From 7e0f021a9aec35fd8e6725e87e3313b101d26f5e Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Sun, 27 Jan 2008 11:37:44 +0100
Subject: Initial import (2.0.2-6)

---
 reference/C/CONTRIB/SNIP/noctrlc.c | 63 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100755 reference/C/CONTRIB/SNIP/noctrlc.c

(limited to 'reference/C/CONTRIB/SNIP/noctrlc.c')

diff --git a/reference/C/CONTRIB/SNIP/noctrlc.c b/reference/C/CONTRIB/SNIP/noctrlc.c
new file mode 100755
index 0000000..bbc8649
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/noctrlc.c
@@ -0,0 +1,63 @@
+/****************************************************************/
+/* Name: noctrl()                                               */
+/* Desc: captures interrput 9 so as to ignore ctrl-c,ctrl-break,*/
+/*       ctrl-alt-del                                           */
+/****************************************************************/
+
+#include <dos.h>
+
+#if defined(__ZTC__)
+ #define INTERRUPT
+ #define FAR            _far
+ #define ENABLE         int_on
+ #define INPORTB        inp
+ #define OUTPORTB       outp
+#else
+ #include <conio.h>
+ #if defined(__TURBOC__)
+  #define INTERRUPT      interrupt
+  #define FAR            far
+  #define ENABLE         enable
+  #define INPORTB        inportb
+  #define OUTPORTB       outportb
+ #else
+  #define INTERRUPT      _interrupt
+  #define FAR            _far
+  #define ENABLE         _enable
+  #define INPORTB        inp
+  #define OUTPORTB       outp
+ #endif
+#endif
+
+extern void (INTERRUPT FAR *oldint9)(void);     /* Caller must set this */
+
+void INTERRUPT FAR noctrl(void)
+{
+      unsigned char byte;
+      static int flag;
+ 
+      ENABLE();
+ 
+      if ((byte = (unsigned char)INPORTB(0x60)) == 29)
+            flag = 1;
+ 
+      if (byte == 157)
+            flag = 0;
+ 
+      if (!flag)
+            (*oldint9)();
+      else  switch (byte)
+      {
+      case 46 :   /* yeah, these should be #defined! */
+      case 70 :
+      case 56 :
+      case 83 :
+            byte = (unsigned char)INPORTB(0x61);
+            OUTPORTB(0x61,byte | 0x80);
+            OUTPORTB(0x61,byte);
+            OUTPORTB(0x20,0x20);
+            break;
+      default :
+            (*oldint9)();
+      }
+}
-- 
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