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54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
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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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#ifndef _REU_H
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#define _REU_H
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class MOS6510;
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class Prefs;
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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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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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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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MOS6510 *the_cpu; // Pointer to 6510
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uint8 *ex_ram; // REU expansion RAM
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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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uint8 regs[16]; // REU registers
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};
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#endif
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