Added programs to properly test inter-segment file read and write

Makefile

@@ -1,8 +1,9 @@
-disk.img: boot.sector kernel.bin hello.bin
+disk.img: boot.sector kernel.bin hello.bin print.bin hello.txt
 	dd if=/dev/zero of=disk.img count=43 bs=100k
 	dd if=boot.sector of=disk.img conv=notrunc
 	mount disk.img img.d
 	cp *.bin img.d/
+	cp hello.txt img.d/
 	umount img.d
 	chmod 777 disk.img
 
@@ -14,3 +15,6 @@ kernel.bin: kernel.asm
 
 hello.bin: hello.asm
 	nasm hello.asm -o $@
+
+print.bin: print.asm
+	nasm print.asm -o $@

hello.txt

@@ -0,0 +1,5 @@
+HELLO WORLD!
+
+THIS IS A TEST MESSAGE TO SEE IF I CAN LOAD AND PRINT THIS FILE!
+
+WOOOOOOO

print.asm

@@ -0,0 +1,36 @@
+  mov ax, 3000h
+  mov ds, ax
+
+  mov si, filename
+  mov ah, 4
+  int 22h
+
+  cmp ax, 0
+  je error
+
+  mov si, ax
+  mov di, 0
+  mov bx, 4000h
+  mov ah, 3
+  int 22h
+
+  mov ax, 4000h
+  mov ds, ax
+  mov si, 0
+  mov ah, 1
+  int 22h
+
+  mov ax, 2000h
+  mov ds, ax
+  jmp exit
+
+error:
+  mov si, err_msg
+  mov ah, 1
+  int 22h
+
+exit:
+  retf
+
+filename db "HELLO   TXT"
+err_msg db "HELLO.TXT Missing!"