diff --git a/rom5x/B1_FB3C_rom5x_dispatch.s b/rom5x/B1_FB3C_rom5x_dispatch.s
new file mode 100644
index 0000000..c25e0a7
--- /dev/null
+++ b/rom5x/B1_FB3C_rom5x_dispatch.s
@@ -0,0 +1,39 @@
+#include "iic+.defs"
+.text
+* = $fb3c ; ~165 bytes free here
+	cmp #$a9		; reset patch
+	bne chk2
+	jmp reset5x
+chk2:	cmp #$ea		; boot patch
+	bne chk3
+	jmp boot5x
+chk3:	cmp #$40		; beep
+	bne dowait
+; "classic air raid beep"
+; inspired by http://quinndunki.com/blondihacks/?p=2471
+	jsr $fcb5		; (new) WAIT for .1 sec delay
+	ldy #$c0
+obell2:	lda #$0c
+	jsr owait		; old wait for correct sound
+	lda $c030
+	dey
+	bne obell2
+	bra dexit		; back to caller
+dowait:	jsr $fcb5		; do delay if anything else
+	lda #>($fbe2-1)		; return to other bank here (in BELL1)
+	pha			; by pushing address onto
+	lda #<($fbe2-1)		; the stack
+	pha
+	lda #$00		; in case someone assumes this
+dexit:	jmp swrts2		; back to other bank
+; old wait - no ACIA access to enforce delay at
+; accelerated speeds, speaker delay tkes care of it
+; when we do the old beep
+owait:	sec
+owait2:	pha
+owait3: sbc #$01
+	bne owait3
+	pla
+	sbc #$01
+	bne owait2
+	rts
diff --git a/rom5x/B1_FBE2_bell1_hijack_b1.s b/rom5x/B1_FBE2_bell1_hijack_b1.s
new file mode 100644
index 0000000..8fe7472
--- /dev/null
+++ b/rom5x/B1_FBE2_bell1_hijack_b1.s
@@ -0,0 +1,5 @@
+#include "iic+.defs"
+.text
+* = $fbe2 ; ~29 bytes free here
+	jmp $fb3c
+
diff --git a/rom5x/B1_FBE2_rom5x_dispatch.s b/rom5x/B1_FBE2_rom5x_dispatch.s
deleted file mode 100644
index 709dcaa..0000000
--- a/rom5x/B1_FBE2_rom5x_dispatch.s
+++ /dev/null
@@ -1,17 +0,0 @@
-#include "iic+.defs"
-.text
-* = $fbe2 ; ~29 bytes free here
-	cmp #$a9		; reset patch
-	bne chk2
-	jmp reset5x
-chk2:	cmp #$ea		; boot patch
-	bne dowait
-	jmp boot5x
-dowait:	jsr $fcb5		; do delay if anything else
-	lda #>($fbe2-1)		; return to other bank here
-	pha			; by pushing address onto
-	lda #<($fbe2-1)		; the stack
-	pha
-	lda #$00		; in case someone assumes this
-	jmp swrts2		; back to other bank
-	; 28 bytes, will have to move if we get bigger
diff --git a/rom5x/Rakefile b/rom5x/Rakefile
index 3898693..00148f1 100644
--- a/rom5x/Rakefile
+++ b/rom5x/Rakefile
@@ -39,7 +39,7 @@ task :build_rom => [:assemble] do
       puts "Loading #{t} into bank #{bnum} @ $#{badd.to_s(16)}, file addr $#{addr.to_s(16)}, len $#{fl.to_s(16)} (#{fl})"
       nzc = 0
       fc.each_byte do |b|
-        nzc += 1 if rom.getbyte(addr) != 0
+        nzc += 1 if rom.getbyte(addr) != 0 && rom.getbyte(addr) != b
         rom.setbyte(addr, b)
         addr += 1
       end