Merge 22526f587c into 0c45a8a8ab

HISTORY.txt

@@ -58,9 +58,10 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
 * fixed byte access to font data registers
 * fixed memory mode register bits masking when read from MAIN-CPU and SUB-CPU (verified on real hardware, cf. Krikzz's mcd-verificator)
 * fixed pending level 1 interrupts when GFX interrupt is disabled (fixes random freezes when exiting "Batman Returns" option menu)
-* fixed CDD seek command again (Final Fight CD freeze with model 2 BIOS)
+* fixed CDD seek command again (fixes Final Fight CD freeze with model 2 BIOS)
 * fixed CDD status reported during seek/access time (fixes sound effect synchronization issue in Bari Arm)
 * fixed CDD position reset when disc is stopped (fixes random freezes in Spiderman vs Kingpin when switching between audio tracks)
+* fixed CDD seeking start delay (fixes Radical Rex incorrect PRG-RAM & Word-RAM initialization, causing missing sprites during intro) */
 * fixed word access to CDD control register (fixes spurious audio track playback on startup with Mode 1 patched games using MSU-MD driver)
 * fixed CD communication registers state on peripheral reset (fixes SUB-CPU side initialization in MSU-MD sample demo and some Mode 1 patched games using MSU-MD driver)
 * fixed 32x32 pixels stamp index masking during GFX operation (fixes graphics rotation/scaling effects in "Chuck Rock II - Son of Chuck")

core/cart_hw/md_cart.c

@@ -2,7 +2,7 @@
  *  Genesis Plus
  *  Mega Drive cartridge hardware support
  *
- *  Copyright (C) 2007-2023  Eke-Eke (Genesis Plus GX)
+ *  Copyright (C) 2007-2024  Eke-Eke (Genesis Plus GX)
  *
  *  Many cartridge protections were initially documented by Haze
  *  (http://haze.mameworld.info/)
@@ -465,7 +465,10 @@ void md_cart_init(void)
   memset(&cart.hw, 0, sizeof(cart.hw));
 
   /* initialize default $200000-$20ffff mapping (for games using SRAM & ROM bankswitching) */
-  cart.hw.regs[0] = (0x200000 & cart.mask) >> 16;
+  if (m68k.memory_map[0x20].base == sram.sram)
+  {
+    cart.hw.regs[0] = (0x200000 & cart.mask) >> 16;
+  }
 
   /* search for game into database */
   for (i=0; i<(sizeof(rom_database)/sizeof(md_entry_t)); i++)

core/cart_hw/md_cart.h

@@ -2,7 +2,7 @@
  *  Genesis Plus
  *  Mega Drive cartridge hardware support
  *
- *  Copyright (C) 2007-2023  Eke-Eke (Genesis Plus GX)
+ *  Copyright (C) 2007-2024  Eke-Eke (Genesis Plus GX)
  *
  *  Most cartridge protections were initially documented by Haze
  *  (http://haze.mameworld.info/)

core/cd_hw/cdd.c

@@ -1893,6 +1893,79 @@ void cdd_update(void)
     /* udpate current track index */
     cdd.index = index;
   }
+
+  /* seeking should start with at least one interrupt delay (fixes Radical Rex incorrect PRG-RAM & Word-RAM initialization, causing missing sprites during intro) */
+  if (scd.regs[0x38>>1].byte.h == CD_SEEK)
+  {
+    /* reset track index */
+    int index = 0;
+
+    /* new LBA position */
+    int lba = ((scd.regs[0x44>>1].byte.h * 10 + scd.regs[0x44>>1].byte.l) * 60 + 
+               (scd.regs[0x46>>1].byte.h * 10 + scd.regs[0x46>>1].byte.l)) * 75 +
+               (scd.regs[0x48>>1].byte.h * 10 + scd.regs[0x48>>1].byte.l) - 150;
+
+    /* CD drive latency */
+    if (!cdd.latency)
+    {
+      /* Fixes a few games hanging because they expect data to be read with some delay */
+      /* Wolf Team games (Annet Futatabi, Aisle Lord, Cobra Command, Earnest Evans, Road Avenger & Time Gal) need at least 11 interrupts delay  */
+      /* Space Adventure Cobra (2nd morgue scene) needs at least 13 interrupts delay (incl. seek time, so 11 is OK) */
+      /* By default, at least two interrupts latency is required by current emulation model (BIOS hangs otherwise) */
+      cdd.latency = 2 + 9*config.cd_latency;
+    }
+
+    /* CD drive seek time */
+    /* max. seek time = 1.5 s = 1.5 x 75 = 112.5 CDD interrupts (rounded to 120) for 270000 sectors max on disc. */
+    /* Note: This is only a rough approximation since, on real hardware, seek time is much likely not linear and */
+    /* latency much larger than above value, but this model works fine for Sonic CD (track 26 playback needs to  */
+    /* be enough delayed to start in sync with intro sequence, as compared with real hardware recording).        */
+    /* It also works fine for Switch/Panic! intro (at least 30 interrupts are needed while seeking from 00:05:63 */
+    /* to 24:03:19 in Switch or when seeking from 00:05:60 to 24:06:07 in Panic!). */
+    if (lba > cdd.lba)
+    {
+      cdd.latency += (((lba - cdd.lba) * 120 * config.cd_latency) / 270000);
+    }
+    else 
+    {
+      cdd.latency += (((cdd.lba - lba) * 120 * config.cd_latency) / 270000);
+    }
+
+    /* update current LBA */
+    cdd.lba = lba;
+
+    /* get track index */
+    while ((cdd.toc.tracks[index].end <= lba) && (index < cdd.toc.last))
+      index++;
+
+    /* audio track ? */
+    if (cdd.toc.tracks[index].type == TYPE_AUDIO)
+    {
+      /* stay within track limits when seeking files */
+      if (lba < cdd.toc.tracks[index].start) 
+      {
+        lba = cdd.toc.tracks[index].start;
+      }
+
+      /* seek to current track sector */
+      cdd_seek_audio(index, lba);
+    }
+
+    /* update current track index */
+    cdd.index = index;
+
+    /* seek to current subcode position */
+    if (cdd.toc.sub)
+    {
+      cdStreamSeek(cdd.toc.sub, lba * 96, SEEK_SET);
+    }
+
+    /* no audio track playing (yet) */
+    scd.regs[0x36>>1].byte.h = 0x01;
+
+    /* update CDD status to either PLAY or PAUSE depending on host command (will be reported to host once seeking has ended) */
+    cdd.status = scd.regs[0x42>>1].byte.h & 0x05;
+  }
 }
 
