACE, 32); GENLIB_LOINS("model_shift_32", "instance1_shift_32", "op[1:0]", "shamt[4:0]", "x[31:0]", "y[31:0]", "vdd", "vss", NULL); SEE ALSO GENLIB_MACRO(3), genlib(1) ASIM/LIP6 30 July 2004 DPGEN_SHIFT(3)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | SEE ALSO
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