步骤A：isa+toml 新增 RS_OFF 形态（LOAD_PTR/STORE_PTR，0010 前缀 op=8/9）+ 强校验放行 + isa_test roundtrip

compiler/machine.toml

@@ -669,6 +669,24 @@ func = "full"
 params = ["slot", "off", "rs"]
 enabled = true
 
+[[op]]
+name = "LOAD_PTR"
+prefix = "0010"
+op = 8
+fmt = "RS+off"
+func = "full"
+params = ["rd", "rs", "off"]
+enabled = true
+
+[[op]]
+name = "STORE_PTR"
+prefix = "0010"
+op = 9
+fmt = "RS+off"
+func = "full"
+params = ["rd", "rs", "off"]
+enabled = true
+
 [[op]]
 name = "STR_LEN"
 prefix = "0010"

compiler/src/MachineConfig.cpp

@@ -89,6 +89,7 @@ namespace {
         if (fmt == "CALL") return 1;
         if (fmt == "CAL") return 2;
         if (fmt == "SLOT+off") return 3;
+        if (fmt == "RS+off") return 3;
         if (fmt == "IMM64") return 2;
         if (fmt == "预留") return 0;
         return -1;
@@ -132,7 +133,7 @@ namespace {
         if (prefix == "010011") return "JC";
         if (prefix == "010100") return "CALL";
         if (prefix == "010101") return "CAL";
-        if (prefix == "0010") return "SLOT+off";
+        if (prefix == "0010") return "SLOT+off";  // 或 RS+off（LOAD_PTR/STORE_PTR）
         if (prefix == "0011") return "IMM64";
         if (prefix == "0001") return "预留";
         return "";
@@ -392,9 +393,12 @@ bool MachineConfig::load(const std::string& path, std::string* err) {
                 fail(err, "op '" + op.name + "': bad prefix '" + op.prefix + "'");
                 return false;
             }
-            // prefix ↔ fmt 互锁
+            // prefix ↔ fmt 互锁（0010 允许 SLOT+off 与 RS+off 两种形态）
             const char* want_fmt = fmt_of_prefix(op.prefix);
-            if (want_fmt == nullptr || op.fmt != want_fmt) {
+            const bool ok_fmt =
+                op.fmt == want_fmt ||
+                (op.prefix == "0010" && op.fmt == "RS+off");
+            if (!ok_fmt) {
                 fail(err, "op '" + op.name + "': prefix '" + op.prefix +
                               "' must pair with fmt '" + std::string(want_fmt ? want_fmt : "?") + "'");
                 return false;