diff --git a/related_info/lab1/Makefile b/related_info/lab1/Makefile
new file mode 100644
index 0000000..e190775
--- /dev/null
+++ b/related_info/lab1/Makefile
@@ -0,0 +1,6 @@
+all: write
+
+write: defines.h write.s
+	gcc -o write write.s
+clean:
+	rm write write.o
diff --git a/related_info/lab1/defines.h b/related_info/lab1/defines.h
new file mode 100644
index 0000000..1dd7b48
--- /dev/null
+++ b/related_info/lab1/defines.h
@@ -0,0 +1,26 @@
+SYS_exit		= 1
+SYS_fork		= 2
+SYS_write		= 4
+SYS_open		= 5
+SYS_close		= 6
+SYS_execve 		= 11
+SYS_lseek		= 19
+SYS_dup2		= 63
+SYS_mmap 		= 90
+SYS_munmap		= 91
+SYS_socketcall		= 102
+SYS_socketcall_socket	= 1
+SYS_socketcall_bind	= 2
+SYS_socketcall_listen	= 4
+SYS_socketcall_accept	= 5
+
+SEEK_END		= 2
+PROT_READ		= 1
+MAP_SHARED		= 1
+
+AF_INET			= 2
+SOCK_STREAM		= 1
+IPPROTO_TCP		= 6
+	
+
+STDOUT			= 1
diff --git a/related_info/lab1/write.s b/related_info/lab1/write.s
new file mode 100644
index 0000000..11b1de7
--- /dev/null
+++ b/related_info/lab1/write.s
@@ -0,0 +1,14 @@
+.include "defines.h"
+.data
+hello:
+	.string "hello world\n"
+
+.globl	main
+main:
+	movl	$SYS_write,%eax
+	movl	$STDOUT,%ebx
+	movl	$hello,%ecx
+	movl	$12,%edx
+	int	$0x80
+
+	ret