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/*

 * mc68230.h -- Low level support code for the Motorola 68230 Parallel

 *              Interface/Timer (PIT)

 *

 * Modified by Doug McBride, Colorado Space Grant College

 *

 * Format taken partly from RTEMS code and mostly from Motorola IDP user's

 * manual.  RTEMS copyright information below.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: mc68230.h,v 1.2 2001-09-27 11:59:35 chris Exp $

 */

#ifndef __MC68230_H__

#define __MC68230_H__

/* Some Motorola IDP User manual defines: */

#define PIT_ADDR        0x00c01003              /* base address of the PIT */

#define REGOFF  0x04                            /* Difference between addresses */

#define VECT    64

#define H1VECT  0x00

#define H2VECT  0x01

#define H3VECT  0x02

#define H4VECT  0x03

/*

 * mc68230 register offsets

 */

#define PGCR    0x00

#define PSRR    1*REGOFF

#define PADDR   2*REGOFF

#define PBDDR   3*REGOFF

#define PCDDR   4*REGOFF

#define PIVR    5*REGOFF

#define PACR    6*REGOFF

#define PBCR    7*REGOFF

#define PADR    8*REGOFF

#define PBDR    9*REGOFF

#define PAAR    10*REGOFF

#define PBAR    11*REGOFF

#define PCDR    12*REGOFF

#define PITSR   13*REGOFF

#define TCR             16*REGOFF

#define TIVR    17*REGOFF

#define CPRH    19*REGOFF

#define CPRM    20*REGOFF

#define CPRL    21*REGOFF

#define CNTRH   23*REGOFF

#define CNTRM   24*REGOFF

#define CNTRL   25*REGOFF

#define TSR             26*REGOFF

/* Some RTEMS style defines: */

#ifndef VOL8

#define VOL8( ptr )   ((volatile rtems_unsigned8 *)(ptr))

#endif

#define MC68230_WRITE( reg, data ) \

   *(VOL8(PIT_ADDR+reg)) = (data)

#define MC68230_READ( reg, data ) \

   (data) = *(VOL8(PIT_ADDR+reg))

#endif