| Line 69... |
Line 69... |
8'h8c, 8'h9c, 8'hac, 8'hbc: begin end // cmps
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8'h8c, 8'h9c, 8'hac, 8'hbc: begin end // cmps
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endcase
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endcase
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end
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end
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// destination
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// destination
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casex(opcode)
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casex(opcode)
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8'h1e, 8'h1f: begin dest_reg = postbyte0[3:0]; path_left_addr = postbyte0[7:4]; path_right_addr = postbyte0[3:0]; end // tfr, exg
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8'h30: dest_reg = `RN_IX;
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8'h30: dest_reg = `RN_IX;
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8'h31: dest_reg = `RN_IY;
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8'h31: dest_reg = `RN_IY;
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8'h32: dest_reg = `RN_S;
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8'h32: dest_reg = `RN_S;
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8'h33: dest_reg = `RN_U;
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8'h33: dest_reg = `RN_U;
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8'h39: dest_reg = `RN_PC; // rts
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8'h39: dest_reg = `RN_PC; // rts
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| Line 154... |
Line 155... |
8'h0x: begin mode = `DIRECT; end
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8'h0x: begin mode = `DIRECT; end
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8'h12, 8'h13, 8'h19: mode = `INHERENT;
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8'h12, 8'h13, 8'h19: mode = `INHERENT;
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8'h14, 8'h15, 8'h18, 8'h1b: mode = `NONE; // undefined opcodes
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8'h14, 8'h15, 8'h18, 8'h1b: mode = `NONE; // undefined opcodes
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8'h16: mode = `REL16;
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8'h16: mode = `REL16;
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8'h17: begin mode = `REL16; optype = `OP_JSR; end
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8'h17: begin mode = `REL16; optype = `OP_JSR; end
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8'h1a, 8'h1c, 8'h1d, 8'h1e, 8'h1f: mode = `IMMEDIATE; // handled in ALU ORCC, ANDCC, SEX, EXG, TFR
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8'h1a, 8'h1c, 8'h1d, 8'h1e, 8'h1f: mode = `IMMEDIATE; // handled in ALU ORCC, ANDCC, SEX
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8'h2x: mode = `REL8;
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8'h2x: mode = `REL8;
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8'h30, 8'h31, 8'h32, 8'h33: begin mode = `INDEXED; optype = `OP_LEA; end
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8'h30, 8'h31, 8'h32, 8'h33: begin mode = `INDEXED; optype = `OP_LEA; end
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8'h34: begin optype = `OP_PUSH; mode = `NONE; end
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8'h34: begin optype = `OP_PUSH; mode = `NONE; end
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8'h35: begin optype = `OP_PULL; mode = `NONE; end
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8'h35: begin optype = `OP_PULL; mode = `NONE; end
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