Improved assembler performance

src/asm/MemoryNumber.go

@@ -17,9 +17,12 @@ func (data *MemoryNumber) String() string {
 func (a *Assembler) MemoryNumber(mnemonic Mnemonic, address Memory, number int) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &MemoryNumber{
-			Address: address,
-			Number:  number,
-		},
+		Type:     TypeMemoryNumber,
+		Index:    Index(len(a.Param.MemoryNumber)),
+	})
+
+	a.Param.MemoryNumber = append(a.Param.MemoryNumber, MemoryNumber{
+		Address: address,
+		Number:  number,
 	})
 }