 void cdd_process(void)
@@ -2069,73 +2142,7 @@ void cdd_process(void)
 
     case 0x03:  /* Play */
     {
-      /* reset track index */
+      /* RS0 should indicate seeking until drive is ready (fixes audio delay in Bari Arm) */
-      int index = 0;
-
-      /* new LBA position */
-      int lba = ((scd.regs[0x44>>1].byte.h * 10 + scd.regs[0x44>>1].byte.l) * 60 + 
-                 (scd.regs[0x46>>1].byte.h * 10 + scd.regs[0x46>>1].byte.l)) * 75 +
-                 (scd.regs[0x48>>1].byte.h * 10 + scd.regs[0x48>>1].byte.l) - 150;
-
-      /* CD drive latency */
-      if (!cdd.latency)
-      {
-        /* Fixes a few games hanging because they expect data to be read with some delay */
-        /* Wolf Team games (Annet Futatabi, Aisle Lord, Cobra Command, Earnest Evans, Road Avenger & Time Gal) need at least 11 interrupts delay  */
-        /* Space Adventure Cobra (2nd morgue scene) needs at least 13 interrupts delay (incl. seek time, so 11 is OK) */
-        /* By default, at least two interrupts latency is required by current emulation model (BIOS hangs otherwise) */
-        cdd.latency = 2 + 9*config.cd_latency;
-      }
-
-      /* CD drive seek time */
-      /* max. seek time = 1.5 s = 1.5 x 75 = 112.5 CDD interrupts (rounded to 120) for 270000 sectors max on disc. */
-      /* Note: This is only a rough approximation since, on real hardware, seek time is much likely not linear and */
-      /* latency much larger than above value, but this model works fine for Sonic CD (track 26 playback needs to  */
-      /* be enough delayed to start in sync with intro sequence, as compared with real hardware recording).        */
-      if (lba > cdd.lba)
-      {
-        cdd.latency += (((lba - cdd.lba) * 120 * config.cd_latency) / 270000);
-      }
-      else 
-      {
-        cdd.latency += (((cdd.lba - lba) * 120 * config.cd_latency) / 270000);
-      }
-
-      /* update current LBA */
-      cdd.lba = lba;
-
-      /* get track index */
-      while ((cdd.toc.tracks[index].end <= lba) && (index < cdd.toc.last)) index++;
-
-      /* audio track ? */
-      if (cdd.toc.tracks[index].type == TYPE_AUDIO)
-      {
-        /* stay within track limits when seeking files */
-        if (lba < cdd.toc.tracks[index].start) 
-        {
-          lba = cdd.toc.tracks[index].start;
-        }
-
-        /* seek to current track sector */
-        cdd_seek_audio(index, lba);
-      }
-
-      /* update current track index */
-      cdd.index = index;
-
-      /* seek to current subcode position */
-      if (cdd.toc.sub)
-      {
-        cdStreamSeek(cdd.toc.sub, lba * 96, SEEK_SET);
-      }
-
-      /* no audio track playing (yet) */
-      scd.regs[0x36>>1].byte.h = 0x01;
-
-      /* update status (reported to host once seeking has ended) */
-      cdd.status = CD_PLAY;
-
-      /* RS0 should indicates seeking until drive is ready (fixes audio delay in Bari Arm) */
       /* RS1=0xf to invalidate track infos in RS2-RS8 until drive is ready (fixes Snatcher Act 2 start cutscene) */
       scd.regs[0x38>>1].w = (CD_SEEK << 8) | 0x0f;
       scd.regs[0x3a>>1].w = 0x0000;
@@ -2147,61 +2154,6 @@ void cdd_process(void)
 
