pet.h

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// Copyright 2023 LLVM-MOS Project
// Licensed under the Apache License, Version 2.0 with LLVM Exceptions.
// See https://github.com/llvm-mos/llvm-mos-sdk/blob/main/LICENSE for license
// information.
 
// Originally from cc65. Modified from original version.
 
// clang-format off
 
/*****************************************************************************/
/*                                                                           */
/*                                   pet.h                                   */
/*                                                                           */
/*                      PET system specific definitions                      */
/*                                                                           */
/*                                                                           */
/*                                                                           */
/* (C) 1998-2005 Ullrich von Bassewitz                                       */
/*               Roemerstrasse 52                                            */
/*               D-70794 Filderstadt                                         */
/* EMail:        uz@cc65.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 _PET_H
#define _PET_H
 
 
 
/* Check for errors */
#if !defined(__PET__)
#  error This module may only be used when compiling for the CBM PET!
#endif
 
 
 
/*****************************************************************************/
/*                                   Data                                    */
/*****************************************************************************/
 
 
 
/* Color defines */
#define COLOR_BLACK             0x00
#define COLOR_WHITE             0x01
 
/* Masks for joy_read */
#define JOY_UP_MASK             0x01
#define JOY_DOWN_MASK           0x02
#define JOY_LEFT_MASK           0x04
#define JOY_RIGHT_MASK          0x08
#define JOY_BTN_1_MASK          0x10
 
/* Define hardware */
#include <_pia.h>
#define PIA1    (*(volatile struct __pia*)0xE810)
#define PIA2    (*(volatile struct __pia*)0xE820)
 
#include <_6522.h>
#define VIA     (*(volatile struct __6522*)0xE840)
 
/* All models from 40xx and above */
#include <_6545.h>
#define CRTC    (*(volatile struct __6545)0xE880)
 
/* SuperPET only */
#include <_6551.h>
#define ACIA    (*(volatile struct __6551*)0xEFF0)
 
 
 
/* End of pet.h */
#endif