TITLE   "mp2.a, Machine Problem 2 by Douglas W. Jones"
;               This code is based on the Hello World program
;               from Chapter 5 of the 22C:60 course notes.

        S       START
        USE     "hawk.macs"
        USE     "monitor.h"
        EXT     UNUSED

; the program starts here!
START:  LIL     R2,UNUSED       ; set up the stack
                                ;  --- begin aplication code
        LIL     R1,DSPINI
        JSRS    R1,R1           ; initialize the display

        ADDI    R3,R3,-NAMELEN                             ; added code
        SR      R3,1            ; x = (width-namelen)/2:   ; added code
        SR      R4,1            ; y = height/2             ; added code

        LIL     R1,DSPAT                                   ; added code
        JSRS    R1,R1           ; set screen coordinates   ; added code

        LIL     R3,NAME                                    ; changed line
        LIL     R1,DSPST
        JSRS    R1,R1           ; output (NAME)
                                ;  --- end aplication code     
        LIL     R1,EXIT
        JSRS    R1,R1           ; stop!

        ; --- begin aplication constants
NAME:   ASCII   "Douglas W. Jones"                         ; changed line
NAMELEN =       . - NAME        ; record of string length  ; added code
        B       0               ; null marks end of string ; added code

        END