terminal

5 files changed, 53 insertions, 14 deletions

diff --git a/src/apple.h b/src/apple.h
index 64542de..ea1f04e 100644
--- a/src/apple.h
+++ b/src/apple.h
@@ -2,6 +2,7 @@
 #define APPLE_H
 
 #include "cpu/core.h"
+#include <stdlib.h>
 
 #define MEMORY_SIZE 4096
 
diff --git a/src/main.c b/src/main.c
index 5e7bfa2..8b07189 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,6 @@
 #include "apple.h"
 #include "video/interface.h"
+#include <ncurses.h>
 
 int main() {
 	
@@ -7,8 +8,9 @@ int main() {
 
 	AppleOn();
 
-	TerminalPrompt();
-	getch();
+	while(1) {
+		TerminalInput(getch());
+	}
 
 	TerminalClose();
 
diff --git a/src/video/interface.h b/src/video/interface.h
index db9bd54..49ac75c 100644
--- a/src/video/interface.h
+++ b/src/video/interface.h
@@ -5,6 +5,4 @@ void TerminalInit();
 
 void TerminalClose();
 
-void TerminalInput(char n);
-
-void TerminalPrompt();
\ No newline at end of file
+void TerminalInput(char n);
\ No newline at end of file
diff --git a/src/video/ncurses.c b/src/video/ncurses.c
index 05653e2..76bfb26 100644
--- a/src/video/ncurses.c
+++ b/src/video/ncurses.c
@@ -15,30 +15,65 @@ void TerminalInit()
     initscr();
     cbreak();
     noecho();
+    curs_set(0);
 
     TerminalShiftRegister = (byte*)malloc(960);
+    TerminalShiftRegisterPosition = TerminalShiftRegister;
     TerminalShiftRegisterOffset = 0;
 }
 
 void TerminalClose()
 {
     free(TerminalShiftRegister);
+    curs_set(0);
     endwin();
 }
 
-void TerminalInput()
+void TerminalInput(char n)
 {
+    mvaddch(TermY,TermX,n);
+
+    *TerminalShiftRegisterPosition = n;
+    TerminalShiftRegisterPosition++;
+    if (TerminalShiftRegisterPosition >= (TerminalShiftRegister + 960))
+        TerminalShiftRegisterPosition = TerminalShiftRegister;
+    
+
+    TermX++;
+
+    if (n == KEY_ENTER) {
+        TermY++;
+    }
+
     if (TermX >= 40) {
         TermX = 0;
         TermY++;
     }
 
     if (TermY >= 24) {
-        
+        TerminalShiftRegisterOffset += 40; // Discard first line
+        if (TerminalShiftRegisterOffset >= 960)
+            TerminalShiftRegisterOffset = TerminalShiftRegister;
+
+        byte *offset = TerminalShiftRegister + TerminalShiftRegisterOffset;
+
+        // For every position, fill with contents of the terminal shift register
+        for (int i = 0; i < 23; i++) {
+        for (int j = 0; j < 40; j++) {
+
+            if (offset >= (TerminalShiftRegister + 960))
+                offset -= 960;
+            
+            mvaddch(i,j, *(offset));
+            offset++;
+        }}
+
+        TermY = 23;
+        TermX = 0;
+
+        // Clear bottom line.
+        mvwprintw(stdscr, TermY, TermX, "                                        ");
     }
-}
 
-void TerminalPrompt()
-{
-    addch('@' | A_BLINK);
+    mvaddch(TermY, TermX, '@' | A_BLINK);
 }
\ No newline at end of file
diff --git a/src/video/signetics.c b/src/video/signetics.c
index 944ac4d..c6dca10 100644
--- a/src/video/signetics.c
+++ b/src/video/signetics.c
@@ -1,6 +1,7 @@
 //	signetics.h
-//	The Apple I came with its own terminal on-board, with a Signetics 2513 character ROM, and multiple shift registers acting as video memory.
-#include"cpu/core.h"
+//	Signetics refers to the various Signetics brand chips which the Apple I came with, including a character ROM, and a shift-register based video memory.
+
+#include"../cpu/core.h"
 #include"stdlib.h"
 
 const byte CharacterROM[0x40] = {
@@ -10,7 +11,9 @@ const byte CharacterROM[0x40] = {
 	'0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' , '8' , '9' , ':' , ';' , '<' , '=' , '>' , '?'
 };
 
-byte* TerminalShiftRegister;
+const byte* TerminalShiftRegister;
+
+byte* TerminalShiftRegisterPosition;
 
 int TerminalShiftRegisterOffset;