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+/* SP12: A serial programmer for working with Atmel AT90S uCs */
+/* Copyright (C) 1997-2003 Ken Huntington, Kevin Towers, Pitronics. */
+
+/* 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. */
+
+/* Pitronics can be reached by email: sbolt@xs4all.nl */
+/* Kevin Towers can be reached by email: ktowers@omnexcontrols.com */
+/* Ken Huntington can be reached by email: kenh@compmore.net */
+
+#ifdef WIN32
+
+#include <windows.h>
+#include <stdio.h>
+
+/*
+To install the device driver you need Dale Roberts' device driver giveio.sys
+(http://www.ddj.com/ftp/1996/1996.05/directio.zip) and the program instdrv.exe
+(instdrv.zip) from the device driver kit (DDK) for Windows NT.
+ Installation instructions
+
+ * Copy the driver giveio.sys from the archive directio.zip into %SystemRoot%\system32\drivers.
+ * Use command line to install the driver using instdrv:
+ instdrv giveio %SystemRoot%\system32\drivers\giveio.sys
+
+ * In order to start this driver at every reboot automatically, change the start up behaviour to automatic:
+ 2000/XP: start regedit and change the value of the key "Start" in
+ "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\giveio" to 2.
+ NT: Control Panel->Devices->giveio->Start Up->Automatic.
+
+*/
+
+void win_giveio(void)
+ {
+ HANDLE hDevice;
+
+ if(INVALID_HANDLE_VALUE==(hDevice=CreateFile("\\\\.\\giveio",GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL))){
+ fprintf(stderr, "Couldn't access giveio device\n");
+ exit(1);
+ }
+ CloseHandle(hDevice);
+ }
+
+
+void delay(int mseconds)
+ {
+ Sleep((DWORD)mseconds);
+ }
+
+inline unsigned char inportb (const unsigned short port)
+ {
+ register unsigned char val;
+
+ __asm __volatile ("inb %%dx,%%al" : "=a" (val) : "d" (port));
+ return val;
+ }
+
+inline void outportb (unsigned short port, const unsigned char val)
+ {
+ __asm __volatile ("outb %%al,%%dx" :: "a" (val) , "d" (port));
+ }
+#endif
+