Update to v093r09 release.

byuu says:

Changelog:
- GB/C OAM DMA now runs in parallel with the CPU
- CPU can only access HRAM during OAM DMA
- fixed SGB mode again
- brand new config files will default to the optimal drivers now
  (OpenGL, etc) instead of the safest
- hopefully fixed remaining Windows UI issues

emulator/emulator.hpp

@@ -3,7 +3,7 @@
 
 namespace Emulator {
   static const char Name[] = "higan";
-  static const char Version[] = "093.08";
+  static const char Version[] = "093.09";
   static const char Author[] = "byuu";
   static const char License[] = "GPLv3";
   static const char Website[] = "http://byuu.org/";

gb/cpu/cpu.cpp

@@ -200,6 +200,10 @@ void CPU::power() {
   status.interrupt_enable_timer = 0;
   status.interrupt_enable_stat = 0;
   status.interrupt_enable_vblank = 0;
+
+  oamdma.active = false;
+  oamdma.bank = 0;
+  oamdma.offset = 0;
 }
 
 }

gb/cpu/cpu.hpp

@@ -79,6 +79,12 @@ struct CPU : Processor::LR35902, Thread, MMIO {
     bool interrupt_enable_vblank;
   } status;
 
+  struct OAMDMA {
+    bool active;
+    uint8 bank;
+    uint8 offset;
+  } oamdma;
+
   uint8 wram[32768];  //GB=8192, GBC=32768
   uint8 hram[128];
 

gb/cpu/memory.cpp

@@ -7,15 +7,16 @@ void CPU::op_io() {
 
 uint8 CPU::op_read(uint16 addr) {
   cycle_edge();
-  uint8 r = bus.read(addr);
   add_clocks(4);
-  return r;
+  if(oamdma.active) return hram[addr & 0x7f];
+  return bus.read(addr);
 }
 
 void CPU::op_write(uint16 addr, uint8 data) {
   cycle_edge();
-  bus.write(addr, data);
   add_clocks(4);
+  if(oamdma.active) hram[addr & 0x7f] = data;
+  else bus.write(addr, data);
 }
 
 void CPU::cycle_edge() {

gb/cpu/mmio.cpp

@@ -186,10 +186,9 @@ void CPU::mmio_write(uint16 addr, uint8 data) {
   }
 
   if(addr == 0xff46) {  //DMA
-    for(unsigned n = 0x00; n <= 0x9f; n++) {
-      bus.write(0xfe00 + n, bus.read((data << 8) + n));
-      add_clocks(4);
-    }
+    oamdma.active = true;
+    oamdma.bank = data;
+    oamdma.offset = 0;
     return;
   }
 

gb/cpu/serialization.cpp

@@ -55,6 +55,10 @@ void CPU::serialize(serializer& s) {
   s.integer(status.interrupt_enable_timer);
   s.integer(status.interrupt_enable_stat);
   s.integer(status.interrupt_enable_vblank);
+
+  s.integer(oamdma.active);
+  s.integer(oamdma.bank);
+  s.integer(oamdma.offset);
 }
 
 #endif

gb/cpu/timing.cpp

@@ -5,6 +5,16 @@
 #ifdef CPU_CPP
 
 void CPU::add_clocks(unsigned clocks) {
+  if(oamdma.active) {
+    for(unsigned n = 0; n < clocks; n++) {
+      bus.write(0xfe00 + oamdma.offset, bus.read((oamdma.bank << 8) + oamdma.offset));
+      if(++oamdma.offset == 160) {
+        oamdma.active = false;
+        break;
+      }
+    }
+  }
+
   system.clocks_executed += clocks;
   if(system.sgb()) scheduler.exit(Scheduler::ExitReason::StepEvent);
 

gb/ppu/ppu.cpp

@@ -66,6 +66,7 @@ void PPU::scanline() {
   if(++status.ly == 154) frame();
 
   if(status.ly < 144) {
+    interface->lcdScanline();  //Super Game Boy rendering notification
     system.cgb() ? cgb_scanline() : dmg_scanline();
   }
 
@@ -80,8 +81,6 @@ void PPU::scanline() {
 }
 
 void PPU::frame() {
-  cpu.mmio_joyp_poll();
-
   status.ly = 0;
   scheduler.exit(Scheduler::ExitReason::FrameEvent);
 }

phoenix/core/core.cpp

@@ -1491,6 +1491,8 @@ void ListView::remove(unsigned selection) {
 void ListView::reset() {
   state.checked.reset();
   state.image.reset();
+  state.selected = false;
+  state.selection = 0;
   state.text.reset();
   return p.reset();
 }

target-ethos/configuration/configuration.cpp

@@ -2,7 +2,7 @@
 ConfigurationSettings* config = nullptr;
 
 ConfigurationSettings::ConfigurationSettings() {
-  video.append(video.driver = ruby::video.safestDriver(), "Driver");
+  video.append(video.driver = ruby::video.optimalDriver(), "Driver");
   video.append(video.synchronize = false, "Synchronize");
   video.append(video.shader = "Blur", "Shader");
   video.append(video.scaleMode = 0, "ScaleMode");
@@ -18,7 +18,7 @@ ConfigurationSettings::ConfigurationSettings() {
   video.append(video.startFullScreen = false, "StartFullScreen");
   append(video, "Video");
 
-  audio.append(audio.driver = ruby::audio.safestDriver(), "Driver");
+  audio.append(audio.driver = ruby::audio.optimalDriver(), "Driver");
   audio.append(audio.synchronize = true, "Synchronize");
   audio.append(audio.frequency = 48000, "Frequency");
   audio.append(audio.latency = 60, "Latency");
@@ -27,7 +27,7 @@ ConfigurationSettings::ConfigurationSettings() {
   audio.append(audio.mute = false, "Mute");
   append(audio, "Audio");
 
-  input.append(input.driver = ruby::input.safestDriver(), "Driver");
+  input.append(input.driver = ruby::input.optimalDriver(), "Driver");
   input.focus.append(input.focus.pause = false, "Pause");
   input.focus.append(input.focus.allow = false, "AllowInput");
   input.append(input.focus, "Focus");

target-ethos/general/library.cpp

@@ -203,7 +203,7 @@ string LibraryManager::load(const string& type) {
         show();
         setModal();
         slotLoad = false;
-        browser->mediaMode.setSelection(0);
+        browser->mediaMode.setSelection(config->library.mediaMode = 0);
         return loadPathname;
       }
       mode++;
@@ -287,7 +287,10 @@ void LibraryManager::synchronize() {
     if(requestedLoadType.empty()) {
       loadButton.setEnabled(media.bootable);
     } else {
-      loadButton.setEnabled(requestedLoadType == media.type);
+      bool enabled = (requestedLoadType == media.type);
+      //allow Super Game Boy to load Game Boy Color games
+      if(requestedLoadType == "gb" && loaded.size() == 1 && media.type == "gbc") enabled = true;
+      loadButton.setEnabled(enabled);
     }
   } else {
     loadButton.setEnabled(false);