📄 m3s077ct.v
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//******************************************************************* ////IMPORTANT NOTICE ////================ ////Copyright Mentor Graphics Corporation 1996 - 1998. All rights reserved. ////This file and associated deliverables are the trade secrets, ////confidential information and copyrighted works of Mentor Graphics ////Corporation and its licensors and are subject to your license agreement ////with Mentor Graphics Corporation. //// ////These deliverables may be used for the purpose of making silicon for one ////IC design only. No further use of these deliverables for the purpose of ////making silicon from an IC design is permitted without the payment of an ////additional license fee. See your license agreement with Mentor Graphics ////for further details. If you have further questions please contact ////Mentor Graphics Customer Support. //// ////This Mentor Graphics core (m320c50eng v1999.010) was extracted on ////workstation hostid 800059c1 Inventra //// ALU Output Rotate/Shift and Scale// Copyright Mentor Graphics Corporation and Licensors 1998. // V1.002// m3s077ct.v// M320c50 ALU Output Rotate/Shift and Scale// RSCntrl:// 0 : Straight through// 1 : Shift right// 2 : Shift left// 3 : Overflow//// RSSrc selects input source (0=ALU_Op, 1=RightShiftOp)module m3s077ct (ALU_Op, RightShiftOp, ACCB, ShiftRotateOp, RSCntrl, RSSrc, TopBit, BotBit);//******************************************************************* ////IMPORTANT NOTICE ////================ ////Copyright Mentor Graphics Corporation 1996 - 1998. All rights reserved. ////This file and associated deliverables are the trade secrets, ////confidential information and copyrighted works of Mentor Graphics ////Corporation and its licensors and are subject to your license agreement ////with Mentor Graphics Corporation. //// ////These deliverables may be used for the purpose of making silicon for one ////IC design only. No further use of these deliverables for the purpose of ////making silicon from an IC design is permitted without the payment of an ////additional license fee. See your license agreement with Mentor Graphics ////for further details. If you have further questions please contact ////Mentor Graphics Customer Support. //// ////This Mentor Graphics core (m320c50eng v1999.010) was extracted on ////workstation hostid 800059c1 Inventra // input [31:0] ALU_Op, RightShiftOp, ACCB; input [1:0] RSCntrl; input [2:0] RSSrc; input TopBit, BotBit; output [31:0] ShiftRotateOp; reg [31:0] ShiftRotateIp, ShiftRotateOp;always @(ALU_Op or RightShiftOp or ACCB or RSSrc) ShiftRotateIp = (ALU_Op & {32{RSSrc[0]}} | RightShiftOp & {32{RSSrc[1]}} | ACCB & {32{RSSrc[2]}});always @(ShiftRotateIp or RSCntrl or TopBit or BotBit)case (RSCntrl) 0: ShiftRotateOp = ShiftRotateIp; // straight through 1: ShiftRotateOp = {TopBit, ShiftRotateIp[31:1]}; // shift right 2: ShiftRotateOp = {ShiftRotateIp[30:0], BotBit}; // shift left 3: ShiftRotateOp = {TopBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit, BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit, BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit, BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit,BotBit}; // overflowendcase endmodule⌨️ 快捷键说明
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