1 //==========================================================================
3 // devs/wallclock/i386/pc/include/devs_wallclock_i386_pc.inl
5 // PC RTC IO definitions
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
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30 // License. However the source code for this file must still be made available
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37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
46 // Purpose: PC RTC definitions for using DS12887
47 //####DESCRIPTIONEND####
48 //==========================================================================
50 #include CYGDAT_DEVS_WALLCLOCK_i386_PC_CFG
52 #define DS_ADDR CYGDAT_DEVS_WALLCLOCK_I386_PC_RTC_ADDRESS_PORT
53 #define DS_DATA CYGDAT_DEVS_WALLCLOCK_I386_PC_RTC_DATA_PORT
56 #define DS_READ(offset, data) \
58 register CYG_BYTE btval; \
59 DS_READ_UINT8( DS_ADDR, (btval)); \
60 DS_WRITE_UINT8(DS_ADDR, ((offset)&0x7F)|(btval&0x80)); \
61 DS_READ_UINT8( DS_DATA, (data)); \
63 #define DS_WRITE(offset, data) \
65 register CYG_BYTE btval; \
66 DS_READ_UINT8( DS_ADDR, (btval)); \
67 DS_WRITE_UINT8(DS_ADDR, ((offset)&0x7F)|(btval&0x80)); \
68 DS_WRITE_UINT8(DS_DATA, (data)); \
73 // EOF devs_wallclock_i386_pc.inl