From 0c97143b226e6d85b8fa383bc4b04831e2589090 Mon Sep 17 00:00:00 2001
From: Raimon Zamora <jaildoctor@gmail.com>
Date: Wed, 15 Jan 2025 07:34:12 +0100
Subject: [PATCH] - Treballant en el mbc_none

---
 mbc_none.cpp | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 mbc_none.h   |  6 ++++++
 2 files changed, 62 insertions(+)
 create mode 100644 mbc_none.cpp
 create mode 100644 mbc_none.h

diff --git a/mbc_none.cpp b/mbc_none.cpp
new file mode 100644
index 0000000..848b9b8
--- /dev/null
+++ b/mbc_none.cpp
@@ -0,0 +1,56 @@
+#include "mbc_none.h"
+#include "mem.h"
+
+namespace mbc_none
+{
+    uint8_t bootrom[256];
+    uint8_t *rom;
+    uint8_t vram[8192];
+    uint8_t exram[8192];
+    uint8_t wram[8192];
+    uint8_t hram[512];
+
+    uint8_t readMem(uint16_t address)
+    {
+        if (address < 0x8000) {
+            if ( (address < 0x0100) && ((hram[0x150]&0x01)==0) ) return bootrom[address];
+            return rom[address];
+        } else if (address < 0xA000) {
+            return vram[address - 0x8000];
+        } else if (address < 0xC000) {
+            return exram[address - 0xA000];
+        } else if (address < 0xE000) {
+            return wram[address - 0xC000];
+        } else if (address < 0xFE00) {
+            return wram[address - 0xE000];
+        } else {
+            return hram[address - 0XFE00];
+        }
+    }
+
+    void writeMem(uint16_t address, uint8_t value)
+    {
+        if (address < 0x8000) {
+            // Read Only Memory, you know...
+            //rom[address] = value;
+        } else if (address < 0xA000) {
+            vram[address - 0x8000] = value;
+        } else if (address < 0xC000) {
+            exram[address - 0xA000] = value;
+        } else if (address < 0xE000) {
+            wram[address - 0xC000] = value;
+        } else if (address < 0xFE00) {
+            wram[address - 0xE000] = value;
+        } else {
+            if ( (address==0xFF50) && ((value&0x01) != 1) ) return;  //Only allow disabling boot room
+            hram[address - 0xFE00] = value;
+        }
+    }
+
+    void init(uint8_t *rom)
+    {
+        mem::readMem = mbc_none::readMem;
+        mem::writeMem = mbc_none::writeMem;
+        mbc_none::rom = rom;
+    }
+}
\ No newline at end of file
diff --git a/mbc_none.h b/mbc_none.h
new file mode 100644
index 0000000..5323160
--- /dev/null
+++ b/mbc_none.h
@@ -0,0 +1,6 @@
+#pragma once
+
+namespace mbc_none
+{
+    void init();
+}