Modified delete key patch so that it does not use C4xx memory, which

causes a crash when a Mockingboard IIc+ is enabled.

rom5x/B0_C4EE_del_key.s

@@ -1,11 +0,0 @@
-; call RDCHAR, convert DEL to space
-; for patching into GETLN1/NXTCHAR (at $FD75)
-.code
-.include "iic+.defs"
-	.org $c4ee
-	jsr $cced
-	cmp #$ff
-	bne :+
-	lda #$88
-:	rts
-

rom5x/B0_FD10_del_key_part_2.s

@@ -0,0 +1,10 @@
+; patch RDKEY to skip over NOPs and add in additional code for handling
+; delete key.
+.code
+.PC02
+.include "iic+.defs"
+  .org $fd10
+  bra :+            ; skip over the patch
+	lda #$88          ; replace with left arrow code
+  bra $fd7c         ; branch back out of the patch
+:

rom5x/B0_FD75_patch_getln1.s

@@ -1,6 +0,0 @@
-; patch GETLN1 to call delete key handler
-.code
-.include "iic+.defs"
-	.org $fd75
-	jsr $c4ee
-

rom5x/B0_FD78_del_key.s

@@ -0,0 +1,13 @@
+; patch GETLN1 to call delete key handler
+;
+; This patch uses the run of NOPs in RDKEY since there wasn't enough space here
+; (6 bytes needed, 5 available).
+.code
+.include "iic+.defs"
+	.org $fd78
+  cmp #$ff          ; check for delete
+  beq $fd12         ; go to part 2 of the patch
+  cmp #$95          ; check for control-u
+  bne $fd84
+  jsr $cc1d         ; lift char
+