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Diffstat (limited to 'tools/ioemu/iodev/pit.h')
| -rw-r--r-- | tools/ioemu/iodev/pit.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/tools/ioemu/iodev/pit.h b/tools/ioemu/iodev/pit.h new file mode 100644 index 0000000000..49b663bf9d --- /dev/null +++ b/tools/ioemu/iodev/pit.h @@ -0,0 +1,103 @@ +///////////////////////////////////////////////////////////////////////// +// $Id: pit.h,v 1.10 2002/10/25 11:44:40 bdenney Exp $ +///////////////////////////////////////////////////////////////////////// +// +// Copyright (C) 2001 MandrakeSoft S.A. +// +// MandrakeSoft S.A. +// 43, rue d'Aboukir +// 75002 Paris - France +// http://www.linux-mandrake.com/ +// http://www.mandrakesoft.com/ +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +#ifndef _BX_PIT_H +#define _BX_PIT_H + +#include "config.h" + +#if (BX_USE_NEW_PIT==0) + +#if BX_USE_PIT_SMF +# define BX_PIT_SMF static +# define BX_PIT_THIS bx_pit. +#else +# define BX_PIT_SMF +# define BX_PIT_THIS this-> +#endif + +#ifdef OUT +# undef OUT +#endif + + +typedef struct { + Bit8u mode; + Bit8u latch_mode; + Bit16u input_latch_value; + bx_bool input_latch_toggle; + Bit16u output_latch_value; + bx_bool output_latch_toggle; + bx_bool output_latch_full; + Bit16u counter_max; + Bit16u counter; + bx_bool bcd_mode; + bx_bool active; + bx_bool GATE; // GATE input pin + bx_bool OUT; // OUT output pin + } bx_pit_t; + + + + +class bx_pit_c : public logfunctions { +public: + bx_pit_c( void ); + ~bx_pit_c( void ); + BX_PIT_SMF int init(void); + BX_PIT_SMF void reset( unsigned type); + BX_PIT_SMF bx_bool periodic( Bit32u usec_delta ); + + BX_PIT_SMF int SaveState( class state_file *fd ); + BX_PIT_SMF int LoadState( class state_file *fd ); + +private: + + static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len); + static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len); +#if !BX_USE_PIT_SMF + Bit32u read( Bit32u addr, unsigned int len ); + void write( Bit32u addr, Bit32u Value, unsigned int len ); +#endif + + struct s_type { + bx_pit_t timer[3]; + Bit8u speaker_data_on; + bx_bool refresh_clock_div2; + int timer_handle[3]; + } s; + + BX_PIT_SMF void write_count_reg( Bit8u value, unsigned timerid ); + BX_PIT_SMF Bit8u read_counter( unsigned timerid ); + BX_PIT_SMF void latch( unsigned timerid ); + BX_PIT_SMF void set_GATE(unsigned pit_id, unsigned value); + BX_PIT_SMF void start(unsigned timerid); + }; + +extern bx_pit_c bx_pit; + +#endif // #if (BX_USE_NEW_PIT==0) +#endif // #ifndef _BX_PIT_H |