$NOMOD51                ;der Modus fuer 8051 wird abgeschaltet
$debug
$nolist                 ;es wird kein Listing fuer reg535 erstellt
$include(C8051F340.inc) ;die C8051F340-spezifischen Daten
$list                   ;es wird ein Listing erstellt
$title (VC_2_DIR_DADR.A51)
;------------------------------------------------------------------------
;Programmbeschreibung
;------------------------------------------------------------------------
;Programm:
;;Programm:
;T1 --> "Hallo Welt" in internen Speicher ab 30h
;Debug: D:0x30 Speicherbereich ansehen
;
;
;
;Erstellt am: Freitag, 9. Januar 2009 20:10:27 
;Programmiert: Juergen Walter  
;
;Verwendete Einspruenge: keine
;
;Verwendete Unterprogramme: keine
;
;
;Verwendete Register und Variable:
;Registerbank(0)
;R2
;
;Kommentar:
;
;Aenderungen:
;Geaendert am: Freitag, 9. Januar 2009 20:10:27
;
;
;------------------------------------------------------------------------
;Initialisierungsteil fuer allgemeine Konstanten
;------------------------------------------------------------------------


CSEG AT 0H              ;Legt absolute Codesegmentadresse auf 0h
call Init_Device		;Aufruf zur Initialisierung der Controller Funktionen
ljmp INIT
;
;------------------------------------------------------------------------
;Interrupt-Vektoren
;------------------------------------------------------------------------
;ORG 

;------------------------------------------------------------------------
;Initialisierungsteil fuer On-Chip Peripherie
;------------------------------------------------------------------------
ORG 100H                ;Programmstart bei 100H
INIT:
call Init_Device

;------------------------------------------------------------------------
;Programmschleife
;------------------------------------------------------------------------

ABFRAGE:
jnb P1.1,SCHREIBE	;T1?
jmp ABFRAGE

SCHREIBE:
mov 30h,#'H'
mov	31h,#'A'
mov	32h,#'L'
mov	33h,#'L'
mov	34h,#'O'
mov	35h,#' '
mov	36h,#'W'
mov	37h,#'E'
mov	38h,#'L'
mov	39h,#'T'
jmp ABFRAGE

; Peripheral specific initialization functions,
; Called from the Init_Device label
PCA_Init:
    anl  PCA0MD,    #0BFh
    mov  PCA0MD,    #000h
    ret

Port_IO_Init:
    ; P0.0  -  Unassigned,  Push-Pull,  Digital
    ; P0.1  -  Unassigned,  Push-Pull,  Digital
    ; P0.2  -  Unassigned,  Push-Pull,  Digital
    ; P0.3  -  Unassigned,  Push-Pull,  Digital
    ; P0.4  -  Unassigned,  Push-Pull,  Digital
    ; P0.5  -  Unassigned,  Push-Pull,  Digital
    ; P0.6  -  Unassigned,  Push-Pull,  Digital
    ; P0.7  -  Unassigned,  Push-Pull,  Digital

    ; P1.0  -  Unassigned,  Push-Pull,  Digital
    ; P1.1  -  Skipped,     Push-Pull,  Digital
    ; P1.2  -  Skipped,     Push-Pull,  Digital
    ; P1.3  -  Skipped,     Push-Pull,  Digital
    ; P1.4  -  Unassigned,  Push-Pull,  Digital
    ; P1.5  -  Unassigned,  Push-Pull,  Digital
    ; P1.6  -  Unassigned,  Push-Pull,  Digital
    ; P1.7  -  Unassigned,  Push-Pull,  Digital

    ; P2.0  -  Unassigned,  Push-Pull,  Digital
    ; P2.1  -  Unassigned,  Push-Pull,  Digital
    ; P2.2  -  Unassigned,  Push-Pull,  Digital
    ; P2.3  -  Unassigned,  Push-Pull,  Digital
    ; P2.4  -  Unassigned,  Push-Pull,  Digital
    ; P2.5  -  Unassigned,  Push-Pull,  Digital
    ; P2.6  -  Unassigned,  Push-Pull,  Digital
    ; P2.7  -  Unassigned,  Push-Pull,  Digital

    ; P3.0  -  Unassigned,  Push-Pull,  Digital
    ; P3.1  -  Unassigned,  Push-Pull,  Digital
    ; P3.2  -  Skipped,     Push-Pull,  Digital
    ; P3.3  -  Skipped,     Push-Pull,  Digital
    ; P3.4  -  Skipped,     Push-Pull,  Digital
    ; P3.5  -  Unassigned,  Push-Pull,  Digital
    ; P3.6  -  Unassigned,  Push-Pull,  Digital
    ; P3.7  -  Unassigned,  Push-Pull,  Digital

    mov  P0MDOUT,   #0FFh
    mov  P1MDOUT,   #0FFh
    mov  P2MDOUT,   #0FFh
    mov  P3MDOUT,   #0FFh
    mov  P1SKIP,    #00Eh
    mov  P3SKIP,    #01Ch
    mov  XBR1,      #040h
    ret

Oscillator_Init:
    mov  OSCICN,    #083h
    mov  CLKMUL,    #080h
    clr  A                     ; Wait 5us for initialization
    djnz ACC,       $
    orl  CLKMUL,    #0C0h
Osc_Wait2:
    mov  A,         CLKMUL
    jnb  ACC.5,     Osc_Wait2
    ret

; Initialization function for device,
; Call Init_Device from your main program
Init_Device:
    lcall PCA_Init
    lcall Port_IO_Init
    lcall Oscillator_Init
    ret

end