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/* dck.c: dock snapshot (Warajevo .DCK) handling routines
Copyright (c) 2003-2004 Darren Salt, Fredrick Meunier, Philip Kendall
$Id: dck.c 4724 2012-07-08 13:38:21Z 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:
Philip: philip-fuse@shadowmagic.org.uk
Darren: linux@youmustbejoking.demon.co.uk
Fred: fredm@spamcop.net
*/
#include <config.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <libspectrum.h>
#include "dck.h"
#include "machine.h"
#include "memory.h"
#include "settings.h"
#include "scld.h"
#include "ui/ui.h"
#include "utils.h"
#include "debugger/debugger.h"
/* Dock cart inserted? */
int dck_active = 0;
int
dck_insert( const char *filename )
{
if ( !( libspectrum_machine_capabilities( machine_current->machine ) &
LIBSPECTRUM_MACHINE_CAPABILITY_TIMEX_DOCK ) ) {
ui_error( UI_ERROR_ERROR, "This machine does not support the dock" );
return 1;
}
settings_set_string( &settings_current.dck_file, filename );
machine_reset( 0 );
return 0;
}
void
dck_eject( void )
{
if ( !( libspectrum_machine_capabilities( machine_current->machine ) &
LIBSPECTRUM_MACHINE_CAPABILITY_TIMEX_DOCK ) ) {
ui_error( UI_ERROR_ERROR, "This machine does not support the dock" );
return;
}
if( settings_current.dck_file ) free( settings_current.dck_file );
settings_current.dck_file = NULL;
dck_active = 0;
ui_menu_activate( UI_MENU_ITEM_MEDIA_CARTRIDGE_DOCK_EJECT, 0 );
machine_reset( 0 );
}
static memory_page *
dck_get_memory_page( libspectrum_dck_bank bank, size_t index )
{
switch( bank ) {
case LIBSPECTRUM_DCK_BANK_HOME:
return timex_home[ index ];
break;
case LIBSPECTRUM_DCK_BANK_DOCK:
return &timex_dock[ index ];
break;
case LIBSPECTRUM_DCK_BANK_EXROM:
return &timex_exrom[ index ];
break;
default:
return NULL;
}
}
int
dck_reset( void )
{
utils_file file;
size_t num_block = 0;
libspectrum_dck *dck;
int error;
dck_active = 0;
if( !settings_current.dck_file ) {
ui_menu_activate( UI_MENU_ITEM_MEDIA_CARTRIDGE_DOCK_EJECT, 0 );
return 0;
}
dck = libspectrum_dck_alloc();
error = utils_read_file( settings_current.dck_file, &file );
if( error ) { libspectrum_dck_free( dck, 0 ); return error; }
error = libspectrum_dck_read2( dck, file.buffer, file.length,
settings_current.dck_file );
if( error ) {
utils_close_file( &file ); libspectrum_dck_free( dck, 0 ); return error;
}
utils_close_file( &file );
while( dck->dck[num_block] != NULL ) {
memory_page *page;
int i;
libspectrum_dck_bank dck_bank = dck->dck[num_block]->bank;
if( dck_bank != LIBSPECTRUM_DCK_BANK_HOME &&
dck_bank != LIBSPECTRUM_DCK_BANK_DOCK &&
dck_bank != LIBSPECTRUM_DCK_BANK_EXROM ) {
ui_error( UI_ERROR_INFO, "Sorry, bank ID %i is unsupported",
dck->dck[num_block]->bank );
libspectrum_dck_free( dck, 0 );
return 1;
}
for( i = 0; i < 8; i++ ) {
libspectrum_byte *data;
int j;
switch( dck->dck[num_block]->access[i] ) {
case LIBSPECTRUM_DCK_PAGE_NULL:
break;
case LIBSPECTRUM_DCK_PAGE_ROM:
data = memory_pool_allocate( 0x2000 );
memcpy( data, dck->dck[num_block]->pages[i], 0x2000 );
for( j = 0; j < MEMORY_PAGES_IN_8K; j++ ) {
page = dck_get_memory_page( dck_bank, i * MEMORY_PAGES_IN_8K + j);
page->offset = j * MEMORY_PAGE_SIZE;
page->writable = 0;
page->save_to_snapshot = 1;
page->page = data + page->offset;
}
break;
case LIBSPECTRUM_DCK_PAGE_RAM_EMPTY:
case LIBSPECTRUM_DCK_PAGE_RAM:
/* Because the scr and snapshot code depends on the standard
memory map being in the RAM[] array, we just copy RAM
blocks from the HOME bank into the appropriate page; in
other cases, we allocate ourselves a new page to store the
contents in */
if( dck_bank == LIBSPECTRUM_DCK_BANK_HOME && i>1 ) {
for( j = 0; j < MEMORY_PAGES_IN_8K; j++ ) {
page = dck_get_memory_page( dck_bank, i * MEMORY_PAGES_IN_8K + j);
if( dck->dck[num_block]->access[i] == LIBSPECTRUM_DCK_PAGE_RAM ) {
memcpy( page->page,
dck->dck[num_block]->pages[i] + j * MEMORY_PAGE_SIZE,
MEMORY_PAGE_SIZE );
} else {
memset( page->page, 0, MEMORY_PAGE_SIZE );
}
}
} else {
data = memory_pool_allocate( 0x2000 );
if( dck->dck[num_block]->access[i] == LIBSPECTRUM_DCK_PAGE_RAM ) {
memcpy( data, dck->dck[num_block]->pages[i], 0x2000 );
} else {
memset( data, 0, 0x2000 );
}
for( j = 0; j < MEMORY_PAGES_IN_8K; j++ ) {
page = dck_get_memory_page( dck_bank, i * MEMORY_PAGES_IN_8K + j);
page->offset = j * MEMORY_PAGE_SIZE;
page->writable = 1;
page->save_to_snapshot = 1;
page->page = data + page->offset;
}
}
break;
}
}
num_block++;
}
dck_active = 1;
/* Make the menu item to eject the cartridge active */
ui_menu_activate( UI_MENU_ITEM_MEDIA_CARTRIDGE_DOCK_EJECT, 1 );
return libspectrum_dck_free( dck, 0 );
}
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