1 /* 2 * REU.h - 17xx REU emulation 3 * 4 * Frodo (C) 1994-1997,2002 Christian Bauer 5 */ 6 7 #ifndef _REU_H 8 #define _REU_H 9 10 11 class MOS6510; 12 class Prefs; 13 14 class REU { 15 public: 16 REU(MOS6510 *CPU); 17 ~REU(); 18 19 void NewPrefs(Prefs *prefs); 20 void Reset(void); 21 uint8 ReadRegister(uint16 adr); 22 void WriteRegister(uint16 adr, uint8 byte); 23 void FF00Trigger(void); 24 25 private: 26 void open_close_reu(int old_size, int new_size); 27 void execute_dma(void); 28 29 MOS6510 *the_cpu; // Pointer to 6510 30 31 uint8 *ex_ram; // REU expansion RAM 32 33 uint32 ram_size; // Size of expansion RAM 34 uint32 ram_mask; // Expansion RAM address bit mask 35 36 uint8 regs[16]; // REU registers 37 }; 38 39 #endif 40