diff --git a/.gitignore b/.gitignore
index 5066bd7..7e54e21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,4 +11,5 @@ copyrom.sh
 rom5x/accel5x
 make_rom.sh
 rom.sha256
+**/.DS_Store
 
diff --git a/rom4x/B0_C2F0_del_key.s b/rom4x/B0_C2F0_del_key.s
new file mode 100644
index 0000000..44d1fc5
--- /dev/null
+++ b/rom4x/B0_C2F0_del_key.s
@@ -0,0 +1,11 @@
+; call RDCHAR, convert DEL to space
+; for patching into GETLN1/NXTCHAR (at $FD75)
+.code
+.include "iic.defs"
+	.org $c2f0
+	jsr $cced
+	cmp #$ff
+	bne :+
+	lda #$88
+:	rts
+
diff --git a/rom4x/B0_FD75_patch_getln1.s b/rom4x/B0_FD75_patch_getln1.s
new file mode 100644
index 0000000..f57cf8e
--- /dev/null
+++ b/rom4x/B0_FD75_patch_getln1.s
@@ -0,0 +1,6 @@
+; patch GETLN1 to call delete key handler
+.code
+.include "iic.defs"
+	.org $fd75
+	jsr $c2f0
+