; > hello.mac
;
; Hello World for PDP-11 running Unix

ORG  0				; Position independant code
EQUW &0107			; Magic number &o000407, also branch to Startup
EQUW CodeEnd-Startup		; size of text
EQUW DataEnd-CodeEnd		; size of initialised data
EQUW ObjectEnd-DataEnd		; size of uninitialised data
EQUW &0000			; size of symbol data
EQUW &0000			; entry point
EQUW &0000			; not used
EQUW &0001			; no relocation info
;
ORG  0				; Position independant code
.Startup
;
mov #1,r0			; r0=STDOUT
trap 4				; write()
equw hello			; Start of data
equw hello_end-hello		; Length of data
;
trap 1				; exit()
halt				; drop to monitor

.hello
equs "Hello world!",10,13
.hello_end
align

.CodeEnd
.DataEnd
.ObjectEnd