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aluMux.write(0); // B = Rr2
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wbMux.write(0); // use alu result
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call.write(0);
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break;
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/*
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** Transfer Imm to the Register rd
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*/
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case 0b0010:
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aluOp.write(0b00111); // transfer B (rd = Imm)
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regWrite.write(1);
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r.write(0);
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w.write(0);
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regMux.write(0);
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aluMux.write(1); // B = imm
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wbMux.write(0);
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call.write(0);
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break;
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/*
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** Add Imm with register rd content and move it to the Register rd
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*/
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case 0b0011:
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aluOp.write(0b00100); // Add A and B (rd += Imm)
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regWrite.write(1);
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r.write(0);
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w.write(0);
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regMux.write(1);
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aluMux.write(1);
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wbMux.write(0);
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call.write(0);
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break;
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/*
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** LOAD from Imm address of memory to rd
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*/
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case 0b0100:
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aluOp.write(0);
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regWrite.write(1);
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r.write(1);
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w.write(0);
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regMux.write(0);
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aluMux.write(0);
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wbMux.write(1); // use memory result
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call.write(0);
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break;
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/*
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** STORE rd content to imm address of memory
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*/
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case 0b0101:
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aluOp.write(0); // transfer A
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regWrite.write(0); // don't write back to register
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r.write(0);
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w.write(1);
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regMux.write(1); // r1 = reg (rd)
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aluMux.write(0); // ignorable!
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wbMux.write(0); // ignorable!
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call.write(0);
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break;
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/*
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** NOP
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*/
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case 0b1111:
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aluOp.write(0);
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regWrite.write(0);
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r.write(0);
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w.write(0);
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regMux.write(0);
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aluMux.write(0);
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wbMux.write(0);
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call.write(0);
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break;
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/*
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** CALL Acc.
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*/
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default:
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regWrite.write(0); // don't write back to register
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r.write(0);
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w.write(0);
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call.write(1);
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break;
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}
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}
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};
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/*
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* @ASCK
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*/
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#include <systemc.h>
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SC_MODULE (EXE) {
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sc_in_clk clk;
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sc_in <sc_int<8>> prev_result;
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sc_in <sc_int<13>> prev_Imm;
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