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#ifndef _Z80_DEFS_H_INCLUDED
#define _Z80_DEFS_H_INCLUDED
#include <stddef.h>
#include <stdint.h>
#include "../sysdefs.h"
struct Z80;
#define Z80FAST fastcall
#ifdef _MSC_VER
#define Z80INLINE forceinline // time-critical inlines
#else
#define Z80INLINE inline
#endif
typedef void (Z80FAST *STEPFUNC)(Z80*);
#define Z80OPCODE void Z80FAST
typedef unsigned char (Z80FAST *LOGICFUNC)(Z80*, unsigned char byte);
#define Z80LOGIC unsigned char Z80FAST
//=============================================================================
struct TZ80State
{
unsigned t; // Òåêóùèé òàêò ïðîöåññîðà âíóòðè spectrum êàäðà [0..conf.frame)
/*------------------------------*/
union
{
unsigned pc;
struct
{
unsigned char pcl;
unsigned char pch;
};
};
union
{
unsigned sp;
struct
{
unsigned char spl;
unsigned char sph;
};
};
union
{
unsigned ir_;
struct
{
unsigned char r_low;
unsigned char i;
};
};
union
{
unsigned int_flags;
struct
{
unsigned char r_hi;
unsigned char iff1; // int = 1 -> EI
// int = 0 -> DI
unsigned char iff2; // ñîñòîÿíèå int íà ìîìåíò NMI
unsigned char halted;
};
};
/*------------------------------*/
union
{
unsigned bc; //ýòî øî çà ìóòü ??????!!!!!
unsigned short bc16; //îíî ññûëàåòñî íà îäíî è òîæå? [NS]
struct
{
unsigned char c;
unsigned char b;
u8 trash;
};
};
union
{
unsigned de;
struct
{
unsigned char e;
unsigned char d;
};
};
union
{
unsigned hl;
struct
{
unsigned char l;
unsigned char h;
};
};
union
{
unsigned af;
struct
{
unsigned char f;
unsigned char a;
};
};
/*------------------------------*/
union
{
unsigned ix;
struct
{
unsigned char xl;
unsigned char xh;
};
};
union
{
unsigned iy;
struct
{
unsigned char yl;
unsigned char yh;
};
};
/*------------------------------*/
struct //ALT
{
union
{
unsigned bc; //alt.bc
struct
{
unsigned char c; //alt.c
unsigned char b; //alt.b
};
};
union
{
unsigned de; //alt.de
struct
{
unsigned char e; //alt.e
unsigned char d; //alt.d
};
};
union
{
unsigned hl; //alt.hl
struct
{
unsigned char l; //alt.l
unsigned char h; //alt.h
};
};
union
{
unsigned af; //alt.af
struct
{
unsigned char f; //alt.f
unsigned char a; //alt.a
};
};
} alt;
union
{
unsigned memptr; // undocumented register
struct
{
unsigned char meml;
unsigned char memh;
};
};
unsigned eipos, haltpos;
/*------------------------------*/
unsigned char im;
unsigned char nmi_in_progress; //NEDOREPO
// bool nmi_in_progress; //0.39.0
};
//=============================================================================
//=============================================================================
typedef u8 (__fastcall * TXm)(u32 addr);
typedef u8 (__fastcall * TRm)(u32 addr);
typedef void (__fastcall * TWm)(u32 addr, u8 val);
//=============================================================================
//=============================================================================
struct TMemIf
{
TXm xm;
TRm rm;
TWm wm;
};
//=============================================================================
//=============================================================================
struct Z80 : public TZ80State
{
unsigned char tmp0, tmp1, tmp3;
unsigned short last_branch;
//-------------------------------------------------------------------------
// Trace Window
unsigned trace_curs; // àäðåñ êóðñîðà
unsigned trace_top; // àäðåñ ñàìîé âåðõíåé ñòðîêè
int graph_trace_cursor_pos; // ÷èñòî ãðàôè÷åñêîå ïîëîæåíèå êóðñîðà [NS]
unsigned trace_mode; // 0 - addr
// 1 - dump/labels
// 2 - disasm
//-------------------------------------------------------------------------
// Memory Viewer
unsigned mem_curs; // àäðåñ êóðñîðà
unsigned mem_top; // àäðåñ íà÷àëà ñàìîé âåðõíåé âèäèìîé ñòðîêè
unsigned mem_second; // ðåæèì ðåäàêòèðîâàíèÿ âòîðîãî íèáëà
unsigned mem_addr_edit_mode; // ðåæèì ðåäàêòèðîâàíèÿ àäðåñà [NS]
//-------------------------------------------------------------------------
unsigned pc_trflags;
unsigned nextpc;
//-------------------------------------------------------------------------
unsigned dbg_stophere;
unsigned dbg_stopsp;
unsigned dbg_loop_r1;
