Restructure ROM

Include WOZMON

rom/kilian_extra.s

@@ -0,0 +1,33 @@
+.segment "EXTRA"
+.export MONRDKEY, MONCOUT, LOAD; SAVE; ISCNTC
+
+LOAD:
+        rts
+
+SAVE:
+        rts
+
+ISCNTC:
+        lda $BC01
+        cmp #$03
+        beq @break
+        rts
+@break:
+        jmp STOP
+
+MONRDKEY:
+        lda $BC01
+        bmi @skipped
+        sta $BC00       ; echo
+@skipped:
+        rts
+
+MONCOUT:
+        sta $BC00
+
+        rts
+
+.segment "RESETVEC"
+        .word   $0000           ; NMI vector
+        .word   RESET           ; RESET vector
+        .word   $0000           ; IRQ vector