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module signed_complex (A_R, A_C, B_R, B_C, D_R, D_C);
input signed [7:0] A_R, A_C;
input signed [7:0] B_R, B_C;
output signed [7:0] D_R, D_C;
assign D_R = (0 + A_R * B_R - A_C * B_C) >>> 8;
assign D_C = (0 + A_R * B_C + A_C * B_R) >>> 8;
endmodule
this r presently/mostly used IC's for multiplying4527 4-bit synchronous decade rate multiplier.
CD4527 BCD Rate Multiplier.
4089 4-bit synchronous binary rate multiplier.
CD4089BE Binary Rate CMOS Multiplier
CD4085BF CMOS Multiplier