Import of all sources.

src/nmi.c

@@ -0,0 +1,62 @@
+/*
+ * VARCem	Virtual Archaelogical Computer EMulator.
+ *		An emulator of (mostly) x86-based PC systems and devices,
+ *		using the ISA,EISA,VLB,MCA  and PCI system buses, roughly
+ *		spanning the era between 1981 and 1995.
+ *
+ *		This file is part of the VARCem Project.
+ *
+ *		Implementation of the NMI handler.
+ *
+ * Version:	@(#)nmi.c	1.0.1	2018/02/14
+ *
+ * Authors:	Fred N. van Kempen, <decwiz@yahoo.com>
+ *		Miran Grca, <mgrca8@gmail.com>
+ *		Sarah Walker, <tommowalker@tommowalker.co.uk>
+ *
+ *		Copyright 2017,2018 Fred N. van Kempen.
+ *		Copyright 2016-2018 Miran Grca.
+ *		Copyright 2008-2018 Sarah Walker.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free  Software  Foundation; either  version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is  distributed in the hope that it will be useful, but
+ * WITHOUT   ANY  WARRANTY;  without  even   the  implied  warranty  of
+ * MERCHANTABILITY  or FITNESS  FOR A PARTICULAR  PURPOSE. See  the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the:
+ *
+ *   Free Software Foundation, Inc.
+ *   59 Temple Place - Suite 330
+ *   Boston, MA 02111-1307
+ *   USA.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <wchar.h>
+#include "io.h"
+#include "nmi.h"
+
+
+int nmi_mask;
+
+
+void
+nmi_write(uint16_t port, uint8_t val, void *p)
+{
+    nmi_mask = val & 0x80;
+}
+
+
+void
+nmi_init(void)
+{
+    io_sethandler(0x00a0, 1, NULL,NULL,NULL, nmi_write,NULL,NULL, NULL);
+    nmi_mask = 0;
+}