mirror of
https://github.com/akuker/RASCSI.git
synced 2024-11-19 12:32:29 +00:00
08194af424
- Moved C++ code to cpp/ from src/raspberrypi - Related updates to Makefile, easyinstall.sh, and the github build rules - Removed the native X68k C code in src/x68k from the repo
114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
//---------------------------------------------------------------------------
|
||
//
|
||
// X68000 EMULATOR "XM6"
|
||
//
|
||
// Copyright (C) 2001-2006 ＰＩ．(ytanaka@ipc-tokai.or.jp)
|
||
// Copyright (C) 2014-2020 GIMONS
|
||
//
|
||
//---------------------------------------------------------------------------
|
||
|
||
#pragma once
|
||
|
||
#include "os.h"
|
||
#include "scsi.h"
|
||
#include <array>
|
||
#include <unordered_map>
|
||
|
||
using namespace std;
|
||
|
||
class BUS
|
||
{
|
||
public:
|
||
// Operation modes definition
|
||
enum class mode_e {
|
||
TARGET = 0,
|
||
INITIATOR = 1,
|
||
MONITOR = 2,
|
||
};
|
||
|
||
// Phase definitions
|
||
enum class phase_t : int {
|
||
busfree,
|
||
arbitration,
|
||
selection,
|
||
reselection,
|
||
command,
|
||
datain,
|
||
dataout,
|
||
status,
|
||
msgin,
|
||
msgout,
|
||
reserved
|
||
};
|
||
|
||
BUS() = default;
|
||
virtual ~BUS() = default;
|
||
|
||
// Basic Functions
|
||
virtual bool Init(mode_e mode) = 0;
|
||
virtual void Reset() = 0;
|
||
virtual void Cleanup() = 0;
|
||
phase_t GetPhase();
|
||
|
||
static phase_t GetPhase(int mci)
|
||
{
|
||
return phase_table[mci];
|
||
}
|
||
|
||
// Get the string phase name, based upon the raw data
|
||
static const char* GetPhaseStrRaw(phase_t current_phase);
|
||
|
||
// Extract as specific pin field from a raw data capture
|
||
static inline uint32_t GetPinRaw(uint32_t raw_data, uint32_t pin_num)
|
||
{
|
||
return ((raw_data >> pin_num) & 1);
|
||
}
|
||
|
||
virtual bool GetBSY() const = 0;
|
||
virtual void SetBSY(bool ast) = 0;
|
||
|
||
virtual bool GetSEL() const = 0;
|
||
virtual void SetSEL(bool ast) = 0;
|
||
|
||
virtual bool GetATN() const = 0;
|
||
virtual void SetATN(bool ast) = 0;
|
||
|
||
virtual bool GetACK() const = 0;
|
||
virtual void SetACK(bool ast) = 0;
|
||
|
||
virtual bool GetRST() const = 0;
|
||
virtual void SetRST(bool ast) = 0;
|
||
|
||
virtual bool GetMSG() const = 0;
|
||
virtual void SetMSG(bool ast) = 0;
|
||
|
||
virtual bool GetCD() const = 0;
|
||
virtual void SetCD(bool ast) = 0;
|
||
|
||
virtual bool GetIO() = 0;
|
||
virtual void SetIO(bool ast) = 0;
|
||
|
||
virtual bool GetREQ() const = 0;
|
||
virtual void SetREQ(bool ast) = 0;
|
||
|
||
virtual BYTE GetDAT() = 0;
|
||
virtual void SetDAT(BYTE dat) = 0;
|
||
virtual bool GetDP() const = 0; // Get parity signal
|
||
|
||
virtual uint32_t Acquire() = 0;
|
||
virtual int CommandHandShake(BYTE *buf) = 0;
|
||
virtual int ReceiveHandShake(BYTE *buf, int count) = 0;
|
||
virtual int SendHandShake(BYTE *buf, int count, int delay_after_bytes) = 0;
|
||
|
||
virtual bool GetSignal(int pin) const = 0;
|
||
// Get SCSI input signal value
|
||
virtual void SetSignal(int pin, bool ast) = 0;
|
||
// Set SCSI output signal value
|
||
static const int SEND_NO_DELAY = -1;
|
||
// Passed into SendHandShake when we don't want to delay
|
||
private:
|
||
static const array<phase_t, 8> phase_table;
|
||
|
||
static const unordered_map<phase_t, const char *> phase_str_mapping;
|
||
};
|