; http://vide.malban.de/help/vectrex-tutorial-ii-starting-with-bios
;***************************************************************************
; DEFINE SECTION
;***************************************************************************
		USE	vectrex.inc		; include file

; start of vectrex memory with cartridge name...
                ORG     0
;***************************************************************************
; HEADER SECTION 
;***************************************************************************
		FCC     "g GCE 1982"
                DB      $80      	        ; 'g' is copyright sign
                DW      music1                  ; music from the rom
                DB      $F8
                DB	$50
                DB	$20
                DB	-$56     ; height, width, rel y, rel x
                                                ; (from 0,0)
                FCC     "HELLO WORLD PROG 1"
                DB      $80                     ; some game information,
                                                ; ending with $80
                DB      0                       ; end of game header
;***************************************************************************
; CODE SECTION
;***************************************************************************
; here the cartridge program starts off
main:
                JSR     Wait_Recal              ; Vectrex BIOS recalibration
                JSR     Intensity_5F            ; Sets the intensity of the
                                                ; vector beam to $5f
                LDU     #hello    		 ; address of string
                LDA     #$10                    ; Text position relative Y
                LDB     #-$50                   ; Text position relative X
                JSR     Print_Str_d             ; Vectrex BIOS print routine
                BRA     main                    ; and repeat forever
;***************************************************************************
; DATA SECTION
;***************************************************************************
hello:
                FCC  "HELLO WORLD"              ; only capital letters
                DB   $80                        ; $80 is end of string
;***************************************************************************
                END  main
;***************************************************************************