     case 0x04:  /* Seek */
     {
-      /* reset track index */
-      int index = 0;
-
-      /* new LBA position */
-      int lba = ((scd.regs[0x44>>1].byte.h * 10 + scd.regs[0x44>>1].byte.l) * 60 + 
-                 (scd.regs[0x46>>1].byte.h * 10 + scd.regs[0x46>>1].byte.l)) * 75 +
-                 (scd.regs[0x48>>1].byte.h * 10 + scd.regs[0x48>>1].byte.l) - 150;
-
-      /* CD drive seek time  */
-      /* We are using similar linear model as above, although still not exactly accurate, */
-      /* it works fine for Switch/Panic! intro (Switch needs at least 30 interrupts while */
-      /* seeking from 00:05:63 to 24:03:19, Panic! when seeking from 00:05:60 to 24:06:07) */
-      if (lba > cdd.lba)
-      {
-        cdd.latency = ((lba - cdd.lba) * 120 * config.cd_latency) / 270000;
-      }
-      else
-      {
-        cdd.latency = ((cdd.lba - lba) * 120 * config.cd_latency) / 270000;
-      }
-
-      /* update current LBA */
-      cdd.lba = lba;
-
-      /* get current track index */
-      while ((cdd.toc.tracks[index].end <= lba) && (index < cdd.toc.last)) index++;
-
-      /* audio track ? */
-      if (cdd.toc.tracks[index].type == TYPE_AUDIO)
-      {
-        /* stay within track limits when seeking files */
-        if (lba < cdd.toc.tracks[index].start) 
-        {
-          lba = cdd.toc.tracks[index].start;
-        }
-
-        /* seek to current track sector */
-        cdd_seek_audio(index, lba);
-      }
-
-      /* update current track index */
-      cdd.index = index;
-
-      /* seek to current subcode position */
-      if (cdd.toc.sub)
-      {
-        cdStreamSeek(cdd.toc.sub, lba * 96, SEEK_SET);
-      }
-
-      /* no audio track playing */
-      scd.regs[0x36>>1].byte.h = 0x01;
-
-      /* update status (reported to host once seeking has ended) */
-      cdd.status = CD_PAUSE;
-
       /* RS1=0xf to invalidate track infos in RS2-RS8 while seeking (fixes Final Fight CD intro when seek time is emulated) */
       scd.regs[0x38>>1].w = (CD_SEEK << 8) | 0x0f;
       scd.regs[0x3a>>1].w = 0x0000;

core/m68k/m68kcpu.c

@@ -292,7 +292,7 @@ void m68k_run(unsigned int cycles)
 
 #ifdef HOOK_CPU
     /* Trigger execution hook */
-    if (cpu_hook)
+    if (UNLIKELY(cpu_hook))
       cpu_hook(HOOK_M68K_E, 0, REG_PC, 0);
 #endif
 

core/m68k/m68kcpu.h

@@ -859,7 +859,7 @@ INLINE uint m68ki_read_8(uint address)
   else val = READ_BYTE(temp->base, (address) & 0xffff);
 
 #ifdef HOOK_CPU
-  if (cpu_hook)
+  if (UNLIKELY(cpu_hook))
     cpu_hook(HOOK_M68K_R, 1, address, val);
 #endif
 
@@ -879,7 +879,7 @@ INLINE uint m68ki_read_16(uint address)
   else val = *(uint16 *)(temp->base + ((address) & 0xffff));
 
 #ifdef HOOK_CPU
-  if (cpu_hook)
+  if (UNLIKELY(cpu_hook))
     cpu_hook(HOOK_M68K_R, 2, address, val);
 #endif
 
@@ -899,7 +899,7 @@ INLINE uint m68ki_read_32(uint address)
   else val = m68k_read_immediate_32(address);
 
 #ifdef HOOK_CPU
-  if (cpu_hook)
+  if (UNLIKELY(cpu_hook))
     cpu_hook(HOOK_M68K_R, 4, address, val);
 #endif
 
@@ -913,7 +913,7 @@ INLINE void m68ki_write_8(uint address, uint value)
   m68ki_set_fc(FLAG_S | FUNCTION_CODE_USER_DATA) /* auto-disable (see m68kcpu.h) */
 
 #ifdef HOOK_CPU
-  if (cpu_hook)
+  if (UNLIKELY(cpu_hook))
     cpu_hook(HOOK_M68K_W, 1, address, value);
 #endif
 
@@ -930,7 +930,7 @@ INLINE void m68ki_write_16(uint address, uint value)
   m68ki_check_address_error(address, MODE_WRITE, FLAG_S | FUNCTION_CODE_USER_DATA); /* auto-disable (see m68kcpu.h) */
 
 #ifdef HOOK_CPU
-  if (cpu_hook)
+  if (UNLIKELY(cpu_hook))
     cpu_hook(HOOK_M68K_W, 2, address, value);
 #endif
 
@@ -947,7 +947,7 @@ INLINE void m68ki_write_32(uint address, uint value)
   m68ki_check_address_error(address, MODE_WRITE, FLAG_S | FUNCTION_CODE_USER_DATA) /* auto-disable (see m68kcpu.h) */
 
 #ifdef HOOK_CPU
-  if (cpu_hook)
+  if (UNLIKELY(cpu_hook))
     cpu_hook(HOOK_M68K_W, 4, address, value);
 #endif
 

core/macros.h

@@ -53,6 +53,15 @@
 #define ALIGNED_(x) __attribute__ ((aligned(x)))
 #endif
 
+/* Provide the compiler with branch prediction information */
+#if defined(__GNUC__)
+#define LIKELY(x) __builtin_expect(!!(x), 1)
+#define UNLIKELY(x) __builtin_expect(!!(x), 0)
+#else
+#define LIKELY(x) x
+#define UNLIKELY(x) x
+#endif
+
 /* Default CD image file access (read-only) functions */
 /* If you need to override default stdio.h functions with custom filesystem API,
    redefine following macros in platform specific include file (osd.h) or Makefile

core/vdp_ctrl.c

@@ -2162,7 +2162,7 @@ static void vdp_bus_w(unsigned int data)
       }
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_VRAM_W, 2, addr, data);
 #endif
 
@@ -2211,7 +2211,7 @@ static void vdp_bus_w(unsigned int data)
       }
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_CRAM_W, 2, addr, data);
 #endif
 
@@ -2237,7 +2237,7 @@ static void vdp_bus_w(unsigned int data)
       }
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_VSRAM_W, 2, addr, data);
 #endif
 
@@ -2448,7 +2448,7 @@ static unsigned int vdp_68k_data_r_m5(void)
       data = *(uint16 *)&vram[addr & 0xFFFE];
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_VRAM_R, 2, addr, data);
 #endif
 
@@ -2477,7 +2477,7 @@ static unsigned int vdp_68k_data_r_m5(void)
       data |= (fifo[fifo_idx] & ~0x7FF);
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_VSRAM_R, 2, addr, data);
 #endif
 
