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-rw-r--r--qemu/roms/openbios/forth/lib/string.fs14
-rw-r--r--qemu/roms/openbios/forth/system/ciface.fs8
2 files changed, 22 insertions, 0 deletions
diff --git a/qemu/roms/openbios/forth/lib/string.fs b/qemu/roms/openbios/forth/lib/string.fs
index eb6474917..f97db232f 100644
--- a/qemu/roms/openbios/forth/lib/string.fs
+++ b/qemu/roms/openbios/forth/lib/string.fs
@@ -125,3 +125,17 @@
: parse-hex ( str len -- value )
base @ hex -rot $number if 0 then swap base !
;
+
+
+\ -----------------------------------------------------
+\ miscellaneous functions
+\ -----------------------------------------------------
+
+: rot13 ( c - c )
+ dup upc [char] A [char] M between if d# 13 + exit then
+ dup upc [char] N [char] Z between if d# 13 - then
+;
+
+: rot13-str ( str len -- newstr len )
+ strdup 2dup bounds ?do i c@ rot13 i c! loop
+;
diff --git a/qemu/roms/openbios/forth/system/ciface.fs b/qemu/roms/openbios/forth/system/ciface.fs
index fd6c54efd..85a607627 100644
--- a/qemu/roms/openbios/forth/system/ciface.fs
+++ b/qemu/roms/openbios/forth/system/ciface.fs
@@ -326,6 +326,14 @@ external
: exit ( -- )
." EXIT"
+
+ \ Execute (exit) hook if one exists
+ s" (exit)" $find if
+ execute
+ else
+ 2drop
+ then
+
outer-interpreter
;