feat: Add command STAX

command_model.py

@@ -122,6 +122,20 @@ def store_accumulator(self, args: tuple) -> None:
             f"{hex_to_simple(address)} ->" f" {hex_to_simple(self.state.accumulator)}"
         )
 
+    def store_accumulator_to_register_pair(self, args: tuple) -> None:
+        """
+        Store accumulator to register pair
+        """
+        logger.debug(f"STAX: {args}")
+        register = args[0]
+        REG1, REG2 = REGISTER_PAIRS[register]
+        mem_addr = self.state.get_mem_addr_register_pair(register)
+        self.state.memory[mem_addr] = self.state.accumulator
+        logger.debug(f"Stored from ACCUMULATOR: {self.state.accumulator} to {mem_addr}")
+        print(
+            f"{REG1}{REG2} [{mem_addr}] -> {hex_to_simple(self.state.accumulator)} [From A]"
+        )
+
     def add(self, args: tuple) -> None:
         """
         Add value from register to accumulator

data.py

@@ -125,6 +125,11 @@
         "function": "load_accumulator_from_register_pair",
         "parameters": {"register_pair": {k: REGISTER_PAIRS[k] for k in ("B", "D")}},
     },
+    "STAX": {
+        "description": "Store accumulator to register pair",
+        "function": "store_accumulator_to_register_pair",
+        "parameters": {"register_pair": {k: REGISTER_PAIRS[k] for k in ("B", "D")}},
+    },
     "INX": {
         "description": "Incremented xtended register pairs",
         "function": "increment_extended_register",

usage_examples.org

@@ -338,17 +338,35 @@ Flags:
 : HL -> 0x1261 [0x1260 + 0x01]
 : HL -> 0x1260 [0x1261 - 0x01]
 
+** STAX
+We move data to M for writing value/data to xtended HL register
+For other we have to manually store the value from accumulator to xtended register pair
+#+begin_src 8085 :args -db /tmp/8085-session1 :exports both
+          LXI D 1260H             ; DE -> 1260H
+          MVI A 0aH               ; A -> 0aH
+          STAX D                  ; DE [1260] now contains 0aH
+#+end_src
+
+#+RESULTS:
+: DE -> 0x1260 [D -> 0x12 E -> 0x60]
+: A -> 0AH
+: DE [0x1260] -> 0AH [From A]
+
 ** LDAX
 We refer to M for the value/data stored in xtended HL register
 For other we have to manually load the value to Accumulator
 #+begin_src 8085 :args -db /tmp/8085-session1 :exports both
-LXI D 1260H ; [1260H] contains value 05A
-LDAX D ; It puts that value to A
+          MVI A 00H               ; reset A to 0H
+          LXI D 1260H             ; [1260H] contains value 0aH
+          LDAX D                  ; It puts that value to A
+          OUT A
 #+end_src
 
 #+RESULTS:
+: A -> 00H
 : DE -> 0x1260 [D -> 0x12 E -> 0x60]
-: A -> 05H  ; FROM DE -> [0x1260]
+: A -> 0AH  ; FROM DE -> [0x1260]
+: A: 0AH
 
 * Practice Problems
 ** Register setup from 1260 to 1264