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dz80.h

/*
 * Z80 Disassembler
 * Copyright (C) 1990-2007 by Jeffery L. Post
 * j_post <AT> pacbell <DOT> net
 *
 * dz80.h - Z80 disassembler definitions
 *
 * Version 3.4.1 - 2007/09/02
 *
 *    This program 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 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#ifndef     _DZ80_H_
#define     _DZ80_H_

#define     CPU_LITTLE_ENDIAN // Z80 is little endian processor

#ifndef _DEFS_H_
#include    "defs.h"
#endif

//
//    Defined Constants
//

// opttbl bits:

#define     OPT_XFER          0x80  // unconditional transfer
#define     OPT_SPEC          0x40  // special codes (cd, dd, ed, fd)
#define     OPT_REL           0x20  // relative addressing
#define     OPT_DIR           0x10  // direct addressing (jp, call)
#define     OPT_PAR           0x08  // parenthesized address
#define     OPT_IMM           0x04  // immediate data
#define     OPT_3             0x02  // 3 byte instruction
#define     OPT_2             0x01  // 2 byte instruction
#define     OPT_NONE          0x00  // single byte, no options

#define     OPT_SIZE                      (OPT_2 | OPT_3)
#define     OPT_IMM2                      (OPT_IMM | OPT_2)
#define     OPT_PAR2                      (OPT_PAR | OPT_2)
#define     OPT_DIR_IMM3            (OPT_DIR | OPT_IMM | OPT_3)
#define     OPT_PAR_IMM3            (OPT_PAR | OPT_DIR_IMM3)
#define     OPT_REL2                      (OPT_REL | OPT_2)
#define     OPT_SPEC2               (OPT_SPEC | OPT_2)

// ED option bits:

#define     OPT_ED_2                0x01  // 2 byte, entry in edtbl
#define     OPT_ED_STORE      0x03  // write 16 bit register to memory
#define     OPT_ED_LD_BC      0x13  // load bc from memory
#define     OPT_ED_LD_DE      0x23  // load de from memory
#define     OPT_ED_LD_SP      0x33  // load sp from memory
#define     OPT_ED_RET        0x81  // retn or reti

// DD and FD option bits:

#define     OPT_DD_2                0x01  // 2 byte, entry in dd1tbl
#define     OPT_DD_LOAD       0x02  // 3 byte loads
#define     OPT_DD_DIR        0x03  // 4 byte direct addressing
#define     OPT_DD_ARTH       0x06  // 3 byte arithmetic codes
#define     OPT_DD_CB         0x07  // 4 byte dd/fd cb codes

struct snementry {
   char mcode[8];
};

struct entry {
      char mnem[16];
};

//
//    Prototypes
//

extern void usage(void);

//
//    Global Variables
//
extern int  d8080;      // 8080 mnemonic flag

#endif      // _DZ80_H_

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