initial import

[picodrive.git] / cpu / DrZ80 / drz80.h

diff --git a/cpu/DrZ80/drz80.h b/cpu/DrZ80/drz80.h
new file mode 100644 (file)
index 0000000..e415610
--- /dev/null
+++ b/cpu/DrZ80/drz80.h
@@ -0,0 +1,77 @@
+/*
+ * DrZ80 Version 1.0
+ * Z80 Emulator by Reesy
+ * Copyright 2005 Reesy
+ * 
+ * This file is part of DrZ80.
+ * 
+ *     DrZ80 is free software; you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation; either version 2 of the License, or
+ *     (at your option) any later version.
+ * 
+ *     DrZ80 is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License
+ *     along with DrZ80; if not, write to the Free Software
+ *     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef DRZ80_H
+#define DRZ80_H
+
+extern int DrZ80Ver; /* Version number of library */
+
+struct DrZ80
+{ 
+  unsigned int Z80PC;           /*0x00 - PC Program Counter (Memory Base + PC) */
+  unsigned int Z80A;            /*0x04 - A Register:   0xAA------ */
+  unsigned int Z80F;            /*0x08 - F Register:   0xFF------ */
+  unsigned int Z80BC;           /*0x0C - BC Registers: 0xBBCC---- */
+  unsigned int Z80DE;           /*0x10 - DE Registers: 0xDDEE---- */
+  unsigned int Z80HL;           /*0x14 - HL Registers: 0xHHLL---- */
+  unsigned int Z80SP;           /*0x18 - SP Stack Pointer (Memory Base + PC) */
+  unsigned int Z80PC_BASE;      /*0x1C - PC Program Counter (Memory Base) */
+  unsigned int Z80SP_BASE;      /*0x20 - SP Stack Pointer (Memory Base) */
+  unsigned int Z80IX;           /*0x24 - IX Index Register */
+  unsigned int Z80IY;           /*0x28 - IY Index Register */
+  unsigned int Z80I;            /*0x2C - I Interrupt Register */
+  unsigned int Z80A2;           /*0x30 - A' Register:    0xAA------ */
+  unsigned int Z80F2;           /*0x34 - F' Register:    0xFF------ */
+  unsigned int Z80BC2;          /*0x38 - B'C' Registers: 0xBBCC---- */
+  unsigned int Z80DE2;          /*0x3C - D'E' Registers: 0xDDEE---- */
+  unsigned int Z80HL2;          /*0x40 - H'L' Registers: 0xHHLL---- */    
+  int cycles;                      /*0x44 - Cycles pending to be executed yet */
+  int previouspc;                  /*0x48 - Previous PC */
+  unsigned char Z80_IRQ;        /*0x4C - Set IRQ Number (must be halfword aligned) */   
+  unsigned char Z80IF;          /*0x4D - Interrupt Flags:  bit1=_IFF1, bit2=_IFF2, bit3=_HALT */
+  unsigned char Z80IM;          /*0x4E - Set IRQ Mode */
+  unsigned char spare;          /*0x4F - N/A */
+  unsigned int z80irqvector;    /*0x50 - Set IRQ Vector i.e. 0xFF=RST */
+  void (*z80_irq_callback )(void);
+  void (*z80_write8 )(unsigned char d,unsigned short a); 
+  void (*z80_write16 )(unsigned short d,unsigned short a); 
+  unsigned char (*z80_in)(unsigned short p);
+  void (*z80_out )(unsigned short p,unsigned char d);
+  unsigned char (*z80_read8)(unsigned short a);
+  unsigned short (*z80_read16)(unsigned short a);
+  unsigned int (*z80_rebaseSP)(unsigned short new_sp);
+  unsigned int (*z80_rebasePC)(unsigned short new_pc);
+  unsigned int bla;
+};
+
+extern int DrZ80Run(struct DrZ80 *pcy,unsigned int cyc);
+
+#endif
+
+#ifdef __cplusplus
+} /* End of extern "C" */
+#endif