added a couple C examples

test/main.asm

@@ -8,6 +8,7 @@ CONFIG LVP = OFF          ; Low-Voltage Programming off
 CONFIG MCLRE = OFF        ; MCLR pin disabled, RE3 input enabled
 R1 EQU 0x020
 R2 EQU 0x021
+TEMP EQU 0x22
 
     ORG 0x00                 ; Program starts at address 0
 
@@ -16,15 +17,17 @@ Start:
     CLRF TRISD               ; Set all PORTB pins as output
     CLRF LATD                ; Clear PORTB outputs
 
-    CLRF LATB
     BCF INTCON2, 7
-    movlw 0fh           ; Set all pins to digital I/0
-    movwf ADCON1
-    MOVLW 0xFF
+    MOVLW 0fh           ; Set all pins to digital I/0
+    MOVWF ADCON1
+    MOVLW 0xF0
     MOVWF TRISB
+    CLRF LATB
+    ;MOVLW 0x0E
+    ;MOVWF PORTB
 
-loop:
-    movff PORTB, PORTD
-    goto loop
+
+loop: ; Read first nibble of port D and print it to the second nibble
+    MOVFF PORTB, PORTD
 
     END                      ; End of program

test/main.hex

@@ -1,6 +1,6 @@
 :020000040000FA
-:10000000956A8C6A8A6AF19E0F0EC16EFF0E936E1E
-:0800100081CF83FF08EF00F02F
+:10000000956A8C6AF19E0F0EC16EF00E936E8A6A2D
+:0400100081CF83FF1A
 :020000040030CA
 :04000000000C1F1EB3
 :02000500038175