[OpenBIOS] [PATCHv2 18/20] display.fs: add implementation of fb8-insert-lines.

[Mark Cave-Ayland]

Signed-off-by: Mark Cave-Ayland 
---
 openbios-devel/forth/device/display.fs |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/openbios-devel/forth/device/display.fs b/openbios-devel/forth/device/display.fs
index 080087c..a4f11b8 100644
--- a/openbios-devel/forth/device/display.fs
+++ b/openbios-devel/forth/device/display.fs
@@ -259,6 +259,14 @@ defer fb8-invertrect
   ;

: fb8-insert-lines ( n -- )
+  \ numcopy = ( #lines - n )
+  #lines over - char-height *
+  over line# char-height *
+  swap char-height * over +
+  fb8-copy-lines
+  
+  char-height * line# char-height *
+  fb8-clear-lines
   ;

: fb8-delete-lines ( n -- )