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https://github.com/RaySollium99/picodrive.git
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77 lines
3.2 KiB
C
77 lines
3.2 KiB
C
/*
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* DrZ80 Version 1.0
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* Z80 Emulator by Reesy
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* Copyright 2005 Reesy
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*
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* This file is part of DrZ80.
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*
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* DrZ80 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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* DrZ80 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 DrZ80; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef DRZ80_H
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#define DRZ80_H
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extern int DrZ80Ver; /* Version number of library */
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struct DrZ80
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{
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unsigned int Z80PC; /*0x00 - PC Program Counter (Memory Base + PC) */
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unsigned int Z80A; /*0x04 - A Register: 0xAA------ */
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unsigned int Z80F; /*0x08 - F Register: 0xFF------ */
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unsigned int Z80BC; /*0x0C - BC Registers: 0xBBCC---- */
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unsigned int Z80DE; /*0x10 - DE Registers: 0xDDEE---- */
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unsigned int Z80HL; /*0x14 - HL Registers: 0xHHLL---- */
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unsigned int Z80SP; /*0x18 - SP Stack Pointer (Memory Base + PC) */
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unsigned int Z80PC_BASE; /*0x1C - PC Program Counter (Memory Base) */
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unsigned int Z80SP_BASE; /*0x20 - SP Stack Pointer (Memory Base) */
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unsigned int Z80IX; /*0x24 - IX Index Register */
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unsigned int Z80IY; /*0x28 - IY Index Register */
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unsigned int Z80I; /*0x2C - I Interrupt Register */
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unsigned int Z80A2; /*0x30 - A' Register: 0xAA------ */
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unsigned int Z80F2; /*0x34 - F' Register: 0xFF------ */
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unsigned int Z80BC2; /*0x38 - B'C' Registers: 0xBBCC---- */
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unsigned int Z80DE2; /*0x3C - D'E' Registers: 0xDDEE---- */
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unsigned int Z80HL2; /*0x40 - H'L' Registers: 0xHHLL---- */
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int cycles; /*0x44 - Cycles pending to be executed yet */
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int previouspc; /*0x48 - Previous PC */
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unsigned char Z80_IRQ; /*0x4C - Set IRQ Number (must be halfword aligned) */
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unsigned char Z80IF; /*0x4D - Interrupt Flags: bit1=_IFF1, bit2=_IFF2, bit3=_HALT */
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unsigned char Z80IM; /*0x4E - Set IRQ Mode */
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unsigned char spare; /*0x4F - N/A */
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unsigned int z80irqvector; /*0x50 - Set IRQ Vector i.e. 0xFF=RST */
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void (*z80_irq_callback )(void);
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void (*z80_write8 )(unsigned char d,unsigned short a);
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void (*z80_write16 )(unsigned short d,unsigned short a);
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unsigned char (*z80_in)(unsigned short p);
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void (*z80_out )(unsigned short p,unsigned char d);
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unsigned char (*z80_read8)(unsigned short a);
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unsigned short (*z80_read16)(unsigned short a);
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unsigned int (*z80_rebaseSP)(unsigned short new_sp);
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unsigned int (*z80_rebasePC)(unsigned short new_pc);
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unsigned int bla;
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};
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extern int DrZ80Run(struct DrZ80 *pcy,unsigned int cyc);
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#endif
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#ifdef __cplusplus
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} /* End of extern "C" */
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#endif
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