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/* $Id: aeMB2_ctrl.v,v 1.2 2008-04-20 16:34:32 sybreon Exp $
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/* $Id: aeMB2_ctrl.v,v 1.3 2008-04-26 01:09:05 sybreon Exp $
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**
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**
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** AEMB2 EDK 6.2 COMPATIBLE CORE
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** AEMB2 EDK 6.2 COMPATIBLE CORE
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** Copyright (C) 2004-2008 Shawn Tan <shawn.tan@aeste.net>
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** Copyright (C) 2004-2008 Shawn Tan <shawn.tan@aeste.net>
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**
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**
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** This file is part of AEMB.
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** This file is part of AEMB.
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** Public License for more details.
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** Public License for more details.
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**
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**
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** You should have received a copy of the GNU Lesser General Public
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** You should have received a copy of the GNU Lesser General Public
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** License along with AEMB. If not, see <http:**www.gnu.org/licenses/>.
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** License along with AEMB. If not, see <http:**www.gnu.org/licenses/>.
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*/
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*/
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/**
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/**
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* Instruction Decode & Control
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* Instruction Decode & Control
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* @file aeMB2_ctrl.v
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* @file aeMB2_ctrl.v
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* This is the data decoder that will control the command signals and
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* This is the data decoder that will control the command signals and
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rd_of <= #1 wRD;
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rd_of <= #1 wRD;
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ra_of <= #1 wRA;
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ra_of <= #1 wRA;
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//rb_of <= #1 wRB;
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//rb_of <= #1 wRB;
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imm_of <= #1 wIMM;
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imm_of <= #1 wIMM;
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end
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end // if (dena)
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// immediate implementation
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// immediate implementation
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reg [15:0] rIMM0, rIMM1;
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reg [15:0] rIMM0, rIMM1;
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reg rFIM0, rFIM1;
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reg rFIM0, rFIM1;
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2'o1: opa_of <= #1 alu_ex;
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2'o1: opa_of <= #1 alu_ex;
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2'o2: opa_of <= #1 {rpc_if, 2'o0};
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2'o2: opa_of <= #1 {rpc_if, 2'o0};
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2'o3: opa_of <= #1 {rpc_if, 2'o0};
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2'o3: opa_of <= #1 {rpc_if, 2'o0};
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endcase // case (mux_opa)
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endcase // case (mux_opa)
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end
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end // if (dena)
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// Hazard Detection
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// Hazard Detection
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wire wFMUL = (mux_ex == MUX_MUL);
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wire wFMUL = (mux_ex == MUX_MUL);
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wire wFBSF = (mux_ex == MUX_BSF);
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wire wFBSF = (mux_ex == MUX_BSF);
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wire wFMEM = (mux_ex == MUX_MEM);
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wire wFMEM = (mux_ex == MUX_MEM);
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(wFMUL | wFBSF | wFMEM | wFMOV);
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(wFMUL | wFBSF | wFMEM | wFMOV);
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assign hzd_bpc = (bra_ex[1] & !bra_ex[0]);
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assign hzd_bpc = (bra_ex[1] & !bra_ex[0]);
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endmodule // aeMB2_ctrl
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endmodule // aeMB2_ctrl
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// $Log: not supported by cvs2svn $
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// Revision 1.1 2008/04/18 00:21:52 sybreon
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// Initial import.
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//
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/*
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$Log: not supported by cvs2svn $
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Revision 1.2 2008/04/20 16:34:32 sybreon
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Basic version with some features left out.
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Revision 1.1 2008/04/18 00:21:52 sybreon
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Initial import.
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*/
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No newline at end of file
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No newline at end of file
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