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/* |
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* REU.h - 17xx REU emulation |
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* |
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* Frodo (C) 1994-1997,2002-2005 Christian Bauer |
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* |
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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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* |
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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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* |
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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 02111-1307 USA |
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*/ |
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|
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#ifndef _REU_H |
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#define _REU_H |
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|
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|
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class MOS6510; |
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class Prefs; |
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|
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class REU { |
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public: |
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REU(MOS6510 *CPU); |
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~REU(); |
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|
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void NewPrefs(Prefs *prefs); |
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void Reset(void); |
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uint8 ReadRegister(uint16 adr); |
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void WriteRegister(uint16 adr, uint8 byte); |
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void FF00Trigger(void); |
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|
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private: |
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void open_close_reu(int old_size, int new_size); |
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void execute_dma(void); |
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|
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MOS6510 *the_cpu; // Pointer to 6510 |
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|
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uint8 *ex_ram; // REU expansion RAM |
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|
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uint32 ram_size; // Size of expansion RAM |
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uint32 ram_mask; // Expansion RAM address bit mask |
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|
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uint8 regs[16]; // REU registers |
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}; |
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|
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#endif |
