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/* periph.h: code for handling peripherals
Copyright (c) 2004-2009 Philip Kendall
$Id: periph.h 4060 2009-07-30 13:21:38Z fredm $
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#ifndef FUSE_PERIPH_H
#define FUSE_PERIPH_H
#include <libspectrum.h>
/*
* General peripheral list handling routines
*/
typedef libspectrum_byte (*periph_port_read_function)( libspectrum_word port,
int *attached );
typedef void (*periph_port_write_function)( libspectrum_word port,
libspectrum_byte data );
/* Information about a peripheral */
typedef struct periph_t {
/* This peripheral responds to all port values where
<port> & mask == value */
libspectrum_word mask;
libspectrum_word value;
periph_port_read_function read;
periph_port_write_function write;
} periph_t;
int periph_register( const periph_t *peripheral );
int periph_register_n( const periph_t *peripherals_list, size_t n );
int periph_set_active( int id, int active );
void periph_clear( void );
/* Register debugger page/unpage events for a peripheral */
int periph_register_paging_events( const char *type_string, int *page_event,
int *unpage_event );
/*
* The actual routines to read and write a port
*/
libspectrum_byte readport( libspectrum_word port );
libspectrum_byte readport_internal( libspectrum_word port );
void writeport( libspectrum_word port, libspectrum_byte b );
void writeport_internal( libspectrum_word port, libspectrum_byte b );
/*
* The more Fuse-specific peripheral handling routines
*/
/* For indicating the (optional) presence or absence of a peripheral */
typedef enum periph_present {
PERIPH_PRESENT_NEVER, /* Never present */
PERIPH_PRESENT_OPTIONAL, /* Optionally present */
PERIPH_PRESENT_ALWAYS, /* Always present */
} periph_present;
/* Is the Kempston interface active */
extern int periph_kempston_active;
/* Is the Interface I active */
extern int periph_interface1_active;
/* Is the Interface II active */
extern int periph_interface2_active;
/* Is the +D active */
extern int periph_plusd_active;
/* Is the Beta 128 active */
extern int periph_beta128_active;
/* Is the Opus active */
extern int periph_opus_active;
/* Is the Fuller Box active */
extern int periph_fuller_active;
/* Is the Melodik active */
extern int periph_melodik_active;
int periph_setup( const periph_t *peripherals_list, size_t n );
void periph_setup_kempston( periph_present present );
void periph_setup_interface1( periph_present present );
void periph_setup_interface2( periph_present present );
void periph_setup_plusd( periph_present present );
void periph_setup_beta128( periph_present present );
void periph_setup_opus( periph_present present );
void periph_setup_fuller( periph_present present );
void periph_setup_melodik( periph_present present );
void periph_update( void );
void periph_register_beta128( void );
#endif /* #ifndef FUSE_PERIPH_H */
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