@@ -2499,7 +2499,7 @@ static unsigned int vdp_68k_data_r_m5(void)
       data |= (fifo[fifo_idx] & ~0xEEE);
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_CRAM_R, 2, addr, data);
 #endif
 
@@ -2518,7 +2518,7 @@ static unsigned int vdp_68k_data_r_m5(void)
       data |= (fifo[fifo_idx] & ~0xFF);
 
 #ifdef HOOK_CPU
-      if (cpu_hook)
+      if (UNLIKELY(cpu_hook))
         cpu_hook(HOOK_VRAM_R, 2, addr, data);
 #endif
 

gx/gui/menu.c

@@ -48,6 +48,7 @@
 #ifdef HW_RVL
 #include <ogc/usbmouse.h>
 #include "wiidrc.h"
+#include "retrousb.h"
 #endif
 
 #include <ogc/lwp_threads.h>
@@ -124,6 +125,7 @@
 #include "ctrl_nunchuk_png.h"
 #include "ctrl_wiimote_png.h"
 #include "ctrl_wiiu_png.h"
+#include "ctrl_retrousb_png.h"
 #endif
 
 /* Generic images */
@@ -2471,7 +2473,7 @@ static void ctrlmenu(void)
 
   /* Player Configuration device items */
 #ifdef HW_RVL
-  gui_item items_device[6] =
+  gui_item items_device[7] =
   {
     {NULL,ctrl_option_off_png ,"Input\nDevice","Select Input Controller",534,244,24,24},
     {NULL,ctrl_gamecube_png   ,"Input\nDevice","Select Input Controller",530,246,36,24},
@@ -2479,6 +2481,7 @@ static void ctrlmenu(void)
     {NULL,ctrl_nunchuk_png    ,"Input\nDevice","Select Input Controller",532,242,32,32},
     {NULL,ctrl_classic_png    ,"Input\nDevice","Select Input Controller",526,242,40,32},
     {NULL,ctrl_wiiu_png       ,"Input\nDevice","Select Input Controller",526,246,40,24},
+    {NULL,ctrl_retrousb_png   ,"Input\nDevice","Select Input Controller",526,246,40,24},
   };
 #else
   gui_item items_device[2] =
@@ -2518,6 +2521,7 @@ static void ctrlmenu(void)
   {
     items_device[5].texture = gxTextureOpenPNG(items_device[5].data,0);
   }
+  items_device[6].texture = gxTextureOpenPNG(items_device[6].data, 0);
 #endif
 
   /* restore current menu elements */
@@ -3060,11 +3064,21 @@ static void ctrlmenu(void)
             /* support for only one gamepad */
             if (!WiiDRC_Inited() || !WiiDRC_Connected() || (config.input[player].port >= 1))
             {
-              /* no input controller left */
+              /* test RetroUSB */
-              config.input[player].device = -1;
+              config.input[player].device = 5;
-              config.input[player].port = player%4;
+              config.input[player].port = 0;
             }
           }
+
+          if (config.input[player].device == 5)
+          {
+              if (!RetroUSB_OK() || config.input[player].port >= 1)
+              {
+                  /* no input controller left */
+                  config.input[player].device = -1;
+                  config.input[player].port = player % 4;
+              }
+          }
 #endif
 
           /* update menu items */
@@ -3230,6 +3244,7 @@ static void ctrlmenu(void)
   {
     gxTextureClose(&items_device[5].texture);
   }
+  gxTextureClose(&items_device[6].texture);
 #endif
 }
 

gx/gx_input.c

@@ -46,6 +46,7 @@
 #ifdef HW_RVL
 #include <ogc/usbmouse.h>
 #include "wiidrc.h"
+#include "retrousb.h"
 #endif
 
 /* Analog sticks sensitivity */
@@ -79,12 +80,13 @@
 #define PAD_RIGHT 3
 
 /* default directions mapping  */
-static u32 wpad_dirmap[4][4] =
+static u32 wpad_dirmap[5][4] =
 {
   {WPAD_BUTTON_RIGHT, WPAD_BUTTON_LEFT, WPAD_BUTTON_UP, WPAD_BUTTON_DOWN},                                  /* WIIMOTE */
   {WPAD_BUTTON_UP, WPAD_BUTTON_DOWN, WPAD_BUTTON_LEFT, WPAD_BUTTON_RIGHT},                                  /* WIIMOTE + NUNCHUK */
   {WPAD_CLASSIC_BUTTON_UP, WPAD_CLASSIC_BUTTON_DOWN, WPAD_CLASSIC_BUTTON_LEFT, WPAD_CLASSIC_BUTTON_RIGHT},  /* CLASSIC */
-  {WIIDRC_BUTTON_UP, WIIDRC_BUTTON_DOWN, WIIDRC_BUTTON_LEFT, WIIDRC_BUTTON_RIGHT}                           /* WIIU GAMEPAD */
+  {WIIDRC_BUTTON_UP, WIIDRC_BUTTON_DOWN, WIIDRC_BUTTON_LEFT, WIIDRC_BUTTON_RIGHT},                           /* WIIU GAMEPAD */
+  {PAD_BUTTON_UP, PAD_BUTTON_DOWN, PAD_BUTTON_LEFT, PAD_BUTTON_RIGHT}
 };
 
 #define WPAD_BUTTONS_HELD (WPAD_BUTTON_UP | WPAD_BUTTON_DOWN | WPAD_BUTTON_LEFT | WPAD_BUTTON_RIGHT | \
@@ -615,6 +617,7 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
 {
   char msg[64];
   u32 p = 255;
+  bool isRetroUSB = false;
 
