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//  @(#)decodecomparesandneg.v	1.1  4/7/92
//
/* Negate sign for the following entries
     Inst 045 N
     Inst 046 N
     Inst 151  N
     Inst 152  N
     Inst 155  N
     Inst 156  N
     
    N = FPOP2Map | x 01xx 01xx 
     */

module DecodeCmpAndNeg (
       Phi,
       FpInst2, FpInst3, FpInst6, FpInst7,
       FPOP2Map,
       CMPDecoded, CMPEDecoded, NegateOprSign);

input  Phi,
       FpInst2, FpInst3, FpInst6, FpInst7, FPOP2Map;
output CMPDecoded, CMPEDecoded;
output NegateOprSign;

ME_INVA dcep1 (FpInst2, notFpInst2);
ME_NAND2 dcep2 (FPOP2Map, notFpInst2, notCMP);
ME_NAND2 dcep3 (FPOP2Map, FpInst2, notCMPE);
ME_FD1 dcep4  (Phi, notCMP, , CMPDecoded);
ME_FD1 dcep5  (Phi, notCMPE, , CMPEDecoded);

ME_INVA dcep9 (FpInst3, notFpInst3);
ME_INVA dcep6 (FpInst7, notFpInst7);
ME_AND4 dcep7 (FpInst6, notFpInst7, FpInst2, notFpInst3, DyadicSub);

ME_NOR2 decep8 (FPOP2Map, DyadicSub, s_0);
ME_FD1 iggypop (Phi, s_0, , NegateOprSign);
endmodule