Bug Fix for DS5RTC Driver

- The SETBYT routine was broken.  This fixes it.

Source/HBIOS/ds5rtc.asm

@@ -264,10 +264,10 @@ DS5RTC_SETBYT:
 	LD	A,C			; INDEX TO A
 	ADD	A,$20			; NVRAM STARTS AT REG $20
 	LD	C,A			; BACK TO REG C
+	LD	A,E			; VALUE TO A
 	CALL	DS5RTC_WPOFF		; DISABLE WRITE PROTECT
 	CALL	DS5RTC_PUT		; DO IT
 	CALL	DS5RTC_WPOFF		; ENABLE WRITE PROTECT
-	LD	E,A			; MOVE RESULT TO E
 	XOR	A			; SIGNAL SUCCESS
 	RET				; DONE
 ;