unsigned dbg_loop_r2;
unsigned char dbgchk; // Ïðèçíàê íàëè÷èÿ àêòèâíûõ áðåêïîèíòîâ
bool int_pend; // Íà âõîäå int åñòü àêòèâíîå ïðåðûâàíèå
bool int_gate; // Ðàçðåøåíèå âíåøíèõ ïðåðûâàíèé
// 1 - ðàçðåøåíû
// 0 - çàïðåùåíû
//-------------------------------------------------------------------------
#define MAX_CBP 16
uintptr_t cbp[MAX_CBP][128]; // Óñëîâèÿ äëÿ óñëîâíûõ áðåêïîèíòîâ
unsigned cbpn;
i64 debug_last_t; // used to find time delta
u32 tpi; // ×èñëî òàêòîâ ìåæäó ïðåðûâàíèÿìè
u32 trpc[40];
// typedef u8 (__fastcall * TRmDbg)(u32 addr);
// typedef u8 *(__fastcall * TMemDbg)(u32 addr);
// typedef void (__fastcall * TWmDbg)(u32 addr, u8 val);
typedef void (__cdecl *TBankNames)(int i, char *Name);
typedef void (Z80FAST * TStep)();
typedef i64 (__cdecl * TDelta)();
typedef void (__cdecl * TSetLastT)();
// TRmDbg DirectRm; // direct read memory in debuger
// TWmDbg DirectWm; // direct write memory in debuger
// TMemDbg DirectMem; // get direct memory pointer in debuger
u32 Idx; // Èíäåêñ â ìàññèâå ïðîöåññîðîâ
TBankNames BankNames;
TStep Step;
TDelta Delta;
TSetLastT SetLastT;
u8 *membits;
u8 *io_bits; // [NS]
u8 *bp_disable_bits; // [NS]
u8 dbgbreak;
const TMemIf *FastMemIf; // Áûñòðûé èíòåðôåñ ïàìÿòè
const TMemIf *DbgMemIf; // Èíòåðôåéñ ïàìÿòè äëÿ ïîääåðæêè îòëàä÷èêà (áðåêïîèíòû íà äîñòóï ê ïàìÿòè)
const TMemIf *MemIf; // Òåêóùèé àêòèâíûé èíòåðôåéñ ïàìÿòè
//-------------------------------------------------------------------------
void reset()
{
int_flags = 0;
ir_ = 0;
pc = 0;
im = 0;
last_branch = 0;
int_pend = false;
int_gate = true;
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
// ?????????? ÷î ýòà çà êîíñòðóêöèÿ???? î_Î
Z80( u32 Idx,
TBankNames BankNames,
TStep Step,
TDelta Delta,
TSetLastT SetLastT,
u8 *membits,
u8 *io_bits, // [NS]
u8 *bp_disable_bits, // [NS]
const TMemIf *FastMemIf,
const TMemIf *DbgMemIf) :
Idx( Idx),
BankNames( BankNames),
Step( Step),
Delta( Delta),
SetLastT( SetLastT),
membits( membits),
io_bits( io_bits), // [NS]
bp_disable_bits( bp_disable_bits), // [NS]
FastMemIf(FastMemIf),
DbgMemIf(DbgMemIf)
{
MemIf = FastMemIf;
tpi = 0;
dbgbreak = 0;
dbgchk = 0;
debug_last_t = 0;
trace_curs = trace_top = (unsigned)-1; trace_mode = 0;
mem_curs = mem_top = 0;
pc_trflags = nextpc = 0;
dbg_stophere = dbg_stopsp = (unsigned)-1;
dbg_loop_r1 = 0;
dbg_loop_r2 = 0xFFFF;
int_pend = false;
int_gate = true;
nmi_in_progress = false;
}
//-------------------------------------------------------------------------
virtual ~Z80() { }
//-------------------------------------------------------------------------
u32 GetIdx() const { return Idx; }
//óñòàíîâêà ÷èñëà òàêòîâ â ôðåéìå
void SetTpi(u32 Tpi) { tpi = Tpi; }
void SetFastMemIf() { MemIf = FastMemIf; }
void SetDbgMemIf() { MemIf = DbgMemIf; }
u8 DirectRm(unsigned addr) const { return *DirectMem(addr); } // direct read memory in debuger
void DirectWm(unsigned addr, u8 val) { *DirectMem(addr) = val; } // direct write memory in debuger
/*
virtual unsigned char rm(unsigned addr) = 0;
virtual void wm(unsigned addr, unsigned char val) = 0;
*/
virtual u8 *DirectMem(unsigned addr) const = 0; // get direct memory pointer in debuger
virtual unsigned char in(unsigned port) = 0;
virtual void out(unsigned port, unsigned char val) = 0;
virtual unsigned char m1_cycle() = 0; // [vv] Íå çàâèñèò îò ïðîöåññîðà (âûíåñòè â áèáëèîòåêó)
virtual u8 IntVec() = 0; // Ôóíêöèÿ âîçâðàùàþùàÿ çíà÷åíèå âåêòîðà ïðåðûâàíèÿ äëÿ im2
virtual void CheckNextFrame() = 0; // Ïðîâåðêà è îáíîâëåíèÿ ñ÷åò÷èêà êàäðîâ è òàêòîâ âíóòðè ïðåðûâàíèÿ
virtual void retn() = 0; // Âûçûâàåòñÿ â êîíöå èíñòðóêöèè retn (äîëæíà ñáðàñûâàòü ôëàã nmi_in_progress è îáíîâëÿòü ðàñêëàäêó ïàìÿòè)
};
//=============================================================================
//=============================================================================
#define CF 0x01
#define NF 0x02
#define PV 0x04
#define F3 0x08
#define HF 0x10
#define F5 0x20
#define ZF 0x40
#define SF 0x80
//=============================================================================
#endif // _Z80_DEFS_H_INCLUDED