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/* simpleide.c: Simple 8-bit IDE interface routines
Copyright (c) 2003-2004 Garry Lancaster,
2004 Philip Kendall,
2008 Fredrick Meunier
$Id: simpleide.c 4225 2010-12-17 20:14:40Z pak21 $
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 Kendall <philip-fuse@shadowmagic.org.uk>
*/
#include <config.h>
#include <libspectrum.h>
#include "ide.h"
#include "module.h"
#include "periph.h"
#include "settings.h"
#include "simpleide.h"
#include "ui/ui.h"
/* Private function prototypes */
static libspectrum_byte simpleide_read( libspectrum_word port, int *attached );
static void simpleide_write( libspectrum_word port, libspectrum_byte data );
/* Data */
const periph_t simpleide_peripherals[] = {
{ 0x0010, 0x0000, simpleide_read, simpleide_write },
};
const size_t simpleide_peripherals_count =
sizeof( simpleide_peripherals ) / sizeof( periph_t );
static libspectrum_ide_channel *simpleide_idechn;
static void simpleide_from_snapshot( libspectrum_snap *snap );
static void simpleide_to_snapshot( libspectrum_snap *snap );
static module_info_t simpleide_module_info = {
simpleide_reset,
NULL,
NULL,
simpleide_from_snapshot,
simpleide_to_snapshot,
};
/* Housekeeping functions */
int
simpleide_init( void )
{
int error;
simpleide_idechn = libspectrum_ide_alloc( LIBSPECTRUM_IDE_DATA8 );
ui_menu_activate( UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_MASTER_EJECT, 0 );
ui_menu_activate( UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_SLAVE_EJECT, 0 );
if( settings_current.simpleide_master_file ) {
error = libspectrum_ide_insert( simpleide_idechn, LIBSPECTRUM_IDE_MASTER,
settings_current.simpleide_master_file );
if( error ) return error;
ui_menu_activate( UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_MASTER_EJECT, 1 );
}
if( settings_current.simpleide_slave_file ) {
error = libspectrum_ide_insert( simpleide_idechn, LIBSPECTRUM_IDE_SLAVE,
settings_current.simpleide_slave_file );
if( error ) return error;
ui_menu_activate( UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_SLAVE_EJECT, 1 );
}
module_register( &simpleide_module_info );
return 0;
}
int
simpleide_end( void )
{
return libspectrum_ide_free( simpleide_idechn );
}
void
simpleide_reset( int hard_reset GCC_UNUSED )
{
libspectrum_ide_reset( simpleide_idechn );
}
int
simpleide_insert( const char *filename, libspectrum_ide_unit unit )
{
char **setting;
ui_menu_item item;
switch( unit ) {
case LIBSPECTRUM_IDE_MASTER:
setting = &settings_current.simpleide_master_file;
item = UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_MASTER_EJECT;
break;
case LIBSPECTRUM_IDE_SLAVE:
setting = &settings_current.simpleide_slave_file;
item = UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_SLAVE_EJECT;
break;
default: return 1;
}
return ide_insert( filename, simpleide_idechn, unit, simpleide_commit,
setting, item );
}
int
simpleide_commit( libspectrum_ide_unit unit )
{
int error;
error = libspectrum_ide_commit( simpleide_idechn, unit );
return error;
}
int
simpleide_eject( libspectrum_ide_unit unit )
{
char **setting;
ui_menu_item item;
switch( unit ) {
case LIBSPECTRUM_IDE_MASTER:
setting = &settings_current.simpleide_master_file;
item = UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_MASTER_EJECT;
break;
case LIBSPECTRUM_IDE_SLAVE:
setting = &settings_current.simpleide_slave_file;
item = UI_MENU_ITEM_MEDIA_IDE_SIMPLE8BIT_SLAVE_EJECT;
break;
default: return 1;
}
return ide_eject( simpleide_idechn, unit, simpleide_commit, setting, item );
}
/* Port read/writes */
static libspectrum_byte
simpleide_read( libspectrum_word port, int *attached )
{
libspectrum_ide_register idereg;
if( !settings_current.simpleide_active ) return 0xff;
*attached = 1;
idereg = ( ( port >> 8 ) & 0x01 ) | ( ( port >> 11 ) & 0x06 );
return libspectrum_ide_read( simpleide_idechn, idereg );
}
static void
simpleide_write( libspectrum_word port, libspectrum_byte data )
{
libspectrum_ide_register idereg;
if( !settings_current.simpleide_active ) return;
idereg = ( ( port >> 8 ) & 0x01 ) | ( ( port >> 11 ) & 0x06 );
libspectrum_ide_write( simpleide_idechn, idereg, data );
}
static void
simpleide_from_snapshot( libspectrum_snap *snap )
{
settings_current.simpleide_active =
libspectrum_snap_simpleide_active( snap );
}
static void
simpleide_to_snapshot( libspectrum_snap *snap )
{
if( !settings_current.simpleide_active ) return;
libspectrum_snap_set_simpleide_active( snap, 1 );
}
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