there might be an off by 1 error...

core/broadway.hpp

@@ -17,7 +17,7 @@ struct broadway {
     void execute(ircolib::u32, mem &);
 
     bool disasm_available = true;
-    ircolib::u32 pc = 0, lr = 0, ctr = 0, cr = 0, srr0;
+    ircolib::u32 pc = 0, lr = 0, ctr = 0, cr = 0, srr0 = 0, fpscr = 0, msr = 0;
     union {
         struct {
             unsigned bytecount : 7;
@@ -43,7 +43,13 @@ struct broadway {
 
     std::array<ircolib::u32, 16> ibat, dbat;
     std::array<ircolib::u32, 32> gpr{};
-    std::array<double, 32> fpr{};
+
+    struct Fgr {
+        ircolib::u64 ps0, ps1;
+    };
+
+    std::array<Fgr, 32> fgrs{};
+
     // ircolib::u32 const_gpr_lookup{};
     csh capstone;
     // Xbyak::CodeGenerator code;
@@ -51,6 +57,7 @@ struct broadway {
     // instructions
     void decode_special1(ircolib::u32, mem &);
     void decode_special2(ircolib::u32, mem &);
+    void decode_special3(ircolib::u32, mem &);
 
     void branch(bool, bool, ircolib::u32);
     bool test_cond_and_ctr(ircolib::u32);
@@ -66,14 +73,25 @@ struct broadway {
     void mftspr(bool, ircolib::u32);
     void stw(ircolib::u32, mem &);
     void stwu(ircolib::u32, mem &);
+    void stbu(ircolib::u32, mem &);
     void sth(ircolib::u32, mem &);
     void lwz(ircolib::u32, mem &);
     void lfd(ircolib::u32, mem &);
     void bclrx(ircolib::u32);
     void cmpi(ircolib::u32);
+    void cmpli(ircolib::u32);
+    void cmp(ircolib::u32);
+    void cmpl(ircolib::u32);
     void rlwinm(ircolib::u32);
     void lwzu(ircolib::u32, mem &);
     void rfi(ircolib::u32);
+    void mtfsf(ircolib::u32);
+    void mtfsb1(ircolib::u32);
+    void mtfsb0(ircolib::u32);
+    void mfmsr(ircolib::u32);
+    void nand(ircolib::u32);
+    void subf(ircolib::u32);
+    void or (ircolib::u32);
 
     inline void cr0_update(bool condition, ircolib::s32 result) {
         if (condition) {
@@ -84,5 +102,12 @@ struct broadway {
             set_cr((b0 << 3) | (b1 << 2) | (b2 << 1) | (b3 << 0), 0);
         }
     }
+
+    inline void cr1_update(bool condition) {
+        if (condition) {
+            const ircolib::u8 field = (fpscr >> 28) & 0xf;
+            set_cr(field, 1);
+        }
+    }
 };
 } // namespace weee::core