/* * REU.h - 17xx REU emulation * * Frodo (C) 1994-1997,2002-2004 Christian Bauer * * 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 _REU_H #define _REU_H class MOS6510; class Prefs; class REU { public: REU(MOS6510 *CPU); ~REU(); void NewPrefs(Prefs *prefs); void Reset(void); uint8 ReadRegister(uint16 adr); void WriteRegister(uint16 adr, uint8 byte); void FF00Trigger(void); private: void open_close_reu(int old_size, int new_size); void execute_dma(void); MOS6510 *the_cpu; // Pointer to 6510 uint8 *ex_ram; // REU expansion RAM uint32 ram_size; // Size of expansion RAM uint32 ram_mask; // Expansion RAM address bit mask uint8 regs[16]; // REU registers }; #endif