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Simplify shift_op signal

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Olof Kindgren 2021-10-08 22:42:02 +02:00
parent 9c4bdd4bfe
commit 28953fec4c
1 changed files with 1 additions and 2 deletions
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3
rtl/serv_decode.v
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@ -73,13 +73,12 @@ module serv_decode
reg imm25;
reg imm30;
wire op_or_opimm = (!opcode[4] & opcode[2] & !opcode[0]);
wire co_mdu_op = MDU & (opcode == 5'b01100) & imm25;
wire co_two_stage_op =
~opcode[2] | (funct3[0] & ~funct3[1] & ~opcode[0] & ~opcode[4]) |
(funct3[1] & ~funct3[2] & ~opcode[0] & ~opcode[4]) | co_mdu_op;
wire co_shift_op = op_or_opimm & (funct3[1:0] == 2'b01) & !co_mdu_op;
wire co_shift_op = (opcode[2] & ~funct3[1]) & !co_mdu_op;
wire co_slt_or_branch = (opcode[4] | (funct3[1] & opcode[2]) | (imm30 & opcode[2] & opcode[3] & ~funct3[2])) & !co_mdu_op;
wire co_branch_op = opcode[4];
wire co_dbus_en = ~opcode[2] & ~opcode[4];