PIF stuff

2023-03-04 00:02:06 +01:00
parent 3ed891aba1
commit 8ac5386fd2
12 changed files with 490 additions and 109 deletions
--- a/src/backend/core/mmio/PIF/Device.cpp
+++ b/src/backend/core/mmio/PIF/Device.cpp
@@ -0,0 +1,125 @@
+#include <PIF.hpp>
+#include <MupenMovie.hpp>
+#include "log.hpp"
+
+namespace n64 {
+void PIF::InitDevices(SaveType saveType) {
+  for (int i = 0; i < 4; i++) {
+    joybusDevices[i].type = JOYBUS_CONTROLLER; //TODO
+    if (joybusDevices[i].type) {
+      // TODO: make this configurable
+      joybusDevices[i].accessoryType = ACCESSORY_MEMPACK;
+    }
+  }
+
+  if (saveType == SAVE_EEPROM_4k) {
+    joybusDevices[4].type = JOYBUS_4KB_EEPROM;
+  } else if (saveType == SAVE_EEPROM_16k) {
+    joybusDevices[4].type = JOYBUS_16KB_EEPROM;
+  } else {
+    joybusDevices[4].type = JOYBUS_NONE;
+  }
+  joybusDevices[5].type = JOYBUS_NONE;
+}
+
+void PIF::ControllerID(u8 *res) {
+  if (channel < 6) {
+    switch (joybusDevices[channel].type) {
+      case JOYBUS_NONE:
+        res[0] = 0x00;
+        res[1] = 0x00;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_CONTROLLER:
+        res[0] = 0x05;
+        res[1] = 0x00;
+        res[2] = joybusDevices[channel].accessoryType != ACCESSORY_NONE ? 0x01 : 0x02;
+        break;
+      case JOYBUS_DANCEPAD:
+        res[0] = 0x05;
+        res[1] = 0x00;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_VRU:
+        res[0] = 0x00;
+        res[1] = 0x01;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_MOUSE:
+        res[0] = 0x02;
+        res[1] = 0x00;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_RANDNET_KEYBOARD:
+        res[0] = 0x00;
+        res[1] = 0x02;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_DENSHA_DE_GO:
+        res[0] = 0x20;
+        res[1] = 0x04;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_4KB_EEPROM:
+        res[0] = 0x00;
+        res[1] = 0x80;
+        res[2] = 0x00;
+        break;
+      case JOYBUS_16KB_EEPROM:
+        res[0] = 0x00;
+        res[1] = 0xC0;
+        res[2] = 0x00;
+        break;
+    }
+  } else {
+    Util::panic("Device ID on unknown channel {}", channel);
+  }
+
+  channel++;
+}
+
+bool PIF::ReadButtons(u8* res) {
+  if(channel >= 6) {
+    res[0] = 0;
+    res[1] = 0;
+    res[2] = 0;
+    res[3] = 0;
+    return false;
+  }
+
+  switch (joybusDevices[channel].type) {
+    case JOYBUS_NONE:
+      res[0]  = 0x00;
+      res[1]  = 0x00;
+      res[2]  = 0x00;
+      res[3]  = 0x00;
+      return false; // Device not present
+    case JOYBUS_CONTROLLER:
+      if (TasMovieLoaded()) {
+        // Load inputs from TAS movie
+        Controller controller = TasNextInputs();
+        res[0] = controller.byte1;
+        res[1] = controller.byte2;
+        res[2] = controller.joy_x;
+        res[3] = controller.joy_y;
+      } else {
+        // Load inputs normally
+        res[0] = joybusDevices[channel].controller.byte1;
+        res[1] = joybusDevices[channel].controller.byte2;
+        res[2] = joybusDevices[channel].controller.joy_x;
+        res[3] = joybusDevices[channel].controller.joy_y;
+      }
+      break;
+    case JOYBUS_DANCEPAD:
+    case JOYBUS_VRU:
+    case JOYBUS_MOUSE:
+    case JOYBUS_RANDNET_KEYBOARD:
+    case JOYBUS_DENSHA_DE_GO:
+    case JOYBUS_4KB_EEPROM:
+    case JOYBUS_16KB_EEPROM:
+      return false;
+  }
+
+  return true; // Success!
+}
+}