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https://git.code.sf.net/p/fuse-emulator/fuse
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120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/* specplus2a.c: Spectrum +2A specific routines
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Copyright (c) 1999-2002 Philip Kendall
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$Id$
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Author contact information:
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E-mail: pak21-fuse@srcf.ucam.org
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Postal address: 15 Crescent Road, Wokingham, Berks, RG40 2DB, England
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*/
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#include <config.h>
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#include <stdio.h>
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#include <libspectrum.h>
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#include "ay.h"
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#include "display.h"
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#include "joystick.h"
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#include "machine.h"
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#include "printer.h"
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#include "settings.h"
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#include "spec128.h"
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#include "specplus2a.h"
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#include "specplus3.h"
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#include "spectrum.h"
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spectrum_port_info
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specplus2a_peripherals[] = {
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{ 0x0001, 0x0000, spectrum_ula_read, spectrum_ula_write },
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{ 0x00e0, 0x0000, joystick_kempston_read, spectrum_port_nowrite },
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{ 0xc002, 0xc000, ay_registerport_read, ay_registerport_write },
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{ 0xc002, 0x8000, spectrum_port_noread, ay_dataport_write },
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{ 0xc002, 0x4000, spectrum_port_noread, spec128_memoryport_write },
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{ 0xf002, 0x1000, spectrum_port_noread, specplus3_memoryport_write },
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{ 0xf002, 0x0000, printer_parallel_read, printer_parallel_write },
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{ 0, 0, NULL, NULL } /* End marker. DO NOT REMOVE */
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};
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int
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specplus2a_init( fuse_machine_info *machine )
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{
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int error;
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machine->machine = LIBSPECTRUM_MACHINE_PLUS2A;
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machine->id = "plus2a";
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machine->reset = specplus2a_reset;
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error = machine_set_timings( machine ); if( error ) return error;
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machine->timex = 0;
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machine->ram.read_memory = specplus3_readbyte;
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machine->ram.read_memory_internal = specplus3_readbyte_internal;
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machine->ram.read_screen = specplus3_read_screen_memory;
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machine->ram.write_memory = specplus3_writebyte;
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machine->ram.write_memory_internal = specplus3_writebyte_internal;
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machine->ram.contend_memory = specplus3_contend_memory;
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machine->ram.contend_port = specplus3_contend_port;
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error = machine_allocate_roms( machine, 4 );
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if( error ) return error;
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machine->rom_length[0] = machine->rom_length[1] =
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machine->rom_length[2] = machine->rom_length[3] = 0x4000;
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machine->peripherals = specplus2a_peripherals;
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machine->unattached_port = specplus3_unattached_port;
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machine->ay.present=1;
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machine->shutdown = NULL;
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return 0;
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}
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int specplus2a_reset(void)
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{
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int error;
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machine_current->ram.current_page = 0;
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machine_current->ram.current_rom = 0;
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machine_current->ram.current_screen = 5;
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machine_current->ram.locked = 0;
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machine_current->ram.special = 0;
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machine_current->ram.specialcfg = 0;
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error = machine_load_rom( &ROM[0], settings_current.rom_plus2a_0,
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machine_current->rom_length[0] );
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if( error ) return error;
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error = machine_load_rom( &ROM[1], settings_current.rom_plus2a_1,
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machine_current->rom_length[1] );
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if( error ) return error;
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error = machine_load_rom( &ROM[2], settings_current.rom_plus2a_2,
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machine_current->rom_length[2] );
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if( error ) return error;
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error = machine_load_rom( &ROM[3], settings_current.rom_plus2a_3,
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machine_current->rom_length[3] );
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if( error ) return error;
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return 0;
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}
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