Cleanup BASIC sources

rom/extra.s

@@ -1,38 +1,35 @@
 .segment "EXTRA"
 
-.ifdef KIM
-.include "kim_extra.s"
-.endif
+LOAD:
+        rts
 
-.ifdef CONFIG_CBM1_PATCHES
-.include "cbm1_patches.s"
-.endif
+SAVE:
+        rts
 
-.ifdef KBD
-.include "kbd_extra.s"
-.endif
+ISCNTC:
+        lda $BC01
+        cmp #$03
+        beq @break
+        rts
+@break:
+        jmp STOP
 
-.ifdef APPLE
-.include "apple_extra.s"
-.endif
+MONRDKEY:
+        lda $BC01
+        bmi @skipped
+        sta $BC00       ; echo
+@skipped:
+        rts
 
-.ifdef MICROTAN
-.include "microtan_extra.s"
-.endif
+MONCOUT:
+        sta $BC00
 
-.ifdef AIM65
-.include "aim65_extra.s"
-.endif
+        rts
 
-.ifdef SYM1
-        .byte   0,0,0
-.endif
-
-.ifdef W65C816SXB
-.include "w65c816sxb_extra.s"
-.endif
-
-.ifdef KILIAN
-.include "kilian_extra.s"
+.segment "WOZMON"
 .include "wozmon.s"
-.endif
+
+.segment "RESETVEC"
+        .word   $0000           ; NMI vector
+        .word   RESET           ; RESET vector
+        .word   $0000           ; IRQ vector