Introduced getdevicedir() - with implementation for the CBMs.

git-svn-id: svn://svn.cc65.org/cc65/trunk@5840 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm/devicestr.s

@@ -0,0 +1,35 @@
+;
+; Stefan Haubenthal, 2005-06-08
+;
+; CBM device to string
+;
+
+	.export		devicestr
+	.import		pusha0, tosudiva0
+	.importzp	sreg, ptr1, ptr2
+
+	.macpack	generic
+
+;------------------------------------------------------------------------------
+; Convert unit number in A into string representation pointed to by ptr2.
+
+.proc	devicestr
+
+	jsr	pusha0
+	lda	#10
+	jsr	tosudiva0
+	ldy	#0
+	lda	sreg
+	beq	:+		; >=10
+	add	#'0'
+	sta	(ptr2),y
+	iny
+:	lda	ptr1		; rem
+	add	#'0'
+	sta	(ptr2),y
+	iny
+	lda	#0
+	sta	(ptr2),y
+	rts
+
+.endproc