Adds a couple LEA unit tests for 16bit addressing mode

unittests/32Bit_ASM/Primary/Primary_8D.asm

@@ -0,0 +1,43 @@
+%ifdef CONFIG
+{
+  "RegData": {
+    "RAX": "0x4000",
+    "RBX": "0x4000",
+    "RCX": "0x8000",
+    "RDX": "0x9000",
+    "RSI": "0x7FC0",
+    "RSP": "0xFFFF7FC0",
+    "RBP": "0x1"
+  },
+  "Mode": "32BIT"
+}
+%endif
+
+mov eax, 0
+mov ebx, 0
+mov esp, -1
+
+; Specific encoded `lea ax, [0x4000]`
+; Operand size override and address size override
+; Nasm doesn't seem to emit this at all
+db 0x67, 0x66, 0x8d, 0x06, 0x00, 0x40
+
+lea bx, [0xC000]
+lea si, [0x4001]
+
+mov ebp, 0
+; Try to LEA past the 16bits
+lea ebp, [bx + si]
+
+lea bx, [0x4000]
+lea si, [0x4000]
+
+; Address size override and Operand size overrides
+lea cx, [bx + si]
+lea dx, [bx + si + 0x1000]
+lea sp, [bx + si - 64]
+
+; Address size override without operand size override
+lea esi, [bx + si - 64]
+
+hlt