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/* tc2048.c: Timex TC2048 specific routines
Copyright (c) 1999-2011 Philip Kendall, Fredrick Meunier
$Id: tc2048.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:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#include <config.h>
#include <string.h>
#include <libspectrum.h>
#include "machine.h"
#include "machines.h"
#include "machines_periph.h"
#include "memory.h"
#include "periph.h"
#include "peripherals/disk/beta.h"
#include "peripherals/scld.h"
#include "settings.h"
#include "spec48.h"
#include "tc2068.h"
static int tc2048_reset( void );
int
tc2048_port_from_ula( libspectrum_word port )
{
/* Ports F4 (HSR), FE (SCLD) and FF (DEC) supplied by ULA */
port &= 0xff;
return( port == 0xf4 || port == 0xfe || port == 0xff );
}
int tc2048_init( fuse_machine_info *machine )
{
machine->machine = LIBSPECTRUM_MACHINE_TC2048;
machine->id = "2048";
machine->reset = tc2048_reset;
machine->timex = 1;
machine->ram.port_from_ula = tc2048_port_from_ula;
machine->ram.contend_delay = spectrum_contend_delay_65432100;
machine->ram.contend_delay_no_mreq = spectrum_contend_delay_65432100;
machine->ram.valid_pages = 3;
machine->unattached_port = spectrum_unattached_port_none;
machine->shutdown = NULL;
machine->memory_map = tc2068_memory_map;
return 0;
}
static int
tc2048_reset( void )
{
size_t i, j;
int error;
error = machine_load_rom( 0, settings_current.rom_tc2048,
settings_default.rom_tc2048, 0x4000 );
if( error ) return error;
/* 0x0000: ROM 0 */
scld_home_map_16k( 0x0000, memory_map_rom, 0 );
/* 0x4000: RAM 5, contended */
memory_ram_set_16k_contention( 5, 1 );
scld_home_map_16k( 0x4000, memory_map_ram, 5 );
/* 0x8000: RAM 2, not contended */
memory_ram_set_16k_contention( 2, 0 );
scld_home_map_16k( 0x8000, memory_map_ram, 2 );
/* 0xc000: RAM 0, not contended */
memory_ram_set_16k_contention( 0, 0 );
scld_home_map_16k( 0xc000, memory_map_ram, 0 );
periph_clear();
machines_periph_48();
/* ULA uses full decoding */
periph_set_present( PERIPH_TYPE_ULA, PERIPH_PRESENT_NEVER );
periph_set_present( PERIPH_TYPE_ULA_FULL_DECODE, PERIPH_PRESENT_ALWAYS );
/* As does the ZX Printer */
periph_set_present( PERIPH_TYPE_ZXPRINTER, PERIPH_PRESENT_NEVER );
periph_set_present( PERIPH_TYPE_ZXPRINTER_FULL_DECODE, PERIPH_PRESENT_OPTIONAL );
/* SCLD always present */
periph_set_present( PERIPH_TYPE_SCLD, PERIPH_PRESENT_ALWAYS );
/* TC2048 has a built-in Kempston joystick, which uses the "loose"
decoding */
periph_set_present( PERIPH_TYPE_KEMPSTON, PERIPH_PRESENT_NEVER );
periph_set_present( PERIPH_TYPE_KEMPSTON_LOOSE, PERIPH_PRESENT_ALWAYS );
/* SpeccyBoot doesn't seem to work on the TC2048 */
periph_set_present( PERIPH_TYPE_SPECCYBOOT, PERIPH_PRESENT_NEVER );
periph_update();
beta_builtin = 0;
for( i = 0; i < 8; i++ )
for( j = 0; j < MEMORY_PAGES_IN_8K; j++ ) {
memory_page *dock_page, *exrom_page;
dock_page = &timex_dock[i * MEMORY_PAGES_IN_8K + j];
*dock_page = tc2068_empty_mapping[j];
dock_page->page_num = i;
exrom_page = &timex_exrom[i * MEMORY_PAGES_IN_8K + j];
*exrom_page = tc2068_empty_mapping[j];
exrom_page->page_num = i;
}
return tc2068_tc2048_common_reset();
}
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