/*****************************************************************************//*                                                                           *//*                                  _6522.h                                  *//*                                                                           *//*		  Internal include file, do not use directly                 *//*                                                                           *//*                                                                           *//*                                                                           *//* (C) 2004 Stefan Haubenthal <polluks@sdf.lonestar.org>                     *//*                                                                           *//*                                                                           *//* This software is provided 'as-is', without any expressed or implied       *//* warranty.  In no event will the authors be held liable for any damages    *//* arising from the use of this software.                                    *//*                                                                           *//* Permission is granted to anyone to use this software for any purpose,     *//* including commercial applications, and to alter it and redistribute it    *//* freely, subject to the following restrictions:                            *//*                                                                           *//* 1. The origin of this software must not be misrepresented; you must not   *//*    claim that you wrote the original software. If you use this software   *//*    in a product, an acknowledgment in the product documentation would be  *//*    appreciated but is not required.                                       *//* 2. Altered source versions must be plainly marked as such, and must not   *//*    be misrepresented as being the original software.                      *//* 3. This notice may not be removed or altered from any source              *//*    distribution.                                                          *//*                                                                           *//*****************************************************************************/#ifndef __VIA_H#define __VIA_H/* Define a structure with the 6522 register offsets. * NOTE: The timer registers are not declared as 16 bit registers, because * the order in which the two 8 bit halves are written is important, and * the compiler doesn't guarantee any order when writing 16 bit values. */struct __6522 {    unsigned char	prb;		/* Port register B */    unsigned char	pra;		/* Port register A */    unsigned char	ddrb;		/* Data direction register B */    unsigned char	ddra;		/* Data direction register A */    unsigned char	t1_lo;		/* Timer 1, low byte */    unsigned char	t1_hi;		/* Timer 1, high byte */    unsigned char	t1l_lo;		/* Timer 1 latch, low byte */    unsigned char	t1l_hi;		/* Timer 1 latch, high byte */    unsigned char	t2_lo;		/* Timer 2, low byte */    unsigned char	t2_hi;		/* Timer 2, high byte */    unsigned char	sr;		/* Shift register */    unsigned char	acr;		/* Auxiliary control register */    unsigned char	pcr;		/* Peripheral control register */    unsigned char	ifr;		/* Interrupt flag register */    unsigned char	ier;		/* Interrupt enable register */    unsigned char	pra2;		/* Port register A w/o handshake */};/* End of _6522.h */#endif