/* * vic20mem.h -- VIC20 memory handling. * * Written by * Ettore Perazzoli * Daniel Kahlin * Marco van den Heuvel * * Memory configuration handling by * Alexander Lehmann * * 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. * */ #ifndef VICE_VIC20MEM_H #define VICE_VIC20MEM_H #include "mem.h" #include "types.h" #define VIC20_RAM_SIZE 0x10000 /* Kludged... */ /* VIC20 memory-related resources. */ #define VIC_BLK0 1 #define VIC_BLK1 2 #define VIC_BLK2 4 #define VIC_BLK3 8 #define VIC_BLK5 16 #define VIC_BLK_ALL (VIC_BLK0 | VIC_BLK1 | VIC_BLK2 | VIC_BLK3 | VIC_BLK5) /* new cart system */ #define VIC_CART_RAM123 (1 << 0) #define VIC_CART_BLK1 (1 << 1) #define VIC_CART_BLK2 (1 << 2) #define VIC_CART_BLK3 (1 << 3) #define VIC_CART_BLK5 (1 << 4) #define VIC_CART_IO2 (1 << 5) #define VIC_CART_IO3 (1 << 6) int vic20_mem_init_resources(void); int vic20_mem_init_cmdline_options(void); int vic20_mem_disable_ram_block(int num); int vic20_mem_enable_ram_block(int num); /* this should go away */ void mem_attach_cartridge(int type, uint8_t *rawcart); void mem_detach_cartridge(int type); /* Last data read/write by the cpu, this value lingers on the C(PU)-bus and gets used when the CPU reads from unconnected space on the C(PU)-bus */ extern uint8_t vic20_cpu_last_data; /* Last read data on V-bus (VD0-VD7) */ extern uint8_t vic20_v_bus_last_data; /* Last read data on V-bus (VD8-VD11) */ extern uint8_t vic20_v_bus_last_high; extern uint8_t vfli_ram[0x4000]; /* Update V-bus values after V-bus read ($0000-$1FFF, $8000-$9FFF) */ inline static void vic20_mem_v_bus_read(uint16_t addr) { vic20_v_bus_last_data = vic20_cpu_last_data; vic20_v_bus_last_high = mem_ram[0x9400 + (addr & 0x3ff)]; } /* Update V-bus values after V-bus write ($0000-$1FFF, $8000-$9FFF) */ /* TODO: same as vic20_mem_v_bus_read? */ inline static void vic20_mem_v_bus_store(uint16_t addr) { vic20_v_bus_last_data = vic20_cpu_last_data; } #endif