From 4c925fd81b5555030c80a530c637d920fc19d95d Mon Sep 17 00:00:00 2001
From: esmjanus <esmjanus@gmail.com>
Date: Mon, 23 Oct 2017 19:40:32 -0500
Subject: [PATCH] - Added support for Tengai Makyou Zero english translation.
 Based on DougRPG source code.

- Removed some unused variables.
---
 dsp4emu.cpp    | 14 +++++++-------
 memmap.cpp     | 42 +++++++++++++++++++++++++++++++++++++-----
 spc7110dec.cpp |  4 +++-
 spc7110dec.h   |  2 ++
 spc7110emu.cpp |  3 ++-
 spc7110emu.h   |  2 ++
 6 files changed, 53 insertions(+), 14 deletions(-)

diff --git a/dsp4emu.cpp b/dsp4emu.cpp
index 09418d8..0b8a36a 100644
--- a/dsp4emu.cpp
+++ b/dsp4emu.cpp
@@ -1267,9 +1267,9 @@ void DSP4_Op09()
 		if(sprite_type == 1)
 		{
 			int16 plane;
-			int16 car_left, car_right, car_left_a;
-			int16 focal_back, focal_front;
-			uint8 distance, id;
+			int16 car_left, car_right;//, car_left_a;
+			int16 focal_back;//, focal_front;
+			//uint8 distance, id;
 
 			// we already have 4 bytes we want
 			DSP4.in_count = 6+12;
@@ -1280,11 +1280,11 @@ void DSP4_Op09()
 			// filter inputs
 			project_y1 = DSP4_READ_WORD(0x00);
 			// 0x9000 = DSP4_READ_WORD(0x02);
-			id = DSP4.parameters[0x04];
-			distance = DSP4.parameters[0x05];
+			//id = DSP4.parameters[0x04];
+			//distance = DSP4.parameters[0x05];
 			focal_back = DSP4_READ_WORD(0x06);
-			focal_front = DSP4_READ_WORD(0x08);
-			car_left_a = DSP4_READ_WORD(0x0a);
+			//focal_front = DSP4_READ_WORD(0x08);
+			//car_left_a = DSP4_READ_WORD(0x0a);
 			car_left = DSP4_READ_WORD(0x0c);
 			plane = DSP4_READ_WORD(0x0e);
 			car_right = DSP4_READ_WORD(0x10);
diff --git a/memmap.cpp b/memmap.cpp
index 8ce3b72..1e9f2ec 100644
--- a/memmap.cpp
+++ b/memmap.cpp
@@ -657,7 +657,7 @@ int CMemory::LoadROMMore(int TotalFileSize,int &retry_count)
     int hi_score = ScoreHiROM (FALSE);
     int lo_score = ScoreLoROM (FALSE);
 	
-	uint8* RomHeader=ROM;
+	//uint8* RomHeader=ROM;
 	
 	ExtendedFormat=NOPE;
 	
@@ -716,7 +716,7 @@ int CMemory::LoadROMMore(int TotalFileSize,int &retry_count)
 			ExtendedFormat = BIGFIRST;
 			hi_score=swappedhirom;
 			lo_score=swappedlorom;
-			RomHeader=ROM+0x400000;
+			//RomHeader=ROM+0x400000;
 		}
 		else
 			ExtendedFormat = SMALLFIRST;
@@ -3305,13 +3305,13 @@ void CMemory::JumboLoROMMap (bool8 Interleaved)
     int i;
 	
 	uint32 OFFSET0 = 0x400000;
-    uint32 OFFSET1 = 0x400000;
+    //uint32 OFFSET1 = 0x400000;
     uint32 OFFSET2 = 0x000000;
 	
     if (Interleaved)
     {
 		OFFSET0 = 0x000000;
-		OFFSET1 = 0x000000;
+		//OFFSET1 = 0x000000;
 		OFFSET2 = CalculatedSize-0x400000; //changed to work with interleaved DKJM2.
     }
     // Banks 00->3f and 80->bf
@@ -3399,6 +3399,24 @@ void CMemory::JumboLoROMMap (bool8 Interleaved)
     WriteProtectROM ();
 }
 
