initial checkin from subversion

hello/hello.asm

@@ -0,0 +1,27 @@
+;  hello.asm  a first program for nasm for Linux, Intel, gcc
+;
+; assemble:	nasm -f elf -l hello.lst  hello.asm
+; link:		gcc -o hello  hello.o
+; run:	        hello 
+; output is:	Hello World 
+
+	SECTION .data		; data section
+msg:	db "Hello World",10	; the string to print, 10=cr
+len:	equ $-msg		; "$" means "here"
+				; len is a value, not an address
+
+	SECTION .text		; code section
+        global main		; make label available to linker 
+main:				; standard  gcc  entry point
+	
+	mov	edx,len		; arg3, length of string to print
+	mov	ecx,msg		; arg2, pointer to string
+	mov	ebx,1		; arg1, where to write, screen
+	mov	eax,4		; write sysout command to int 80 hex
+	int	0x80		; interrupt 80 hex, call kernel
+	
+	mov	ebx,0		; exit code, 0=normal
+	mov	eax,1		; exit command to kernel
+	int	0x80		; interrupt 80 hex, call kernel
+   
+