minor commit

7 files changed, 32 insertions, 145 deletions

diff --git a/src/apple.c b/src/apple.c
index 6ff8a61..e69cbf8 100644
--- a/src/apple.c
+++ b/src/apple.c
@@ -1,7 +1,7 @@
 #include"apple.h"
 
 // The Incredible Wozmon!
-byte ROM[256] = {
+const byte ROM[256] = {
 	0xd8, 0x58, 0xa0, 0x7f, 0x8c, 0x12, 0xd0, 0xa9,
 	0xa7, 0x8d, 0x11, 0xd0, 0x8d, 0x13, 0xd0, 0xc9,
 	0xdf, 0xf0, 0x13, 0xc9, 0x9b, 0xf0, 0x03, 0xc8,
@@ -10,25 +10,25 @@ byte ROM[256] = {
 	0xf6, 0xad, 0x11, 0xd0, 0x10, 0xfb, 0xad, 0x10,
 	0xd0, 0x99, 0x00, 0x02, 0x20, 0xef, 0xff, 0xc9,
 	0x8d, 0xd0, 0xd4, 0xa0, 0xff, 0xa9, 0x00, 0xaa,
-	0x0a, 0x85, 0x2b, 0xc8, 0xb9, 0x00, 0x02, 0xc9, //0x40 ->
+	0x0a, 0x85, 0x2b, 0xc8, 0xb9, 0x00, 0x02, 0xc9,
 	0x8d, 0xf0, 0xd4, 0xc9, 0xae, 0x90, 0xf4, 0xf0,
 	0xf0, 0xc9, 0xba, 0xf0, 0xeb, 0xc9, 0xd2, 0xf0,
 	0x3b, 0x86, 0x28, 0x86, 0x29, 0x84, 0x2a, 0xb9,
 	0x00, 0x02, 0x49, 0xb0, 0xc9, 0x0a, 0x90, 0x06,
 	0x69, 0x88, 0xc9, 0xfa, 0x90, 0x11, 0x0a, 0x0a,
-	0x0a, 0x0a, 0xa2, 0x04, 0x0a, 0x26, 0x28, 0x26, // 0x70->
+	0x0a, 0x0a, 0xa2, 0x04, 0x0a, 0x26, 0x28, 0x26,
 	0x29, 0xca, 0xd0, 0xf8, 0xc8, 0xd0, 0xe0, 0xc4,
 	0x2a, 0xf0, 0x97, 0x24, 0x2b, 0x50, 0x10, 0xa5,
 	0x28, 0x81, 0x26, 0xe6, 0x26, 0xd0, 0xb5, 0xe6,
 	0x27, 0x4c, 0x44, 0xff, 0x6c, 0x24, 0x00, 0x30,
 	0x2b, 0xa2, 0x02, 0xb5, 0x27, 0x95, 0x25, 0x95,
-	0x23, 0xca, 0xd0, 0xf7, 0xd0, 0x14, 0xa9, 0x8d, // 0xA0->
+	0x23, 0xca, 0xd0, 0xf7, 0xd0, 0x14, 0xa9, 0x8d,
 	0x20, 0xef, 0xff, 0xa5, 0x25, 0x20, 0xdc, 0xff,
 	0xa5, 0x24, 0x20, 0xdc, 0xff, 0xa9, 0xba, 0x20,
 	0xef, 0xff, 0xa9, 0xa0, 0x20, 0xef, 0xff, 0xa1,
 	0x24, 0x20, 0xdc, 0xff, 0x86, 0x2b, 0xa5, 0x24,
 	0xc5, 0x28, 0xa5, 0x25, 0xe5, 0x29, 0xb0, 0xc1,
-	0xe6, 0x24, 0xd0, 0x02, 0xe6, 0x25, 0xa5, 0x24, // 0xD0->
+	0xe6, 0x24, 0xd0, 0x02, 0xe6, 0x25, 0xa5, 0x24,
 	0x29, 0x07, 0x10, 0xc8, 0x48, 0x4a, 0x4a, 0x4a,
 	0x4a, 0x20, 0xe5, 0xff, 0x68, 0x29, 0x0f, 0x09,
 	0xb0, 0xc9, 0xba, 0x90, 0x02, 0x69, 0x06, 0x2c,
@@ -38,7 +38,6 @@ byte ROM[256] = {
 
