Added resistor component with 3 different simulation model including Verilog-A

mrModels/mr_pas_r/schematic/master.tag

@@ -0,0 +1,2 @@
+-- Master.tag File, Rev:1.0
+sch.oa

mrModels/mr_pas_r/schematic_parasitic/master.tag

@@ -0,0 +1,2 @@
+-- Master.tag File, Rev:1.0
+sch.oa

mrModels/mr_pas_r/schematic_veriloga/master.tag

@@ -0,0 +1,2 @@
+-- Master.tag File, Rev:1.0
+sch.oa

mrModels/mr_pas_r/symbol/master.tag

@@ -0,0 +1,2 @@
+-- Master.tag File, Rev:1.0
+symbol.oa

mrModels/mr_pas_r_va/symbol/master.tag

@@ -0,0 +1,2 @@
+-- Master.tag File, Rev:1.0
+symbol.oa

mrModels/mr_pas_r_va/veriloga/master.tag

@@ -0,0 +1,2 @@
+-- Master.tag File, Rev:1.0
+veriloga.va

mrModels/mr_pas_r_va/veriloga/veriloga.va

@@ -0,0 +1,43 @@
+// VerilogA for mrModels, mr_pas_r_va, veriloga
+
+`include "constants.vams"
+`include "disciplines.vams"
+
+module mr_pas_r_va(P1, P2);
+    inout P1, P2;
+    electrical P1, P2;
+
+    // =================================== Parameters ===================================
+    parameter real R = 1000.0 from (0:inf); // Resistance in Ohms
+    parameter real TC1 = 0.0;               // Linear temperature coefficient (1/°C)
+    parameter real TC2 = 0.0;               // Quadratic temperature coefficient (1/°C²)
+
+    // ======== Flicker (1/f) noise parameters (optional - set Kf=0 to disable) =========
+    parameter real Kf = 0.0;                // Flicker noise coefficient (1e-11 to 1e-9)
+    parameter real Af = 1.0;                // Flicker noise exponent (usually 1.0)    
+
+    real R_eff;                             // Effective resistance after temp coeff
+    real T;                                 // Temperature in Kelvin
+
+    analog begin
+        T = $temperature;                   // Get simulation temperature (Kelvin)
+
+        // Effective resistance with temperature dependence
+        R_eff = R * (1 + TC1*(T - 300.15) + TC2*(T - 300.15)*(T - 300.15));
+
+        // Ohm's law
+        V(P1, P2) <+ R_eff * I(P1, P2);
+
+        // ============================ Thermal (white) noise ===========================
+        // Correct formula: voltage noise power = 4 * k * T * R
+        V(P1, P2) <+ white_noise(4 * `P_K * T * R_eff, "thermal");
+
+        // ======================== Optional flicker (1/f) noise ========================
+        // Excess noise that appears in some real resistors (carbon, thick film, etc.)
+        if (Kf > 0) begin
+            // Current noise contribution (common way to model resistor excess noise)
+            V(P1, P2) <+ flicker_noise(Kf * pow(abs(I(P1,P2)), Af), 1.0, "excess");
+        end
+    end
+    
+endmodule