   /* Disable background PAD scanning */
   inputs_disabled = 1;
@@ -624,12 +627,14 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
   {
     WPAD_Probe(chan, &p);
   }
-  else
+  else if (WiiDRC_Inited() && WiiDRC_Connected())
   {
-    if (WiiDRC_Inited() && WiiDRC_Connected())
-    {
       p = exp;
-    }
+  }
+  else if (RetroUSB_OK())
+  {
+      p = exp;
+      isRetroUSB = true;
   }
   
   /* Device not detected */
@@ -638,7 +643,7 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
     if (exp == WPAD_EXP_NONE) sprintf(msg, "WIIMOTE #%d is not connected !", chan+1);
     else if (exp == WPAD_EXP_NUNCHUK) sprintf(msg, "NUNCHUK #%d is not connected !", chan+1);
     else if (exp == WPAD_EXP_CLASSIC) sprintf(msg, "CLASSIC #%d is not connected !", chan+1);
-    else sprintf(msg, "WIIU GAMEPAD is not connected !");
+    else sprintf(msg, "WIIU GAMEPAD or RETROUSB is not connected !");
     GUI_WaitPrompt("Error",msg);
 
     /* re-enable background PAD scanning and exit */
@@ -661,6 +666,14 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
           WPAD_ScanPads();
         }
       }
+      else if (isRetroUSB)
+      {
+          while (RetroUSB_ButtonsHeld())
+          {
+              VIDEO_WaitVSync();
+              RetroUSB_ScanPads();
+          }
+      }
       else
       {
         while (WiiDRC_ButtonsHeld())
@@ -672,7 +685,7 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
 
       /* configurable button */
       sprintf(msg,"Press key for %s\n(HOME to return)",keyname[first_key]);
-      GUI_MsgBoxUpdate(0,msg);
+      GUI_MsgBoxUpdate(0, msg);
 
       /* wait for user input */
       p = 0;
@@ -684,6 +697,11 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
           WPAD_ScanPads();
           p = WPAD_ButtonsDown(chan);
         }
+        else if (isRetroUSB)
+        {
+            RetroUSB_ScanPads();
+            p = RetroUSB_ButtonsHeld();
+        }
         else
         {
           WiiDRC_ScanPads();
@@ -742,17 +760,30 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
         /* WiiU GamePad Controller */
         default:
         {
-          if (p & WIIDRC_BUTTON_A) p = WIIDRC_BUTTON_A;
+          if (isRetroUSB) {
-          else if (p & WIIDRC_BUTTON_B) p = WIIDRC_BUTTON_B;
+              if (p & PAD_BUTTON_A) p = PAD_BUTTON_A;
-          else if (p & WIIDRC_BUTTON_X) p = WIIDRC_BUTTON_X;
+              else if (p & PAD_BUTTON_B) p = PAD_BUTTON_B;
-          else if (p & WIIDRC_BUTTON_Y) p = WIIDRC_BUTTON_Y;
+              else if (p & PAD_BUTTON_X) p = PAD_BUTTON_X;
-          else if (p & WIIDRC_BUTTON_ZL) p = WIIDRC_BUTTON_ZL;
+              else if (p & PAD_BUTTON_Y) p = PAD_BUTTON_Y;
-          else if (p & WIIDRC_BUTTON_ZR) p = WIIDRC_BUTTON_ZR;
+              else if (p & PAD_TRIGGER_Z) p = PAD_TRIGGER_Z;
-          else if (p & WIIDRC_BUTTON_PLUS) p = WIIDRC_BUTTON_PLUS;
+              else if (p & PAD_BUTTON_START) p = PAD_BUTTON_START;
-          else if (p & WIIDRC_BUTTON_MINUS) p = WIIDRC_BUTTON_MINUS;
+              else if (p & PAD_TRIGGER_L) p = PAD_TRIGGER_L;
-          else if (p & WIIDRC_BUTTON_L) p = WIIDRC_BUTTON_L;
+              else if (p & PAD_TRIGGER_R) p = PAD_TRIGGER_R;
-          else if (p & WIIDRC_BUTTON_R) p = WIIDRC_BUTTON_R;
+              else first_key = MAX_KEYS;
-          else first_key = MAX_KEYS;
+          }
+          else {
+              if (p & WIIDRC_BUTTON_A) p = WIIDRC_BUTTON_A;
+              else if (p & WIIDRC_BUTTON_B) p = WIIDRC_BUTTON_B;
+              else if (p & WIIDRC_BUTTON_X) p = WIIDRC_BUTTON_X;
+              else if (p & WIIDRC_BUTTON_Y) p = WIIDRC_BUTTON_Y;
+              else if (p & WIIDRC_BUTTON_ZL) p = WIIDRC_BUTTON_ZL;
+              else if (p & WIIDRC_BUTTON_ZR) p = WIIDRC_BUTTON_ZR;
+              else if (p & WIIDRC_BUTTON_PLUS) p = WIIDRC_BUTTON_PLUS;
+              else if (p & WIIDRC_BUTTON_MINUS) p = WIIDRC_BUTTON_MINUS;
+              else if (p & WIIDRC_BUTTON_L) p = WIIDRC_BUTTON_L;
+              else if (p & WIIDRC_BUTTON_R) p = WIIDRC_BUTTON_R;
+              else first_key = MAX_KEYS;
+          }
           break;
         }
       }
@@ -762,6 +793,14 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
       {
         config.wpad_keymap[4*exp + chan][first_key] = p;
       }
+
+      if (isRetroUSB)
+      {
+          while (RetroUSB_ButtonsHeld())
+          {
+              VIDEO_WaitVSync();
+          }
+      }
     }
   }
   while (first_key++ < last_key);
@@ -775,6 +814,14 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
       WPAD_ScanPads();
     }
   }
+  else if (isRetroUSB)
+  {
+      while (RetroUSB_ButtonsHeld())
+      {
+          VIDEO_WaitVSync();
+          RetroUSB_ScanPads();
+      }
+  }
   else
   {
     while (WiiDRC_ButtonsHeld())
@@ -784,49 +831,55 @@ static void wpad_config(u8 exp, int chan, int first_key, int last_key)
     }
   }
 
