Au, acabat

abrir_armarios_extendido.py

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+#!/usr/bin/env python3
+import sys
+
+# Rango del checksum
+desp = 0x2000
+numBytes = 0x2000
+firstByte = desp + 0x200
+lastByte = desp + numBytes - 1
+checksum1 = desp + 0x270
+checksum2 = desp + 0x271
+
+# Rango ampliado de armarios
+ARM_START = 0x02920
+ARM_END   = 0x0293F
+
+# Armario que quieres dejar cerrado
+TARGET_BYTE = 0x02934
+TARGET_BIT  = 0x80  # bit 7
+
+def calc_checksum(buffer):
+    total = 0
+    for i in range(firstByte, lastByte + 1):
+        if i not in (checksum1, checksum2):
+            total += buffer[i]
+    total += 3328
+    buffer[checksum1] = total % 256
+    buffer[checksum2] = (total >> 8) % 256
+
+if len(sys.argv) != 3:
+    print("Uso: python3 abrir_armarios_extendido.py save_in.srm save_out.srm")
+    sys.exit(1)
+
+infile = sys.argv[1]
+outfile = sys.argv[2]
+
+with open(infile, "rb") as f:
+    buf = bytearray(f.read())
+
+# Abrir todos los armarios del rango ampliado
+for off in range(ARM_START, ARM_END + 1):
+    buf[off] = 0xFF
+
+# Cerrar solo el armario objetivo
+buf[TARGET_BYTE] &= ~TARGET_BIT  # FF sin el bit 7 → 7E
+
+# Recalcular checksum
+calc_checksum(buf)
+
+with open(outfile, "wb") as f:
+    f.write(buf)
+
+print("Hecho:", outfile)