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* ramcart.c - RAMCART emulation.
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* Marco van den Heuvel <blackystardust68@yahoo.com>
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* This file is part of VICE, the Versatile Commodore Emulator.
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* See README for copyright notice.
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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
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#include "c64export.h"
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#include "cartridge.h"
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#include "interrupt.h"
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#include "resources.h"
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#ifdef HAS_TRANSLATION
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#include "translate.h"
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static const c64export_resource_t export_res = {
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/* RAMCART registers */
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static BYTE ramcart[2];
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static BYTE *ramcart_ram = NULL;
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static unsigned int old_ramcart_ram_size = 0;
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static log_t ramcart_log = LOG_ERR;
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static int ramcart_activate(void);
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static int ramcart_deactivate(void);
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/* ------------------------------------------------------------------------- */
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/* Flag: Do we enable the external RAMCART? */
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/* Flag: Is the RAMCART readonly ? */
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int ramcart_readonly=0;
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/* Size of the RAMCART. */
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static DWORD ramcart_size = 0;
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/* Size of the RAMCART in KB. */
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static DWORD ramcart_size_kb = 0;
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/* Filename of the RAMCART image. */
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static char *ramcart_filename = NULL;
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void ramcart_init_config(void)
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mem_pla_config_changed();
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static int set_ramcart_enabled(resource_value_t v, void *param)
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if (ramcart_enabled) {
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if (ramcart_deactivate() < 0) {
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c64export_remove(&export_res);
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mem_pla_config_changed();
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if (c64export_query(&export_res) >= 0) {
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if (!ramcart_enabled) {
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if (ramcart_activate() < 0) {
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if (c64export_add(&export_res) < 0)
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mem_pla_config_changed();
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static int set_ramcart_readonly(resource_value_t v, void *param)
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ramcart_readonly=(int)v;
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static int set_ramcart_size(resource_value_t v, void *param)
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if ((DWORD)v == ramcart_size_kb)
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log_message(ramcart_log, "Unknown RAMCART size %ld.", (long)v);
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if (ramcart_enabled) {
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ramcart_deactivate();
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ramcart_size_kb = (DWORD)v;
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ramcart_size = ramcart_size_kb << 10;
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ramcart_size_kb = (DWORD)v;
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ramcart_size = ramcart_size_kb << 10;
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static int set_ramcart_filename(resource_value_t v, void *param)
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const char *name = (const char *)v;
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if (ramcart_filename != NULL && name != NULL
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&& strcmp(name, ramcart_filename) == 0)
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if (ramcart_enabled) {
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ramcart_deactivate();
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util_string_set(&ramcart_filename, name);
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util_string_set(&ramcart_filename, name);
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static const resource_t resources[] = {
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{ "RAMCART", RES_INTEGER, (resource_value_t)0,
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(void *)&ramcart_enabled, set_ramcart_enabled, NULL },
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{ "RAMCART_RO", RES_INTEGER, (resource_value_t)0,
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(void *)&ramcart_readonly, set_ramcart_readonly, NULL },
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{ "RAMCARTsize", RES_INTEGER, (resource_value_t)128,
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(void *)&ramcart_size_kb, set_ramcart_size, NULL },
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{ "RAMCARTfilename", RES_STRING, (resource_value_t)"",
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(void *)&ramcart_filename, set_ramcart_filename, NULL },
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int ramcart_resources_init(void)
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return resources_register(resources);
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void ramcart_resources_shutdown(void)
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lib_free(ramcart_filename);
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/* ------------------------------------------------------------------------- */
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#ifdef HAS_TRANSLATION
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static const cmdline_option_t cmdline_options[] =