-  /* Configurable menu key */
+  if (!isRetroUSB)
-  GUI_MsgBoxUpdate(0,"Press key(s) for MENU");
-
-  /* reset key combo */
-  config.wpad_keymap[4*exp + chan][KEY_MENU] = 0;
-
-  /* wait for user input */
-  p = 0;
-  while (!p)
   {
-    VIDEO_WaitVSync();
+      /* Configurable menu key */
-    if (exp <= WPAD_EXP_CLASSIC)
+      GUI_MsgBoxUpdate(0, "Press key(s) for MENU");
-    {
-      WPAD_ScanPads();
-      p = WPAD_ButtonsHeld(chan);
-    }
-    else
-    {
-      WiiDRC_ScanPads();
-      p = WiiDRC_ButtonsHeld();
-    }
-  }
 
-  /* register keys until none are pressed anymore */
+      /* reset key combo */
-  while (p)
+      config.wpad_keymap[4 * exp + chan][KEY_MENU] = 0;
+
+      /* wait for user input */
+      p = 0;
+      while (!p)
+      {
+          VIDEO_WaitVSync();
+          if (exp <= WPAD_EXP_CLASSIC)
+          {
+              WPAD_ScanPads();
+              p = WPAD_ButtonsHeld(chan);
+          }
+          else
+          {
+              WiiDRC_ScanPads();
+              p = WiiDRC_ButtonsHeld();
+          }
+      }
+
+      /* register keys until none are pressed anymore */
+      while (p)
+      {
+          /* update key combo */
+          config.wpad_keymap[4 * exp + chan][KEY_MENU] |= p;
+
+          /* update WPAD status */
+          VIDEO_WaitVSync();
+          if (exp <= WPAD_EXP_CLASSIC)
+          {
+              WPAD_ScanPads();
+              p = WPAD_ButtonsHeld(chan);
+          }
+          else
+          {
+              WiiDRC_ScanPads();
+              p = WiiDRC_ButtonsHeld();
+          }
+      }
+  }
+  else
   {
-    /* update key combo */
+      config.wpad_keymap[4 * exp + chan][KEY_MENU] = 0xFFFF;
-    config.wpad_keymap[4*exp + chan][KEY_MENU] |= p;
-
-    /* update WPAD status */
-    VIDEO_WaitVSync();
-    if (exp <= WPAD_EXP_CLASSIC)
-    {
-      WPAD_ScanPads();
-      p = WPAD_ButtonsHeld(chan);
-    }
-    else
-    {
-      WiiDRC_ScanPads();
-      p = WiiDRC_ButtonsHeld();
-    }
   }
-
   /* re-enable background WPAD scanning and exit */
   inputs_disabled = 0;
 }
@@ -846,34 +899,41 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
   /* WiiU GamePad Controller support */
   if (exp > WPAD_EXP_CLASSIC)
   {
-    WiiDRC_ScanPads();
+      if (RetroUSB_OK())
-    if (WiiDRC_ShutdownRequested())
-    {
-      Shutdown = ConfigRequested = 1;
-      reload = 0;
-      return;
-    }
-
-    p = WiiDRC_ButtonsHeld();
-
-    /* Default fast-forward key combo */
-    if (WiiDRC_ButtonsDown() & WIIDRC_BUTTON_HOME)
-    {
-      if (p & WIIDRC_BUTTON_MINUS)
       {
-        audioSync ^= AUDIO_WAIT;
+          p = RetroUSB_ButtonsHeld();
-        videoSync = (audioSync && config.vsync && (gc_pal != vdp_pal)) ? VIDEO_WAIT : 0;
-        return;
       }
-    }
+      else
+      {
+          WiiDRC_ScanPads();
+          if (WiiDRC_ShutdownRequested())
+          {
+              Shutdown = ConfigRequested = 1;
+              reload = 0;
+              return;
+          }
 
-    /* Left Analog Stick */
+          p = WiiDRC_ButtonsHeld();
-    x = (WiiDRC_lStickX() * 128) / 75;
+
-    y = (WiiDRC_lStickY() * 128) / 75;
+          /* Default fast-forward key combo */
-    if (x > 127) x = 127;
+          if (WiiDRC_ButtonsDown() & WIIDRC_BUTTON_HOME)
-    else if (x < -128) x = -128;
+          {
-    if (y > 127) y = 127;
+              if (p & WIIDRC_BUTTON_MINUS)
-    else if (y < -128) y = -128;
+              {
+                  audioSync ^= AUDIO_WAIT;
+                  videoSync = (audioSync && config.vsync && (gc_pal != vdp_pal)) ? VIDEO_WAIT : 0;
+                  return;
+              }
+          }
+
+          /* Left Analog Stick */
+          x = (WiiDRC_lStickX() * 128) / 75;
+          y = (WiiDRC_lStickY() * 128) / 75;
+          if (x > 127) x = 127;
+          else if (x < -128) x = -128;
+          if (y > 127) y = 127;
+          else if (y < -128) y = -128;
+      }
   }
   else if (exp != WPAD_EXP_NONE)
   {
@@ -933,7 +993,7 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
       input.analog[i][1] = y ? (127 - y) : 128;
 
