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Adding missing opcodes to CtrlMemRead

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This commit is contained in:
Aadi Desai 2020-12-17 09:02:58 -08:00
parent cb29efd034
commit ad394c7d7d
1 changed files with 1 additions and 1 deletions
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rtl/mips_cpu_control.v
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@ -117,7 +117,7 @@ always @(*) begin
CtrlMemtoReg = 3'd3;//write data port of regfile is fed from ALUHi CtrlMemtoReg = 3'd3;//write data port of regfile is fed from ALUHi
end else if ((op==SPECIAL)&&(funct == MFLO))begin end else if ((op==SPECIAL)&&(funct == MFLO))begin
CtrlMemtoReg = 3'd4;//write data port of regfile is fed from ALULo CtrlMemtoReg = 3'd4;//write data port of regfile is fed from ALULo
end else if ((op==SPECIAL)&&(funct == JR))begin end else if (((op==SPECIAL)&&(funct == JR)) || (op == BEQ) || ((op==REGIMM)&&(rt==BGEZ)) || (op==BGTZ) || ((op==REGIMM)&&(rt==BLTZ)) || (op==BLEZ) || (op==BNE) || (op==J))begin
CtrlMemRead = 0;//Read disabled during jump CtrlMemRead = 0;//Read disabled during jump
end else begin CtrlMemRead = 1'bx;end//Not all instructions are encompassed so, added incase for debug purposes end else begin CtrlMemRead = 1'bx;end//Not all instructions are encompassed so, added incase for debug purposes