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1 | /* |
| 2 | * DrZ80 Version 1.0 |
| 3 | * Z80 Emulator by Reesy |
| 4 | * Copyright 2005 Reesy |
| 5 | * |
| 6 | * This file is part of DrZ80. |
| 7 | * |
| 8 | * DrZ80 is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * DrZ80 is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with DrZ80; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #ifdef __cplusplus |
| 25 | extern "C" { |
| 26 | #endif |
| 27 | |
| 28 | #ifndef DRZ80_H |
| 29 | #define DRZ80_H |
| 30 | |
| 31 | extern int DrZ80Ver; /* Version number of library */ |
| 32 | |
| 33 | struct DrZ80 |
| 34 | { |
| 35 | unsigned int Z80PC; /*0x00 - PC Program Counter (Memory Base + PC) */ |
| 36 | unsigned int Z80A; /*0x04 - A Register: 0xAA------ */ |
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37 | unsigned int Z80F; /*0x08 - F Register: 0x------FF */ |
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38 | unsigned int Z80BC; /*0x0C - BC Registers: 0xBBCC---- */ |
| 39 | unsigned int Z80DE; /*0x10 - DE Registers: 0xDDEE---- */ |
| 40 | unsigned int Z80HL; /*0x14 - HL Registers: 0xHHLL---- */ |
| 41 | unsigned int Z80SP; /*0x18 - SP Stack Pointer (Memory Base + PC) */ |
| 42 | unsigned int Z80PC_BASE; /*0x1C - PC Program Counter (Memory Base) */ |
| 43 | unsigned int Z80SP_BASE; /*0x20 - SP Stack Pointer (Memory Base) */ |
| 44 | unsigned int Z80IX; /*0x24 - IX Index Register */ |
| 45 | unsigned int Z80IY; /*0x28 - IY Index Register */ |
| 46 | unsigned int Z80I; /*0x2C - I Interrupt Register */ |
| 47 | unsigned int Z80A2; /*0x30 - A' Register: 0xAA------ */ |
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48 | unsigned int Z80F2; /*0x34 - F' Register: 0x------FF */ |
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49 | unsigned int Z80BC2; /*0x38 - B'C' Registers: 0xBBCC---- */ |
| 50 | unsigned int Z80DE2; /*0x3C - D'E' Registers: 0xDDEE---- */ |
| 51 | unsigned int Z80HL2; /*0x40 - H'L' Registers: 0xHHLL---- */ |
| 52 | int cycles; /*0x44 - Cycles pending to be executed yet */ |
| 53 | int previouspc; /*0x48 - Previous PC */ |
| 54 | unsigned char Z80_IRQ; /*0x4C - Set IRQ Number (must be halfword aligned) */ |
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55 | unsigned char Z80IF; /*0x4D - Interrupt Flags: bit0=_IFF1, bit1=_IFF2, bit2=_HALT, b3=NMI */ |
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56 | unsigned char Z80IM; /*0x4E - Set IRQ Mode */ |
| 57 | unsigned char spare; /*0x4F - N/A */ |
| 58 | unsigned int z80irqvector; /*0x50 - Set IRQ Vector i.e. 0xFF=RST */ |
| 59 | void (*z80_irq_callback )(void); |
| 60 | void (*z80_write8 )(unsigned char d,unsigned short a); |
| 61 | void (*z80_write16 )(unsigned short d,unsigned short a); |
| 62 | unsigned char (*z80_in)(unsigned short p); |
| 63 | void (*z80_out )(unsigned short p,unsigned char d); |
| 64 | unsigned char (*z80_read8)(unsigned short a); |
| 65 | unsigned short (*z80_read16)(unsigned short a); |
| 66 | unsigned int (*z80_rebaseSP)(unsigned short new_sp); |
| 67 | unsigned int (*z80_rebasePC)(unsigned short new_pc); |
| 68 | unsigned int bla; |
| 69 | }; |
| 70 | |
| 71 | extern int DrZ80Run(struct DrZ80 *pcy,unsigned int cyc); |
| 72 | |
| 73 | #endif |
| 74 | |
| 75 | #ifdef __cplusplus |
| 76 | } /* End of extern "C" */ |
| 77 | #endif |
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