       /* Right Stick analog position [0-255] */
-      if (exp >= WPAD_EXP_CLASSIC)
+      if (exp >= WPAD_EXP_CLASSIC && !RetroUSB_OK())
       {
         if (exp > WPAD_EXP_CLASSIC)
         {
@@ -1060,7 +1120,7 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
           input.analog[i][1] = 512;
         }
       }
-      else
+      else if(!RetroUSB_OK())
       {
         /* Left analog stick */
         input.analog[i][0] += x / ANALOG_SENSITIVITY;
@@ -1114,7 +1174,7 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
           input.analog[i][1] = (int)((ir.sy - 384) * 2 / 3 / ANALOG_SENSITIVITY);
         }
       }
-      else
+      else if(!RetroUSB_OK())
       {
         /* Left analog stick position (-127;+127) -> (-255;+255) */
         input.analog[i][0] = (x / ANALOG_SENSITIVITY) * 2;
@@ -1156,7 +1216,7 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
           input.analog[0][1] = 0x1fc + ((ir.y + config.caly) * (0x2f7 - 0x1fc + 1)) / 480;
         }
       }
-      else
+      else if(!RetroUSB_OK())
       {
         /* Left analog stick */
         input.analog[0][0] += x / ANALOG_SENSITIVITY;
@@ -1193,7 +1253,7 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
           input.analog[0][1] = ((ir.y + config.caly) * 250) / 480;
         }
       }
-      else
+      else if(!RetroUSB_OK())
       {
         /* Left analog stick */
         input.analog[0][0] += x / ANALOG_SENSITIVITY;
@@ -1226,7 +1286,7 @@ static void wpad_update(s8 chan, u8 i, u32 exp)
           input.analog[0][1] = ((ir.y + config.caly) * 255) / 480;
         }
       }
-      else
+      else if(!RetroUSB_OK())
       {
         /* Left analog stick */
         input.analog[0][0] += x / ANALOG_SENSITIVITY;
@@ -1305,6 +1365,7 @@ void gx_input_Init(void)
   WPAD_SetDataFormat(WPAD_CHAN_ALL,WPAD_FMT_BTNS_ACC_IR);
   WPAD_SetVRes(WPAD_CHAN_ALL,640,480);
   WiiDRC_Init();
+  RetroUSB_OK();
 #endif
 }
 
@@ -1379,6 +1440,14 @@ int gx_input_FindDevices(void)
           }
           break;
         }
+
+        case 5: /* RetroUSB */
+        {
+            if (RetroUSB_OK())
+            {
+                found++;
+            }
+        }
  #endif
 
         default:
@@ -1461,6 +1530,17 @@ void gx_input_SetDefault(void)
     config.wpad_keymap[4*3][KEY_BUTTONZ] = WIIDRC_BUTTON_X;
     config.wpad_keymap[4*3][KEY_MODE]    = WIIDRC_BUTTON_MINUS;
     config.wpad_keymap[4*3][KEY_MENU]    = WIIDRC_BUTTON_HOME;
+
+    /* RetroUSB */
+    config.wpad_keymap[4 * 3 + 1][KEY_BUTTONA] = PAD_BUTTON_Y;
+    config.wpad_keymap[4 * 3 + 1][KEY_BUTTONB] = PAD_BUTTON_B;
+    config.wpad_keymap[4 * 3 + 1][KEY_BUTTONC] = PAD_BUTTON_A;
+    config.wpad_keymap[4 * 3 + 1][KEY_START] = PAD_BUTTON_START;
+    config.wpad_keymap[4 * 3 + 1][KEY_BUTTONX] = PAD_TRIGGER_L;
+    config.wpad_keymap[4 * 3 + 1][KEY_BUTTONY] = PAD_TRIGGER_R;
+    config.wpad_keymap[4 * 3 + 1][KEY_BUTTONZ] = PAD_BUTTON_X;
+    config.wpad_keymap[4 * 3 + 1][KEY_MODE] = PAD_TRIGGER_Z;
+    config.wpad_keymap[4 * 3 + 1][KEY_MENU] = 0;
   }
 #endif
 
@@ -1473,16 +1553,21 @@ void gx_input_SetDefault(void)
   }
 
 #ifdef HW_RVL
+
+  i = 0;
   /* autodetect connected WiiU Gamepad Controller */
   if (WiiDRC_Inited() && WiiDRC_Connected())
   {
-    config.input[0].device = 4;
+    config.input[i].device = 4;
-    config.input[0].port = 0;
+    config.input[i].port = 0;
-    i = 1;
+    i++;
   }
-  else
+  /* autodetect RetroUSB */
+  if (RetroUSB_OK())
   {
-    i = 0;
+      config.input[i].device = 5;
+      config.input[i].port = 0;
+      i++;
   }
 
