Add Novell NetWare 2.x Card Key emulation

src/include/86box/86box.h

@@ -124,6 +124,7 @@ extern int      video_framerate;            /* (C) video */
 extern int      gfxcard[2];                 /* (C) graphics/video card */
 extern char     video_shader[512];          /* (C) video */
 extern int      bugger_enabled;             /* (C) enable ISAbugger */
+extern int      novell_keycard_enabled;     /* (C) enable Novell NetWare 2.x key card emulation. */
 extern int      postcard_enabled;           /* (C) enable POST card */
 extern int      unittester_enabled;         /* (C) enable unit tester device */
 extern int      isamem_type[];              /* (C) enable ISA mem cards */

src/include/86box/novell_cardkey.h

@@ -0,0 +1,37 @@
+/*
+ * 86Box    A hypervisor and IBM PC system emulator that specializes in
+ *          running old operating systems and software designed for IBM
+ *          PC systems and compatibles from 1981 through fairly recent
+ *          system designs based on the PCI bus.
+ *
+ *          This file is part of the 86Box distribution.
+ *
+ *          Implementation of the Novell NetWare 2.x Key Card, which
+ *          was used for anti-piracy protection.
+ *
+ *
+ * Authors: Cacodemon345
+ *
+ *          Copyright 2024 Cacodemon345.
+ */
+#ifndef NOVELL_KEYCARD_H
+#define NOVELL_KEYCARD_H
+
+/* I/O port range used. */
+#define NOVELL_KEYCARD_ADDR    0x23a
+#define NOVELL_KEYCARD_ADDRLEN 6
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Global variables. */
+extern const device_t novell_keycard_device;
+
+/* Functions. */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*BUGGER_H*/