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/*
* Copyright (C) 1996-1998 Szeredi Miklos
* Email: mszeredi@inf.bme.hu
*
* 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 2 of the License, or
* (at your option) any later version. See the file COPYING.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef Z80_H
#define Z80_H
#include "zxconfig.h"
#include "config.h"
#ifdef ROCKBOX_BIG_ENDIAN
#define WORDS_BIGENDIAN
#endif
#ifndef COMPARISON
#define PRNM(x) z80_ ## x
#else
#define PRNM(x) z80x_ ## x
#endif
#define DANM(x) PRNM(proc).x
#include "z80_type.h"
#ifndef WORDS_BIGENDIAN
union dregp {
struct { byte l, h, _b2, _b3; } s;
struct { dbyte d, _d1; } d;
byte* p;
};
#else
union dregp {
struct { byte _b3, _b2, h, l; } s;
struct { dbyte _d1, d; } d;
byte* p;
};
#endif
#define NUMDREGS 9
#define BACKDREGS 4
#define PORTNUM 256
/* Do NOT change the order! */
typedef struct {
union dregp nr[NUMDREGS];
union dregp br[BACKDREGS];
int haltstate;
int it_mode;
int iff1, iff2;
byte *mem;
int tc;
int rl7;
#ifdef SPECT_MEM /* WARNING: Do NOT change the order!!! */
int next_scri;
int inport_mask;
int ula_inport;
int ula_outport;
int sound_sam;
int sound_change;
int imp_change;
#endif
#ifdef Z80C
dbyte cbaddr;
#ifdef PROCP
byte *incf_tbl;
byte *decf_tbl;
byte *addf_tbl;
byte *subf_tbl;
byte *orf_tbl;
byte *inports;
byte *outports;
#ifdef SPECT_MEM
byte *fe_inport_high;
#endif
#endif
#endif
} Z80;
extern Z80 PRNM(proc);
extern byte PRNM(inports)[];
extern byte PRNM(outports)[];
#define ZI_BC 0
#define ZI_DE 1
#define ZI_HL 2
#define ZI_AF 3
#define ZI_IR 4
#define ZI_IX 5
#define ZI_IY 6
#define ZI_PC 7
#define ZI_SP 8
#define BC (DANM(nr)[ZI_BC].d.d)
#define DE (DANM(nr)[ZI_DE].d.d)
#define HL (DANM(nr)[ZI_HL].d.d)
#define AF (DANM(nr)[ZI_AF].d.d)
#define IR (DANM(nr)[ZI_IR].d.d)
#define IX (DANM(nr)[ZI_IX].d.d)
#define IY (DANM(nr)[ZI_IY].d.d)
#define PC (DANM(nr)[ZI_PC].d.d)
#define SP (DANM(nr)[ZI_SP].d.d)
#define BCP (DANM(nr)[ZI_BC].p)
#define DEP (DANM(nr)[ZI_DE].p)
#define HLP (DANM(nr)[ZI_HL].p)
#define PCP (DANM(nr)[ZI_PC].p)
#define SPP (DANM(nr)[ZI_SP].p)
#define IXP (DANM(nr)[ZI_IX].p)
#define IYP (DANM(nr)[ZI_IY].p)
#define RB (DANM(nr)[ZI_BC].s.h)
#define RC (DANM(nr)[ZI_BC].s.l)
#define RD (DANM(nr)[ZI_DE].s.h)
#define RE (DANM(nr)[ZI_DE].s.l)
#define RH (DANM(nr)[ZI_HL].s.h)
#define RL (DANM(nr)[ZI_HL].s.l)
#define RA (DANM(nr)[ZI_AF].s.h)
#define RF (DANM(nr)[ZI_AF].s.l)
#define RI (DANM(nr)[ZI_IR].s.h)
#define RR (DANM(nr)[ZI_IR].s.l)
#define XH (DANM(nr)[ZI_IX].s.h)
#define XL (DANM(nr)[ZI_IX].s.l)
#define YH (DANM(nr)[ZI_IY].s.h)
#define YL (DANM(nr)[ZI_IY].s.l)
#define PCH (DANM(nr)[ZI_PC].s.h)
#define PCL (DANM(nr)[ZI_PC].s.l)
#define SPH (DANM(nr)[ZI_SP].s.h)
#define SPL (DANM(nr)[ZI_SP].s.l)
#define BCBK (DANM(br)[ZI_BC].d.d)
#define DEBK (DANM(br)[ZI_DE].d.d)
#define HLBK (DANM(br)[ZI_HL].d.d)
#define AFBK (DANM(br)[ZI_AF].d.d)
#define BBK (DANM(br)[ZI_BC].s.h)
#define CBK (DANM(br)[ZI_BC].s.l)
#define DBK (DANM(br)[ZI_DE].s.h)
#define EBK (DANM(br)[ZI_DE].s.l)
#define HBK (DANM(br)[ZI_HL].s.h)
#define LBK (DANM(br)[ZI_HL].s.l)
#define ABK (DANM(br)[ZI_AF].s.h)
#define FBK (DANM(br)[ZI_AF].s.l)
#ifdef __cplusplus
extern "C" {
#endif
extern void PRNM(init)(void);
extern int PRNM(step)(int ticknum);
extern void PRNM(interrupt)(int data);
extern void PRNM(nmi)(void);
extern void PRNM(reset)(void);
extern void PRNM(pushpc)(void);
extern void PRNM(local_init)(void);
#ifdef __cplusplus
}
#endif
#endif /* Z80_H */
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