From 3989ee5b9410024471bb0328bec3927f2eda2473 Mon Sep 17 00:00:00 2001
From: sukhman-sukh <sukhmansinghsaluja@gmail.com>
Date: Mon, 15 Jan 2024 18:07:19 +0530
Subject: [PATCH] Add Write To Stack Functionality

---
 src/cpu.cpp     | 27 +++++++++++++++++++++++----
 src/cpu.h       |  7 +++++--
 src/gameBoy.cpp |  6 +++++-
 3 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/src/cpu.cpp b/src/cpu.cpp
index 1d2f2ff..85a7830 100644
--- a/src/cpu.cpp
+++ b/src/cpu.cpp
@@ -7899,15 +7899,34 @@ void CPU::printStack()
 				scanf("%c", &choice);
 			} while (choice != 'q' && choice != 'x');
 
-			
 			if (choice == 'x')
-			{ 
+			{
 				printf("Exiting Stack\n");
 				break;
-			} else{
-				count = 0;	
+			}
+			else
+			{
+				count = 0;
 				continue;
 			}
 		}
 	}
+}
+
+// Write to memory specified in debugger
+void CPU::writeToMemory()
+{
+	Word address;
+	Byte value;
+	printf("Address: ");
+	scanf("%hx", &address);
+	if (address >= 0x8000)
+	{
+		printf("Value: ");
+		scanf("%hhx", &value);
+		mMap->writeMemory(address, value);
+	} else {
+		printf("Can't Write to Addresses less than 0x8000\n");
+	}
+
 }
\ No newline at end of file
diff --git a/src/cpu.h b/src/cpu.h
index f341942..55368de 100644
--- a/src/cpu.h
+++ b/src/cpu.h
@@ -26,7 +26,6 @@ class CPU
 {
 
 private:
-
 	// Accumulator and Flags
 	Register reg_AF;
 
@@ -1163,7 +1162,7 @@ class CPU
 	// Register reg_DE;
 
 	// get value of A
-	Byte get_reg_A(){ return reg_AF.hi; }
+	Byte get_reg_A() { return reg_AF.hi; }
 
 	// get register B
 	Byte get_reg_B() { return reg_BC.hi; }
@@ -1198,5 +1197,9 @@ class CPU
 	// update the timers
 	void updateTimers(int cycles);
 
+	// Read memory
 	void printStack();
+
+	// Write to memory
+	void writeToMemory();
 };
diff --git a/src/gameBoy.cpp b/src/gameBoy.cpp
index ab3c139..b8af189 100644
--- a/src/gameBoy.cpp
+++ b/src/gameBoy.cpp
@@ -239,7 +239,8 @@ void GBE::debug_int()
 					// enter l for L
 					// press left ctrl to open V-Ram debugger window
 					// enter p to print the stack
-					// enter e to exit info mode
+					// enter w to write to memory
+					// enter x to exit info mode
 					while (infoMode)
 					{
 						while (SDL_PollEvent(event))
@@ -281,6 +282,9 @@ void GBE::debug_int()
 								case SDLK_p:
 									gbe_cpu->printStack();
 									break;
+								case SDLK_w:
+									gbe_cpu->writeToMemory();
+									break;
 								case SDLK_x:
 									infoMode = false;
 									break;