 void AppleOn() {
 	Memory = calloc(MEMORY_SIZE, sizeof(byte));
-	//ROM = calloc(256, sizeof(byte));
 	InitInstructionTable();
 	PC = 0xFF00;
 }
@@ -47,13 +46,11 @@ void AppleReset(){
 	acc = 0; X = 0; Y = 0; P = 0; S = 0;
 	state.cycles = 0; state.length = 0; state.address = 0; state.value = 0;
 	PC = 0xFF00;
-	free(Memory);
-	Memory = calloc(MEMORY_SIZE, sizeof(byte));
+	//free(Memory);
+	//Memory = calloc(MEMORY_SIZE, sizeof(byte));
 }
 
 
-//byte KBD_CR_val;
-
 byte GetMemory(address x){
 	switch(x)
 	{
@@ -82,8 +79,6 @@ byte GetMemory(address x){
 void SetMemory(address x, byte y){
 	switch(x)
 		{
-		  //case KBD_CR:
-		  //KBD_CR_val = x;
 		case DSP:
 			if (y & 0x80)
 				DisplayInput(y);
diff --git a/src/apple.h b/src/apple.h
index 244f1b3..f7829e5 100644
--- a/src/apple.h
+++ b/src/apple.h
@@ -6,15 +6,6 @@
 
 #define MEMORY_SIZE 0x0400
 
-#define XAML	0x24
-#define XAMH	0x25
-#define STL		0x26
-#define STH		0x27
-#define L		0x28
-#define H		0x29
-#define YSAV	0x2A
-#define MODE	0x2B
-
 #define KBD		0xD010
 #define KBD_CR	0xD011
 #define DSP		0xD012
diff --git a/src/cpu/core.h b/src/cpu/core.h
index f83002f..4b8d7f1 100644
--- a/src/cpu/core.h
+++ b/src/cpu/core.h
@@ -12,7 +12,7 @@ extern byte P;
 extern byte S;
 extern address PC;
 extern byte* Memory;
-extern byte ROM[];
+extern const byte ROM[];
 
 enum Addressing
 {
diff --git a/src/main.c b/src/main.c
index 801dba7..f1dfada 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,5 @@
 #include "apple.h"
 #include "video/interface.h"
-#include <ncurses.h>
 #include <unistd.h>
 #include "cpu/6502.h"
 
@@ -17,8 +16,13 @@ int main() {
 	while(1) {
 		// Computing
 		CallInstructionTable();
+
 		// Logging
-		fprintf(Log,
+		if (Time >= 0x2000)
+			// Stop logging after an arbitrary amount of time, so as to not create a huge file.
+			fclose(Log);
+		else {
+			fprintf(Log,
 				"%04x : %04x : %02x : %02x : %02x : %c%c_%c%c%c%c%c : %02x\n",
 				Time, PC, acc, X, Y,
 				GetFlag(flag_N) ? 'N':'.' ,
@@ -29,11 +33,12 @@ int main() {
 				GetFlag(flag_Z) ? 'Z':'.' ,
 				GetFlag(flag_C) ? 'C':'.' ,
 				S);
-		fflush(Log);
+			fflush(Log);
+			Time++;
+		}
+					
 		// Display information
 		PrintInfo();
-		// Logging
-		Time++;
 	}
 
