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+====== Print Stringchain ======
+Prints a stored textchain on a C64 (like $AB1E).
+<code>
+BSOUT  = $ffd2	; print value in accu on screen
+TXTOUT_LB = $22	; pointer for text lb address (unused memory on zeropage)
+TXTOUT_HB = $23	; pointer for text hb address (unused memory on zeropage)
+        LDA #<txt2	; HB address of text
+	sta TXTOUT_HB	; store on HB Text pointer
+	LDY #>txt2	; LB address of text
+	sta TXTOUT_LB	; store on HB Text pointer
+	jsr TXTOUT      ; print 'HELLO WORLD.'
+        rts             ; bye
+;**************************
+;
+;**************************
+TXTOUT	ldy #$00        ; set index to zero
+t0	lda (TXTOUT_LB),y ; get char
+	beq end		; Text end?
+	jsr BSOUT	; print char
+	iny		; index next char
+	jmp t0		; loop
+end	rts		; bye
+txt0 byte "HELLO WORLD.",$0d,0
+</code>