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