   /* autodetect connected Wii Controllers */

gx/retrousb.c

@@ -0,0 +1,188 @@
+#ifdef HW_RVL
+#include <gccore.h>
+#include <string.h>
+
+#define RETROUSB_VID 61440
+#define RETROUSB_PID 8	
+
+#define POLL_THREAD_STACKSIZE		(1024 * 4)
+#define POLL_THREAD_PRIO			65
+
+static bool setup = false;
+static bool replugRequired = false;
+static s32 deviceId = 0;
+static u8 endpoint = 0;
+static u8 bMaxPacketSize = 0;
+static u32 jpRetroUSB;
+static char testChars[65];
+static bool pollThreadRunning = false;
+static lwp_t pollThread = LWP_THREAD_NULL;
+static u8 pollStack[POLL_THREAD_STACKSIZE] ATTRIBUTE_ALIGN(8);
+u8 RetroUSB_Counter = 0;
+
+static bool isRetroUSBGamepad(usb_device_entry dev)
+{
+	return dev.vid == RETROUSB_VID && dev.pid == RETROUSB_PID;
+}
+
+static u8 getEndpoint(usb_devdesc devdesc)
+{
+	if (devdesc.configurations == NULL || devdesc.configurations->interfaces == NULL ||
+		devdesc.configurations->interfaces->endpoints == NULL)
+	{
+		return -1;
+	}
+	return devdesc.configurations->interfaces->endpoints->bEndpointAddress;
+}
+
+static int removal_cb(int result, void* usrdata)
+{
+	s32 fd = (s32)usrdata;
+	if (fd == deviceId)
+	{
+		deviceId = 0;
+	}
+	return 1;
+}
+
+static void open()
+{
+	if (deviceId != 0)
+	{
+		return;
+	}
+
+	usb_device_entry dev_entry[8];
+	u8 dev_count;
+	if (USB_GetDeviceList(dev_entry, 8, USB_CLASS_HID, &dev_count) < 0)
+	{
+		return;
+	}
+
+	for (int i = 0; i < dev_count; ++i)
+	{
+		if (!isRetroUSBGamepad(dev_entry[i]))
+		{
+			continue;
+		}
+		s32 fd;
+		if (USB_OpenDevice(dev_entry[i].device_id, dev_entry[i].vid, dev_entry[i].pid, &fd) < 0)
+		{
+			continue;
+		}
+
+		usb_devdesc devdesc;
+		if (USB_GetDescriptors(fd, &devdesc) < 0)
+		{
+			// You have to replug the controller!
+			replugRequired = true;
+			USB_CloseDevice(&fd);
+			break;
+		}
+
+		deviceId = fd;
+		replugRequired = false;
+		endpoint = getEndpoint(devdesc);
+		bMaxPacketSize = devdesc.bMaxPacketSize0;
+		USB_DeviceRemovalNotifyAsync(fd, &removal_cb, (void*)fd);
+		break;
+	}
+
+	setup = true;
+}
+
+u32 RetroUSB_ScanPads(void)
+{
+	return jpRetroUSB;
+}
+
+static void *scanThreadFunc(void *arg)
+{
+	RetroUSB_Counter = 100;
+	while (1)
+	{
+		if (deviceId == 0 || replugRequired)
+		{
+			continue;
+		}
+
+		uint8_t ATTRIBUTE_ALIGN(32) buf[4];
+		s32 res = USB_ReadIntrMsg(deviceId, endpoint, sizeof(buf), buf);
+		if (res < 0)
+		{
+			continue;
+		}
+
+		u32 jp = 0;
+		jp |= (buf[2] & 0x80) ? PAD_BUTTON_UP : 0;
+		jp |= (buf[2] & 0x40) ? PAD_BUTTON_DOWN : 0;
+		jp |= (buf[2] & 0x20) ? PAD_BUTTON_LEFT : 0;
+		jp |= (buf[2] & 0x10) ? PAD_BUTTON_RIGHT : 0;
+
+		jp |= ((buf[2] & 0x08)) ? PAD_BUTTON_A : 0;
+		jp |= ((buf[2] & 0x04)) ? PAD_BUTTON_B : 0;
+		jp |= ((buf[3] & 0x04)) ? PAD_BUTTON_X : 0;
+		jp |= ((buf[2] & 0x02)) ? PAD_BUTTON_Y : 0;
+
+		jp |= ((buf[3] & 0x02)) ? PAD_TRIGGER_L : 0;
+		jp |= ((buf[3] & 0x08)) ? PAD_TRIGGER_R : 0;
+
+		jp |= ((buf[2] & 0x01)) ? PAD_BUTTON_START : 0;
+		jp |= ((buf[3] & 0x01)) ? PAD_TRIGGER_Z : 0;
+
+		/*int i;
+		for (i = 0; i < res; i++) {
+			testChars[i * 3] = "0123456789ABCDEF"[(buf[i] & 0xF0) >> 4];
+			testChars[i * 3 + 1] = "0123456789ABCDEF"[buf[i] & 0xF];
+			testChars[i * 3 + 2] = ' ';
+		}
+
+		counter++;
+		testChars[i * 3] = "0123456789ABCDEF"[(counter & 0xF0) >> 4];
+		testChars[i * 3 + 1] = "0123456789ABCDEF"[counter & 0xF];
+		testChars[i * 3 + 2] = '\0';*/
+
+		RetroUSB_Counter++;
+
+		jpRetroUSB = jp;
+	}
+
+	return 0;
+}
+
+u32 RetroUSB_ButtonsHeld()
+{
+	if (!setup)
+	{
+		open();
+	}
+	if (!pollThreadRunning)
+	{
+		memset(pollStack, 0, POLL_THREAD_STACKSIZE);
+
+		s32 res = LWP_CreateThread(&pollThread, scanThreadFunc, NULL,
+			pollStack, POLL_THREAD_STACKSIZE,
+			POLL_THREAD_PRIO);
+		if (!res)
+		{
+			pollThreadRunning = true;
+		}
+	}
+	if (deviceId == 0)
+	{
+		return 0;
+	}
+	return jpRetroUSB;
+}
+
+char* RetroUSB_TestChars() {
+	return testChars;
+}
+
+bool RetroUSB_OK()
+{
+	open();
+	return !replugRequired && deviceId;
+}
+
+#endif

gx/retrousb.h

@@ -0,0 +1,13 @@
+#ifndef _RETROUSB_H_
+#define _RETROUSB_H_
+
+#include <gctypes.h>
+
+bool RetroUSB_ScanPads();
+u32 RetroUSB_ButtonsHeld();
+bool RetroUSB_OK();
+char* RetroUSB_TestChars();
+
+extern u8 RetroUSB_Counter;
+
+#endif