+static uint32 map_mirror (uint32 size, uint32 pos)
+{
+	// from bsnes
+	if (size == 0)
+		return (0);
+	if (pos < size)
+		return (pos);
+
+	uint32	mask = 1 << 31;
+	while (!(pos & mask))
+		mask >>= 1;
+
+	if (size <= (pos & mask))
+		return (map_mirror(size, pos - mask));
+	else
+		return (mask + map_mirror(size - mask, pos - mask));
+}
+
 void CMemory::SPC7110HiROMMap ()
 {
 	int c;
@@ -3458,7 +3476,21 @@ void CMemory::SPC7110HiROMMap ()
 			BlockIsROM [i + 0x400] = BlockIsROM [i + 0xc00] = TRUE;
 		}
 	}
-
+	
+	uint32	p, addr;
+	
+	for (c = 0x40; c <= 0x4f; c++)
+	{
+		for (i = 0x0000; i <= 0xffff; i += 0x1000)
+		{
+			p = (c << 4) | (i >> 12);
+			addr = (c - 0x40) << 16;
+			Map[p] = ROM + 0x600000 + map_mirror(CalculatedSize, addr);
+			BlockIsROM[p] = TRUE;
+			BlockIsRAM[p] = FALSE;
+		}
+	}
+		
 	for (c = 0; c < 0x10; c++)
 	{
 		Map [0x500 + c] = (uint8 *) MAP_SPC7110_DRAM;
diff --git a/spc7110dec.cpp b/spc7110dec.cpp
index 8623f0e..976ab07 100644
--- a/spc7110dec.cpp
+++ b/spc7110dec.cpp
@@ -42,7 +42,7 @@ void SPC7110Decomp::write(uint8 data) {
 }
 
 uint8 SPC7110Decomp::dataread() {
-  unsigned size = memory_cartrom_size() - 0x100000;
+  unsigned size = memory_cartrom_size() - programmrom_size;
   while(decomp_offset >= size) decomp_offset -= size;
   return memory_cartrom_read(0x100000 + decomp_offset++);
 }
@@ -519,6 +519,8 @@ SPC7110Decomp::SPC7110Decomp() {
                    + map(3, 24) + map(2, 16) + map(1,  8) + map(0,  0);
     #undef map
   }
+  
+  programmrom_size = (memory_cartrom_size() > 0x500000) ? 0x200000 : 0x100000;
 }
 
 SPC7110Decomp::~SPC7110Decomp() {
diff --git a/spc7110dec.h b/spc7110dec.h
index 3a9c7ce..bead433 100644
--- a/spc7110dec.h
+++ b/spc7110dec.h
@@ -31,6 +31,8 @@ class SPC7110Decomp {
   unsigned decomp_mode;
   unsigned decomp_offset;
 
+  unsigned programmrom_size;
+  
   //read() will spool chunks half the size of decomp_buffer_size
   enum { decomp_buffer_size = SPC7110_DECOMP_BUFFER_SIZE }; //must be >= 64, and must be a power of two
   uint8 *decomp_buffer;
diff --git a/spc7110emu.cpp b/spc7110emu.cpp
index 364116a..fa7dd91 100644
--- a/spc7110emu.cpp
+++ b/spc7110emu.cpp
@@ -91,7 +91,7 @@ void SPC7110::reset() {
 }
 
 unsigned SPC7110::datarom_addr(unsigned addr) {
-  unsigned size = memory_cartrom_size() - 0x100000;
+  unsigned size = memory_cartrom_size() - programmrom_size;
   while(addr >= size) addr -= size;
   return addr + 0x100000;
 }
@@ -642,4 +642,5 @@ void SPC7110::mmio_write(unsigned addr, uint8 data) {
 }
 
 SPC7110::SPC7110() {
+	programmrom_size = (memory_cartrom_size() > 0x500000) ? 0x200000 : 0x100000;
 }
diff --git a/spc7110emu.h b/spc7110emu.h
index 5f66fec..f968907 100644
--- a/spc7110emu.h
+++ b/spc7110emu.h
@@ -131,6 +131,8 @@ class SPC7110 {
   unsigned rtc_index;
 
   static const unsigned months[12];
+  
+  unsigned programmrom_size;
 };
 
 #endif