fix kp values

system/keypad.s65

@@ -18,6 +18,7 @@ INCLUDE_KEYPAD = 1
 
 .zeropage
 _KP_COLUMN:         .res 1  ; for storing stuff
+_KP_DEBUG_VAL:      .res 1  ; for storing the last char DEBUG
 
 .bss  ; reserve space or ringbuffer
 KP_BUF_SIZE = 10
@@ -90,6 +91,8 @@ RBUF_MEM_END = RBUF_MEM_START + KP_BUF_SIZE - 1
     rts
 @kp_write:
     lda _KP_VALUES,x
+    ; TODO use ringbuffer
+    sta _KP_DEBUG_VAL
     jsr rb_keypad_write
     rts
 .endproc
@@ -97,9 +100,9 @@ RBUF_MEM_END = RBUF_MEM_START + KP_BUF_SIZE - 1
 .rodata
 _KP_VALUES:
     .byte "174*"
-    .byte "396#"
     .byte "2850"
-    .byte "ABCD"
+    .byte "396#"
+    .byte "ACBD"
     ; keypad conencted so that 
     ; row 1 = PA0
     ; row 2 = PA2