diff --git a/BizHawk.MultiClient/tools/RamSearch.cs b/BizHawk.MultiClient/tools/RamSearch.cs
index 670d1b4543..72cb3cfec0 100644
--- a/BizHawk.MultiClient/tools/RamSearch.cs
+++ b/BizHawk.MultiClient/tools/RamSearch.cs
@@ -764,10 +764,23 @@ namespace BizHawk.MultiClient
         private int GetSpecificValue()
         {
             if (SpecificValueBox.Text == "") return 0;
-            bool i = InputValidate.IsValidSignedNumber(SpecificValueBox.Text);
-            if (!i) return -1;
-
-            return int.Parse(SpecificValueBox.Text);
+            bool i = false;
+            switch (GetDataType())
+            {
+                case asigned.UNSIGNED:
+                    i = InputValidate.IsValidUnsignedNumber(SpecificValueBox.Text);
+                    if (!i) return -1;
+                    return int.Parse(SpecificValueBox.Text);
+                case asigned.SIGNED:
+                    i = InputValidate.IsValidSignedNumber(SpecificValueBox.Text);
+                    if (!i) return -1;
+                    return int.Parse(SpecificValueBox.Text);
+                case asigned.HEX:
+                    i = InputValidate.IsValidHexNumber(SpecificValueBox.Text);
+                    if (!i) return -1;
+                    return int.Parse(SpecificValueBox.Text, NumberStyles.HexNumber);
+            }
+            return -1;
         }
 
         private int GetSpecificAddress()
@@ -1412,8 +1425,22 @@ namespace BizHawk.MultiClient
         {
             if (e.KeyChar == '\b') return;
 
-            if (!InputValidate.IsValidUnsignedNumber(e.KeyChar))
-                e.Handled = true;
+            switch (GetDataType())
+            {
+                case asigned.UNSIGNED:
+                    if (!InputValidate.IsValidUnsignedNumber(e.KeyChar))
+                        e.Handled = true;
+                    break;
+                case asigned.SIGNED:
+                    if (!InputValidate.IsValidSignedNumber(e.KeyChar))
+                        e.Handled = true;
+                    break;
+                case asigned.HEX:
+                    if (!InputValidate.IsValidHexNumber(e.KeyChar))
+                        e.Handled = true;
+                    break;
+            }
+            
         }
 
         private void SpecificAddressBox_KeyPress(object sender, KeyPressEventArgs e)
diff --git a/BizHawk.Util/InputValidate.cs b/BizHawk.Util/InputValidate.cs
index a21a4c6b41..c455d22e06 100644
--- a/BizHawk.Util/InputValidate.cs
+++ b/BizHawk.Util/InputValidate.cs
@@ -93,12 +93,18 @@ namespace BizHawk
                 byte[] bc = AE.GetBytes(input[x].ToString());
 
                 // Determine if the ASCII code is within the valid range of numerical values.
-                if (bc[0] < 47)
+                if (bc[0] < 47) //0
                     return false;
-                if (bc[0] > 58)
+                if (bc[0] > 58) //9
                 {
-                    if (bc[0] < 65 || bc[0] > 70) //A-F capital letters only!
+                    if (bc[0] < 65) //A
                         return false;
+
+                    if (bc[0] > 70) //F
+                    {
+                        if (bc[0] < 97 || bc[0] > 102) //a-f
+                            return false;
+                    }
                 }
             }
             return true;