--- /home/jcomeau/shared_documents/reversible.asm	2007-05-02 19:17:04.231747200 -0600
+++ /home/jcomeau/shared_documents/reversible.asm.orig.txt	2007-05-02 19:18:36.103852800 -0600
@@ -33,14 +33,9 @@
 ; has a resolution of 10 bits, with 1023 representing 5V and
 ; 0 representing 0V.
 
-#define use_crystal 1
 #include <p16F917.inc>
 ;	__CONFIG  _DEBUG_ON & _FCMEN_OFF &_IESO_OFF & _BOD_OFF & _CPD_OFF & _CP_OFF & _MCLRE_ON & _PWRTE_OFF & _WDT_OFF & _INTOSC ; _EXTRC ;   
-#ifndef use_crystal
 	__CONFIG  _FCMEN_OFF &_IESO_OFF & _BOD_OFF & _CPD_OFF & _CP_OFF & _MCLRE_ON & _PWRTE_OFF & _WDT_OFF & _INTOSC ; _EXTRC ;   
-#else
-	__CONFIG  _FCMEN_OFF &_IESO_OFF & _BOD_OFF & _CPD_OFF & _CP_OFF & _MCLRE_ON & _PWRTE_OFF & _WDT_OFF & _XT_OSC ; _EXTRC ;   
-#endif
 
 	cblock	0x20
 Delay1		; Assign an address to label Delay1
@@ -58,10 +53,6 @@
 	movlw	0xFF
 	movwf	TRISA		; Make PortA all input
 	clrf	TRISD		; Make PortC all output
-#ifndef use_crystal
-	movlw	0x41		; internal oscillator at 1MHz (0x41) 8MHz (0x71)
-	movwf	OSCCON
-#endif
 	movlw	0x10		; A2D Clock Fosc/8
 	movwf	ADCON1
 ;	bcf	STATUS,RP0	; back to Register Page 0