/* * bisplus.c - Cartridge handling, BIS-Plus cart. * * Written by * groepaz * * This file is part of VICE, the Versatile Commodore Emulator. * See README for copyright notice. * * 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., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA. * */ #include "vice.h" #include #include #include #define CARTRIDGE_INCLUDE_SLOTMAIN_API #include "c64cartsystem.h" #undef CARTRIDGE_INCLUDE_SLOTMAIN_API #include "c64mem.h" #include "cartio.h" #include "cartridge.h" #include "export.h" #include "bisplus.h" #include "monitor.h" #include "snapshot.h" #include "types.h" #include "util.h" #include "crt.h" /* "BIS-Plus" by Micro-Luc - 2/4/8K ROM Variants - IO1 writes disable the cartridge ROM */ static uint8_t bis_rom_enabled = 0; static uint8_t bis_rom_kb = 0; /* some prototypes are needed */ static void bisplus_io1_store(uint16_t addr, uint8_t value); static int bisplus_dump(void); static io_source_t bisplus_io1_device = { CARTRIDGE_NAME_BISPLUS, /* name of the device */ IO_DETACH_CART, /* use cartridge ID to detach the device when involved in a read-collision */ IO_DETACH_NO_RESOURCE, /* does not use a resource for detach */ 0xde00, 0xdeff, 0xff, /* range for the device, regs:$de00-$deff */ 0, /* read is never valid */ bisplus_io1_store, /* store function */ NULL, /* NO poke function */ NULL, /* NO read function */ NULL, /* NO peek function */ bisplus_dump, /* device state information dump function */ CARTRIDGE_BISPLUS, /* cartridge ID */ IO_PRIO_NORMAL, /* normal priority, device read needs to be checked for collisions */ 0, /* insertion order, gets filled in by the registration function */ IO_MIRROR_NONE /* NO mirroring */ }; static io_source_list_t *bisplus_io1_list_item = NULL; static const export_resource_t export_res_bis = { CARTRIDGE_NAME_BISPLUS, 0, 1, &bisplus_io1_device, NULL, CARTRIDGE_BISPLUS }; /* ---------------------------------------------------------------------*/ void bisplus_io1_store(uint16_t addr, uint8_t value) { /* printf("io1 write %04x %02x\n", addr, value); */ bis_rom_enabled = 0; cart_config_changed_slotmain(CMODE_RAM, CMODE_RAM, CMODE_READ); } /* FIXME: Add EXROM, GAME lines to the dump */ static int bisplus_dump(void) { mon_out("ROM Size: %dKiB\n", bis_rom_kb); mon_out("Status: %s\n", bis_rom_enabled ? "Enabled" : "Disabled"); return 0; } /* ---------------------------------------------------------------------*/ void bisplus_config_init(void) { bis_rom_enabled = 1; cart_config_changed_slotmain(CMODE_8KGAME, CMODE_8KGAME, CMODE_READ); } void bisplus_config_setup(uint8_t *rawcart) { memcpy(&roml_banks[0], &rawcart[0], 0x2000); if (bis_rom_kb == 4) { memcpy(&roml_banks[0x1000], &rawcart[0], 0x1000); } if (bis_rom_kb == 2) { memcpy(&roml_banks[0x0800], &rawcart[0], 0x0800); memcpy(&roml_banks[0x1000], &rawcart[0], 0x0800); memcpy(&roml_banks[0x1800], &rawcart[0], 0x0800); } bis_rom_enabled = 1; cart_config_changed_slotmain(CMODE_8KGAME, CMODE_8KGAME, CMODE_READ); } /* ---------------------------------------------------------------------*/ static int bisplus_common_attach(void) { if (export_add(&export_res_bis) < 0) { return -1; } bisplus_io1_list_item = io_source_register(&bisplus_io1_device); return 0; } int bisplus_bin_attach(const char *filename, uint8_t *rawcart) { bis_rom_kb = 8; if (util_file_load(filename, rawcart, 0x2000, UTIL_FILE_LOAD_SKIP_ADDRESS) < 0) { bis_rom_kb = 4; if (util_file_load(filename, rawcart, 0x1000, UTIL_FILE_LOAD_SKIP_ADDRESS) < 0) { bis_rom_kb = 2; if (util_file_load(filename, rawcart, 0x0800, UTIL_FILE_LOAD_SKIP_ADDRESS) < 0) { return -1; } } } return bisplus_common_attach(); } int bisplus_crt_attach(FILE *fd, uint8_t *rawcart) { crt_chip_header_t chip; if (crt_read_chip_header(&chip, fd)) { return -1; } if (chip.bank > 0) { return -1; } switch (chip.size) { case 0x2000: bis_rom_kb = 8; break; case 0x1000: bis_rom_kb = 4; break; case 0x0800: bis_rom_kb = 2; break; default: return -1; break; } if (crt_read_chip(rawcart, 0, &chip, fd)) { return -1; } return bisplus_common_attach(); } void bisplus_detach(void) { export_remove(&export_res_bis); io_source_unregister(bisplus_io1_list_item); bisplus_io1_list_item = NULL; } /* ---------------------------------------------------------------------*/ /* CARTBB3 snapshot module format: type | name | version | description ------------------------------------------- BYTE | bis_rom_enabled | 1.0 | 1 if ROM is enabled (informal) BYTE | bis_rom_kb | 1.0 | 2/4/8 kb ROM ARRAY | ROML | 1.0 | 8192 of ROML data */ static const char snap_module_name[] = "CARTBB3"; #define SNAP_MAJOR 1 #define SNAP_MINOR 0 int bisplus_snapshot_write_module(snapshot_t *s) { snapshot_module_t *m; m = snapshot_module_create(s, snap_module_name, SNAP_MAJOR, SNAP_MINOR); if (m == NULL) { return -1; } if (0 || SMW_B(m, bis_rom_enabled) < 0 || SMW_B(m, bis_rom_kb) < 0 || SMW_BA(m, roml_banks, 0x2000) < 0) { snapshot_module_close(m); return -1; } return snapshot_module_close(m); } int bisplus_snapshot_read_module(snapshot_t *s) { uint8_t vmajor, vminor; snapshot_module_t *m; m = snapshot_module_open(s, snap_module_name, &vmajor, &vminor); if (m == NULL) { return -1; } /* Do not accept versions higher than current */ if (snapshot_version_is_bigger(vmajor, vminor, SNAP_MAJOR, SNAP_MINOR)) { snapshot_set_error(SNAPSHOT_MODULE_HIGHER_VERSION); goto fail; } if (0 || SMR_B(m, &bis_rom_enabled) < 0 || SMR_B(m, &bis_rom_kb) < 0 || SMR_BA(m, roml_banks, 0x2000) < 0) { goto fail; } snapshot_module_close(m); return bisplus_common_attach(); fail: snapshot_module_close(m); return -1; }