#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; // ╥хъє∙шщ ЄръЄ яЁюЎхёёюЁр тэєЄЁш spectrum ърфЁр [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;
unsigned char iff2;
unsigned char halted;
};
};
/*------------------------------*/
union
{
unsigned bc;
unsigned short bc16;
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
{
union
{
unsigned bc;
struct
{
unsigned char c;
unsigned char b;
};
};
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;
};
};
} alt;
union
{
unsigned memptr; // undocumented register
struct
{
unsigned char meml;
unsigned char memh;
};
};
unsigned eipos, haltpos;
/*------------------------------*/
unsigned char im;
unsigned char nmi_in_progress;
};
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;
unsigned trace_curs, trace_top, trace_mode;
unsigned mem_curs, mem_top, mem_second;
unsigned pc_trflags;
unsigned nextpc;
unsigned dbg_stophere;
unsigned dbg_stopsp;
unsigned dbg_loop_r1;
unsigned dbg_loop_r2;
unsigned char dbgchk; // ╧Ёшчэръ эрышўш ръЄштэ√ї сЁхъяюшэЄют
bool int_pend; // ═р тїюфх int хёЄ№ ръЄштэюх яЁхЁ√трэшх
bool int_gate; // ╨рчЁх°хэшх тэх°эшї яЁхЁ√трэшщ (1-ЁрчЁх°хэ√/0 - чряЁх∙хэ√)
#define MAX_CBP 16
uintptr_t cbp[MAX_CBP][128]; // ╙ёыютш фы єёыютэ√ї сЁхъяюшэЄют
unsigned cbpn;
i64 debug_last_t; // used to find time delta
u32 tpi; // ╫шёыю ЄръЄют ьхцфє яЁхЁ√трэш ьш
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; // ╚эфхъё т ьрёёштх яЁюЎхёёюЁют
TBankNames BankNames;
TStep Step;
TDelta Delta;
TSetLastT SetLastT;
u8 *membits;
u8 dbgbreak;
const TMemIf *FastMemIf; // ┴√ёЄЁ√щ шэЄхЁЇхё ярь Єш
const TMemIf *DbgMemIf; // ╚эЄхЁЇхщё ярь Єш фы яюффхЁцъш юЄырфўшър (сЁхъяюшэЄ√ эр фюёЄєя ъ ярь Єш)
const TMemIf *MemIf; // ╥хъє∙шщ ръЄштэ√щ шэЄхЁЇхщё ярь Єш
void reset() { int_flags = ir_ = pc = 0; im = 0; last_branch = 0; int_pend = false; int_gate = true; }
Z80(u32 Idx, TBankNames BankNames, TStep Step, TDelta Delta,
TSetLastT SetLastT, u8 *membits, const TMemIf *FastMemIf, const TMemIf *DbgMemIf) :
Idx(Idx),
BankNames(BankNames),
Step(Step), Delta(Delta), SetLastT(SetLastT), membits(membits),
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; }
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] ═х чртшёшЄ юЄ яЁюЎхёёюЁр (т√эхёЄш т сшсышюЄхъє)
virtual u8 IntVec() = 0; // ╘єэъЎш тючтЁр∙р■∙р чэрўхэшх тхъЄюЁр яЁхЁ√трэш фы im2
virtual void CheckNextFrame() = 0; // ╧ЁютхЁър ш юсэютыхэш ёўхЄўшър ърфЁют ш ЄръЄют тэєЄЁш яЁхЁ√трэш
virtual void retn() = 0; // ┬√ч√трхЄё т ъюэЎх шэёЄЁєъЎшш retn (фюыцэр ёсЁрё√трЄ№ Їыру nmi_in_progress ш юсэюты Є№ Ёрёъырфъє ярь Єш)
};
#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