/* * westermann.c - Cartridge handling, Westermann 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 "monitor.h" #include "snapshot.h" #include "types.h" #include "util.h" #include "westermann.h" #include "crt.h" /* Westermann Utility Cartridge 16kb ROM - starts in 16k game config - any read access to io2 switches to 8k game config */ /* some prototypes are needed */ static uint8_t westermann_io2_read(uint16_t addr); static uint8_t westermann_io2_peek(uint16_t addr); static int westermann_dump(void); static io_source_t westermann_device = { CARTRIDGE_NAME_WESTERMANN, /* 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 */ 0xdf00, 0xdfff, 0xff, /* range for the device, address is ignored, reg:$df00, mirrors:$df01-$dfff */ 0, /* read is never valid */ NULL, /* NO store function */ NULL, /* NO poke function */ westermann_io2_read, /* read function */ westermann_io2_peek, /* peek function */ westermann_dump, /* device state information dump function */ CARTRIDGE_WESTERMANN, /* cartridge ID */ IO_PRIO_NORMAL, /* normal priority, device read needs to be checked for collisions */ 0, /* insertion order, gets filled in by the registration function */ IO_MIRROR_NONE /* NO mirroring */ }; static io_source_list_t *westermann_list_item = NULL; static const export_resource_t export_res_westermann = { CARTRIDGE_NAME_WESTERMANN, 1, 1, NULL, &westermann_device, CARTRIDGE_WESTERMANN }; /* ---------------------------------------------------------------------*/ static int westermann_a000 = 0; static uint8_t westermann_io2_read(uint16_t addr) { cart_config_changed_slotmain(0, 0, CMODE_READ); westermann_a000 = 0; return 0; } static uint8_t westermann_io2_peek(uint16_t addr) { return 0; } static int westermann_dump(void) { mon_out("$A000-$BFFF ROM: %s\n", (westermann_a000) ? "enabled" : "disabled"); return 0; } /* ---------------------------------------------------------------------*/ void westermann_config_init(void) { cart_config_changed_slotmain(CMODE_16KGAME, CMODE_16KGAME, CMODE_READ); westermann_a000 = 1; } void westermann_config_setup(uint8_t *rawcart) { memcpy(roml_banks, rawcart, 0x2000); memcpy(romh_banks, &rawcart[0x2000], 0x2000); cart_config_changed_slotmain(CMODE_16KGAME, CMODE_16KGAME, CMODE_READ); westermann_a000 = 1; } static int westermann_common_attach(void) { if (export_add(&export_res_westermann) < 0) { return -1; } westermann_list_item = io_source_register(&westermann_device); return 0; } int westermann_bin_attach(const char *filename, uint8_t *rawcart) { if (util_file_load(filename, rawcart, 0x4000, UTIL_FILE_LOAD_SKIP_ADDRESS) < 0) { return -1; } return westermann_common_attach(); } int westermann_crt_attach(FILE *fd, uint8_t *rawcart) { crt_chip_header_t chip; if (crt_read_chip_header(&chip, fd)) { return -1; } if (chip.start != 0x8000 || chip.size != 0x4000) { return -1; } if (crt_read_chip(rawcart, 0, &chip, fd)) { return -1; } return westermann_common_attach(); } void westermann_detach(void) { export_remove(&export_res_westermann); io_source_unregister(westermann_list_item); westermann_list_item = NULL; } /* ---------------------------------------------------------------------*/ /* CARTDELAEP256 snapshot module format: type | name | version | description ---------------------------------------- BYTE | ROM a000 | 0.1 | ROM at $A000 flag ARRAY | ROML | 0.0+ | 8192 BYTES of ROML data ARRAY | ROMH | 0.0+ | 8192 BYTES of ROMH data */ static const char snap_module_name[] = "CARTWEST"; #define SNAP_MAJOR 0 #define SNAP_MINOR 1 int westermann_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, (uint8_t)westermann_a000) < 0 || SMW_BA(m, roml_banks, 0x2000) < 0 || SMW_BA(m, romh_banks, 0x2000) < 0) { snapshot_module_close(m); return -1; } return snapshot_module_close(m); } int westermann_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 currrent */ if ((vmajor != SNAP_MAJOR) || (vminor != SNAP_MINOR)) { snapshot_set_error(SNAPSHOT_MODULE_HIGHER_VERSION); goto fail; } /* new in 0.1 */ if (!snapshot_version_is_smaller(vmajor, vminor, 0, 1)) { if (SMR_B_INT(m, &westermann_a000) < 0) { goto fail; } } else { westermann_a000 = 0; } if (0 || SMR_BA(m, roml_banks, 0x2000) < 0 || SMR_BA(m, romh_banks, 0x2000) < 0) { goto fail; } snapshot_module_close(m); return westermann_common_attach(); fail: snapshot_module_close(m); return -1; }