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{ "-ramcart", SET_RESOURCE, 0, NULL, NULL, "RAMCART", (resource_value_t)1,
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0, IDCLS_ENABLE_RAMCART },
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{ "+ramcart", SET_RESOURCE, 0, NULL, NULL, "RAMCART", (resource_value_t)0,
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0, IDCLS_DISABLE_RAMCART },
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{ "-ramcartimage", SET_RESOURCE, 1, NULL, NULL, "RAMCARTfilename", NULL,
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IDCLS_P_NAME, IDCLS_SPECIFY_RAMCART_NAME },
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{ "-ramcartsize", SET_RESOURCE, 1, NULL, NULL, "RAMCARTsize", NULL,
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IDCLS_P_SIZE_IN_KB, IDCLS_RAMCART_SIZE },
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static const cmdline_option_t cmdline_options[] =
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{ "-ramcart", SET_RESOURCE, 0, NULL, NULL, "RAMCART", (resource_value_t)1,
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NULL, N_("Enable the RAMCART expansion") },
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{ "+ramcart", SET_RESOURCE, 0, NULL, NULL, "RAMCART", (resource_value_t)0,
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NULL, N_("Disable the RAMCART expansion") },
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{ "-ramcartimage", SET_RESOURCE, 1, NULL, NULL, "RAMCARTfilename", NULL,
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N_("<name>"), N_("Specify name of RAMCART image") },
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{ "-ramcartsize", SET_RESOURCE, 1, NULL, NULL, "RAMCARTsize", NULL,
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N_("<size in KB>"), N_("Size of the RAMCART expansion") },
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int ramcart_cmdline_options_init(void)
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return cmdline_register_options(cmdline_options);
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/* ------------------------------------------------------------------------- */
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void ramcart_init(void)
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ramcart_log = log_open("RAMCART");
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void ramcart_reset(void)
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static int ramcart_activate(void)
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ramcart_ram = (BYTE *)lib_realloc((void *)ramcart_ram, (size_t)ramcart_size);
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/* Clear newly allocated RAM. */
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if (ramcart_size > old_ramcart_ram_size)
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memset(ramcart_ram, 0, (size_t)(ramcart_size - old_ramcart_ram_size));
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old_ramcart_ram_size = ramcart_size;
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log_message(ramcart_log, "%dKB unit installed.", (int)(ramcart_size >> 10));
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if (!util_check_null_string(ramcart_filename)) {
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if (util_file_load(ramcart_filename, ramcart_ram, (size_t)ramcart_size,
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UTIL_FILE_LOAD_RAW) < 0) {
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log_message(ramcart_log,
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"Reading RAMCART image %s failed.", ramcart_filename);
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if (util_file_save(ramcart_filename, ramcart_ram, ramcart_size) < 0) {
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log_message(ramcart_log,
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"Creating RAMCART image %s failed.", ramcart_filename);
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log_message(ramcart_log, "Creating RAMCART image %s.", ramcart_filename);
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log_message(ramcart_log, "Reading RAMCART image %s.", ramcart_filename);
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static int ramcart_deactivate(void)
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if (ramcart_ram == NULL)
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if (!util_check_null_string(ramcart_filename)) {
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if (util_file_save(ramcart_filename, ramcart_ram, ramcart_size) < 0) {
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log_message(ramcart_log,
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"Writing RAMCART image %s failed.", ramcart_filename);
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log_message(ramcart_log, "Writing RAMCART image %s.", ramcart_filename);
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lib_free(ramcart_ram);
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old_ramcart_ram_size = 0;
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void ramcart_shutdown(void)
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ramcart_deactivate();
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/* ------------------------------------------------------------------------- */
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BYTE REGPARM1 ramcart_reg_read(WORD addr)
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retval=ramcart[addr];
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void REGPARM2 ramcart_reg_store(WORD addr, BYTE byte)
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if (addr==1 && ramcart_size_kb==128)
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BYTE REGPARM1 ramcart_roml_read(WORD addr)
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if (ramcart_readonly==1 && ramcart_size_kb==128 && addr>=0x8000 && addr<=0x80ff)
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retval=ramcart_ram[((ramcart[1]&1)*65536)+(ramcart[0]*256)+(addr&0xff)];
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retval=plus60k_ram_read(addr);
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void REGPARM2 ramcart_roml_store(WORD addr, BYTE byte)
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plus60k_ram_store(addr, byte);
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BYTE REGPARM1 ramcart_window_read(WORD addr)
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retval=ramcart_ram[((ramcart[1]&1)*65536)+(ramcart[0]*256)+(addr&0xff)];
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void REGPARM2 ramcart_window_store(WORD addr, BYTE byte)
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ramcart_ram[((ramcart[1]&1)*65536)+(ramcart[0]*256)+(addr&0xff)]=byte;
added
removed
src/c64/ramcart.c
