clivechen
Member level 3
Hi, everybody
I don't know the difference between the first section code and the second section code? Please give me some advices and hints. thank you!!
Thanks for any reply!
clive chen
the first section:
the second section:
I don't know the difference between the first section code and the second section code? Please give me some advices and hints. thank you!!
Thanks for any reply!
clive chen
the first section:
Code:
assign a_eq_b = (comp_a == comp_b);
assign a_lt_b = (comp_a < comp_b);
always @(comp_op or a_eq_b or a_lt_b) begin
case(comp_op[2:0]) // synopsys parallel_case
`OR1200_COP_SFEQ:
flagcomp = a_eq_b;
`OR1200_COP_SFNE:
flagcomp = ~a_eq_b;
`OR1200_COP_SFGT:
flagcomp = ~(a_eq_b | a_lt_b);
`OR1200_COP_SFGE:
flagcomp = ~a_lt_b;
`OR1200_COP_SFLT:
flagcomp = a_lt_b;
`OR1200_COP_SFLE:
flagcomp = a_eq_b | a_lt_b;
default:
flagcomp = 1'b0;
endcase
endthe second section:
Code:
wire [width-1:0] comp_a;
wire [width-1:0] comp_b;
always @(comp_op or comp_a or comp_b) begin
case(comp_op[2:0]) // synopsys parallel_case
`OR1200_COP_SFEQ:
flagcomp = (comp_a == comp_b);
`OR1200_COP_SFNE:
flagcomp = (comp_a != comp_b);
`OR1200_COP_SFGT:
flagcomp = (comp_a > comp_b);
`OR1200_COP_SFGE:
flagcomp = (comp_a >= comp_b);
`OR1200_COP_SFLT:
flagcomp = (comp_a < comp_b);
`OR1200_COP_SFLE:
flagcomp = (comp_a <= comp_b);
default:
flagcomp = 1'b0;
endcase
end