forked from Imagelibrary/rtems
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* mc68230.h -- Low level support code for the Motorola 68230 Parallel
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* Interface/Timer (PIT)
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*
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* Modified by Doug McBride, Colorado Space Grant College
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*
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* Format taken partly from RTEMS code and mostly from Motorola IDP user's
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* manual. RTEMS copyright information below.
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*
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* COPYRIGHT (c) 1989-1997.
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* On-Line Applications Research Corporation (OAR).
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* Copyright assigned to U.S. Government, 1994.
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*
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* The license and distribution terms for this file may in
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* the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* $Id$
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*/
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#ifndef __MC68230_H__
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#define __MC68230_H__
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/* Some Motorola IDP User manual defines: */
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#define PIT_ADDR 0x00c01003 /* base address of the PIT */
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#define REGOFF 0x04 /* Difference between addresses */
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#define VECT 64
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#define H1VECT 0x00
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#define H2VECT 0x01
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#define H3VECT 0x02
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#define H4VECT 0x03
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/*
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* mc68230 register offsets
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*/
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#define PGCR 0x00
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#define PSRR 1*REGOFF
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#define PADDR 2*REGOFF
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#define PBDDR 3*REGOFF
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#define PCDDR 4*REGOFF
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#define PIVR 5*REGOFF
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#define PACR 6*REGOFF
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#define PBCR 7*REGOFF
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#define PADR 8*REGOFF
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#define PBDR 9*REGOFF
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#define PAAR 10*REGOFF
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#define PBAR 11*REGOFF
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#define PCDR 12*REGOFF
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#define PITSR 13*REGOFF
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#define TCR 16*REGOFF
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#define TIVR 17*REGOFF
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#define CPRH 19*REGOFF
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#define CPRM 20*REGOFF
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#define CPRL 21*REGOFF
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#define CNTRH 23*REGOFF
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#define CNTRM 24*REGOFF
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#define CNTRL 25*REGOFF
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#define TSR 26*REGOFF
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/* Some RTEMS style defines: */
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#ifndef VOL8
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#define VOL8( ptr ) ((volatile rtems_unsigned8 *)(ptr))
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#endif
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#define MC68230_WRITE( reg, data ) \
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*(VOL8(PIT_ADDR+reg)) = (data)
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#define MC68230_READ( reg, data ) \
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(data) = *(VOL8(PIT_ADDR+reg))
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#endif
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