Update to v104r16 release.

byuu says:

Changelog:

  - processor/upd96050: always potentially update S1 on ALU ops, sans NOP
      - theory by Lord Nightmare. I'm impartial on this one, but may as
        well match his design
  - sfc: fixed save state hang [reported by FitzRoy; fixed by Cydrak]
  - icarus: do not save settings.bml file when in library mode

higan/emulator/emulator.hpp

@@ -12,7 +12,7 @@ using namespace nall;
 
 namespace Emulator {
   static const string Name    = "higan";
-  static const string Version = "104.15";
+  static const string Version = "104.16";
   static const string Author  = "byuu";
   static const string License = "GPLv3";
   static const string Website = "https://byuu.org/";

higan/processor/upd96050/instructions.cpp

@@ -79,6 +79,7 @@ auto uPD96050::execOP(uint24 opcode) -> void {
 
     flag.z = r == 0;
     flag.s0 = r & 0x8000;
+    if(!flag.ov1) flag.s1 = flag.s0;
 
     switch(alu) {
 
@@ -110,7 +111,6 @@ auto uPD96050::execOP(uint24 opcode) -> void {
         flag.ov0 = (q ^ r) &  (q ^ p) & 0x8000;
         flag.c = r > q;
       }
-      if(!flag.ov1) flag.s1 = flag.s0;
       flag.ov1 = flag.ov0 & flag.ov1 ? flag.s0 == flag.s1 : flag.ov0 | flag.ov1;
       break;
     }

higan/sfc/coprocessor/superfx/memory.cpp

@@ -3,6 +3,7 @@ auto SuperFX::read(uint24 addr, uint8 data) -> uint8 {
     while(!regs.scmr.ron) {
       step(6);
       synchronize(cpu);
+      if(scheduler.synchronizing()) break;
     }
     return rom.read((((addr & 0x3f0000) >> 1) | (addr & 0x7fff)) & romMask);
   }
@@ -11,6 +12,7 @@ auto SuperFX::read(uint24 addr, uint8 data) -> uint8 {
     while(!regs.scmr.ron) {
       step(6);
       synchronize(cpu);
+      if(scheduler.synchronizing()) break;
     }
     return rom.read(addr & romMask);
   }
@@ -19,6 +21,7 @@ auto SuperFX::read(uint24 addr, uint8 data) -> uint8 {
     while(!regs.scmr.ran) {
       step(6);
       synchronize(cpu);
+      if(scheduler.synchronizing()) break;
     }
     return ram.read(addr & ramMask);
   }
@@ -31,6 +34,7 @@ auto SuperFX::write(uint24 addr, uint8 data) -> void {
     while(!regs.scmr.ran) {
       step(6);
       synchronize(cpu);
+      if(scheduler.synchronizing()) break;
     }
     return ram.write(addr & ramMask, data);
   }

icarus/icarus.cpp

@@ -127,6 +127,7 @@ auto nall::main(string_vector args) -> void {
   #endif
   scanDialog->show();
   Application::run();
+  settings.save();
 }
 
 #endif

icarus/settings.cpp

@@ -1,6 +1,6 @@
 struct Settings : Markup::Node {
   Settings();
-  ~Settings();
+  auto save() -> void;
 };
 
 Settings::Settings() {
@@ -19,6 +19,6 @@ Settings::Settings() {
   set("icarus/UseHeuristics", true);
 }
 
-Settings::~Settings() {
+auto Settings::save() -> void {
   file::write(locate("settings.bml"), BML::serialize(*this));
 }