 	DisplayClose();
diff --git a/src/test.c b/src/test.c
deleted file mode 100644
index 0aec2ce..0000000
--- a/src/test.c
+++ /dev/null
@@ -1,100 +0,0 @@
-#include "cpu/core.h"
-#include "apple.h"
-#include "video/interface.h"
-#include <ncurses.h>
-#include <unistd.h>
-
-
-/*
-  README
-  Assumes that the definition of ROM in apple.c has
-  been commented out.
-
-  This program is a successor to my 'interpreter.c'
-  utility, which unfortunately did not keep up with
-  the progress of my program.
-  This one works by letting you program the ROM with
-  whatever machine code you want.
-
- */
-
-
-
-byte ROM[] = {
-	// ADC : 0xFF00
-	0x18,
-	0xA5, 0x20, 
-	0x65, 0x22,
-	0x85, 0x24,
-	0xA5, 0x21, 
-	0x65, 0x23,
-	0x85, 0x25,
-	// SBC : 0xFF0D
-	0x38,
-	0xA5, 0x30, 
-	0xE5, 0x32,
-	0x85, 0x34,
-	0xA5, 0x31, 
-	0xE5, 0x33,
-	0x85, 0x35
-};
-
-int main() {
-
-	
-	AppleOn();
-
-	PC = 0xFF0D;
-
-	// ADC Memory
-	SetMemory(0x0020, 0x31);
-	SetMemory(0x0021, 0x11);
-	SetMemory(0x0022, 0xF9);
-	SetMemory(0x0023, 0x0A);
-	// SBC Memory
-	SetMemory(0x0030, 0x34);
-	SetMemory(0x0031, 0x12);
-	SetMemory(0x0032, 0x43);
-	SetMemory(0x0033, 0x01);
-
-	DisplayInit();
-	
-	while(1) {
-		// Computing
-		CallInstructionTable(GetMemory(PC), 0);
-		// Display information
-		PrintInfo();
-		// Wait to proceed
-	WAIT_ON_USER:
-		char c = getch();
-		mvprintw(28, 4, "                                              ");
-		// If user presses enter, get input.
-		if (c == 0x0A) {
-			address a = 0x0000;
-			mvprintw(28, 4, "Enter address: 0x");
-			for (int i = 3; i >= 0; i--) {
-			GET_HEX:
-				c = getch();
-				char cc;
-				if ((c >= '0') && (c <= '9')) {
-					cc = c-'0';
-				}
-				else if ((c >= 'A') && (c <= 'F')) {
-					cc = c-'A'+10;
-				}
-				else {
-					goto GET_HEX;
-					// Direct all complaints to /dev/null
-				}
-				mvaddch(28, 24-i, c);
-				a |= ((address)cc) << 4*i;
-			}
-			mvprintw(28, 25, " -> %02x", GetMemory(a));
-			goto WAIT_ON_USER;
-		}
-	}
-
-	DisplayClose();
-
-	return 0;
-}
diff --git a/src/video/interface.h b/src/video/interface.h
index dc074b2..16cc965 100644
--- a/src/video/interface.h
+++ b/src/video/interface.h
@@ -6,17 +6,16 @@
 #include "../cpu/core.h"
 #include <stdlib.h>
 
-// Common procedure for taking in user input.
-byte UserInput();
 
-// Common way to print processor information.
-void PrintInfo();
-
-// Initialization procedure for the terminal
+// Initialize the video system.
 void DisplayInit();
 
-// Exit procedure for the terminal.
+// Shut down the video system.
 void DisplayClose();
 
-// Deliver an Apple ASCII character to the terminal.
+// Display a character on the screen.
 void DisplayInput(byte n);
+
+
+// Print information on the video system.
+void PrintInfo();
diff --git a/src/video/ncurses.c b/src/video/ncurses.c
index e9be9b2..3b22231 100644
--- a/src/video/ncurses.c
+++ b/src/video/ncurses.c
@@ -8,17 +8,14 @@
 #include"../cpu/6502.h"
 
 
-int TermX = 0;
-int TermY = 0;
+int   TermX = 0;
+int   TermY = 0;
 
 WINDOW *AppleWindow;
 
-
 byte* VRAM;
-
-int vPosition = 0;
-
-int vOffset = 0;
+int   vPosition = 0;
+int   vOffset = 0;
 
 
 void PrintInfo()
@@ -69,11 +66,11 @@ void DisplayInit()
         mvaddch(i,  0, ' ');
         mvaddch(i, 41, ' ');
     }
-    mvprintw(25, 0, " ~                                        ");
-    mvprintw(26, 0, "             Alekseis Apple I             ");
-    mvprintw(27, 0, "                                          ");
+    mvprintw(25, 0, "                                          ");
     attroff(A_REVERSE);
 
+	
+
 	// Create seperate Apple screen window.
     AppleWindow = newwin(24, 40, 1, 1);