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BizHawk/lynx/mikie.h

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//
// Copyright (c) 2004 K. Wilkins
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from
// the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
//////////////////////////////////////////////////////////////////////////////
// Handy - An Atari Lynx Emulator //
// Copyright (c) 1996,1997 //
// K. Wilkins //
//////////////////////////////////////////////////////////////////////////////
// Mikey class header file //
//////////////////////////////////////////////////////////////////////////////
// //
// This header file provides the interface definition and some of the code //
// for the Mikey chip within the Lynx. The most crucial code is the //
// Update() function which as you can probably guess updates all of the //
// Mikey hardware counters and screen DMA from the prevous time it was //
// called. Yes I know how to spell Mikey but I cant be bothered to change //
// it everywhere. //
// //
// K. Wilkins //
// August 1997 //
// //
//////////////////////////////////////////////////////////////////////////////
// Revision History: //
// ----------------- //
// //
// 01Aug1997 KW Document header added & class documented. //
// //
//////////////////////////////////////////////////////////////////////////////
#ifndef MIKIE_H
#define MIKIE_H
//#include <crtdbg.h>
//#define TRACE_MIKIE
#include <math.h>
#ifdef TRACE_MIKIE
#define TRACE_MIKIE0(msg) _RPT1(_CRT_WARN,"CMikie::"msg" (Time=%012d)\n",gSystemCycleCount)
#define TRACE_MIKIE1(msg,arg1) _RPT2(_CRT_WARN,"CMikie::"msg" (Time=%012d)\n",arg1,gSystemCycleCount)
#define TRACE_MIKIE2(msg,arg1,arg2) _RPT3(_CRT_WARN,"CMikie::"msg" (Time=%012d)\n",arg1,arg2,gSystemCycleCount)
#define TRACE_MIKIE3(msg,arg1,arg2,arg3) _RPT4(_CRT_WARN,"CMikie::"msg" (Time=%012d)\n",arg1,arg2,arg3,gSystemCycleCount)
#else
#define TRACE_MIKIE0(msg)
#define TRACE_MIKIE1(msg,arg1)
#define TRACE_MIKIE2(msg,arg1,arg2)
#define TRACE_MIKIE3(msg,arg1,arg2,arg3)
#endif
class CSystem;
#define MIKIE_START 0xfd00
#define MIKIE_SIZE 0x100
//
// Define counter types and defines
//
#define CTRL_A_IRQEN 0x80
#define CTRL_A_RTD 0x40
#define CTRL_A_RELOAD 0x10
#define CTRL_A_COUNT 0x08
#define CTRL_A_DIVIDE 0x07
#define CTRL_B_TDONE 0x08
#define CTRL_B_LASTCK 0x04
#define CTRL_B_CIN 0x02
#define CTRL_B_COUT 0x01
#define LINE_TIMER 0x00
#define SCREEN_TIMER 0x02
#define LINE_WIDTH 160
#define LINE_SIZE 80
#define UART_TX_INACTIVE 0x80000000
#define UART_RX_INACTIVE 0x80000000
#define UART_BREAK_CODE 0x00008000
#define UART_MAX_RX_QUEUE 32
#define UART_TX_TIME_PERIOD (11)
#define UART_RX_TIME_PERIOD (11)
#define UART_RX_NEXT_DELAY (44)
typedef struct
{
union
{
struct
{
#ifdef MSB_FIRST
uint8 unused:4;
uint8 Colour:1;
uint8 FourColour:1;
uint8 Flip:1;
uint8 DMAEnable:1;
#else
uint8 DMAEnable:1;
uint8 Flip:1;
uint8 FourColour:1;
uint8 Colour:1;
uint8 unused:4;
#endif
}Bits;
uint8 Byte;
};
}TDISPCTL;
typedef struct
{
union
{
struct
{
#ifdef MSB_FIRST
uint8 unused:8;
uint8 unused2:8;
uint8 unused3:4;
uint8 Blue:4;
uint8 Red:4;
uint8 Green:4;
#else
uint8 Green:4;
uint8 Red:4;
uint8 Blue:4;
#endif
}Colours;
uint32 Index;
};
}TPALETTE;
//
// Emumerated types for possible mikie windows independant modes
//
enum
{
MIKIE_BAD_MODE=0,
MIKIE_NO_ROTATE,
MIKIE_ROTATE_L,
MIKIE_ROTATE_R
};
/*
enum
{
MIKIE_PIXEL_FORMAT_8BPP=0,
MIKIE_PIXEL_FORMAT_16BPP_555,
MIKIE_PIXEL_FORMAT_16BPP_565,
MIKIE_PIXEL_FORMAT_24BPP,
MIKIE_PIXEL_FORMAT_32BPP,
};
*/
#include "sound/Stereo_Buffer.h"
typedef Blip_Synth<blip_good_quality, 256 * 4> Synth;
class CMikie : public CLynxBase
{
public:
CMikie(CSystem& parent) MDFN_COLD;
~CMikie() MDFN_COLD;
uint32 startTS;
Synth miksynth;
Stereo_Buffer mikbuf;
void Reset() MDFN_COLD;
uint8 Peek(uint32 addr);
void Poke(uint32 addr,uint8 data);
uint32 ReadCycle() {return 5;};
uint32 WriteCycle() {return 5;};
uint32 ObjectSize() {return MIKIE_SIZE;};
void PresetForHomebrew();
uint32 GetLfsrNext(uint32 current);
void ComLynxCable(int status);
void ComLynxRxData(int data);
void ComLynxTxLoopback(int data);
void ComLynxTxCallback(void (*function)(int data,uint32 objref),uint32 objref);
void DisplaySetAttributes();
void BlowOut();
uint32 DisplayRenderLine();
uint32 DisplayEndOfFrame();
inline void SetCPUSleep();
inline void ClearCPUSleep();
void CombobulateSound(uint32 teatime);
void Update();
void CheckWrap();
uint32 mpDisplayCurrentLine;
uint32 framebuffer[SCREEN_WIDTH * SCREEN_HEIGHT];
template<bool isReader>void SyncState(NewState *ns);
private:
CSystem &mSystem;
int last_lsample;
int last_rsample;
// Hardware storage
uint32 mDisplayAddress;
uint32 mAudioInputComparator;
uint32 mTimerStatusFlags;
uint32 mTimerInterruptMask;
TPALETTE mPalette[16];
uint32 mColourMap[4096];
uint32 mIODAT;
uint32 mIODIR;
uint32 mIODAT_REST_SIGNAL;
uint32 mDISPCTL_DMAEnable;
uint32 mDISPCTL_Flip;
uint32 mDISPCTL_FourColour;
uint32 mDISPCTL_Colour;
uint32 mTIM_0_BKUP;
uint32 mTIM_0_ENABLE_RELOAD;
uint32 mTIM_0_ENABLE_COUNT;
uint32 mTIM_0_LINKING;
uint32 mTIM_0_CURRENT;
uint32 mTIM_0_TIMER_DONE;
uint32 mTIM_0_LAST_CLOCK;
uint32 mTIM_0_BORROW_IN;
uint32 mTIM_0_BORROW_OUT;
uint32 mTIM_0_LAST_LINK_CARRY;
uint32 mTIM_0_LAST_COUNT;
uint32 mTIM_1_BKUP;
uint32 mTIM_1_ENABLE_RELOAD;
uint32 mTIM_1_ENABLE_COUNT;
uint32 mTIM_1_LINKING;
uint32 mTIM_1_CURRENT;
uint32 mTIM_1_TIMER_DONE;
uint32 mTIM_1_LAST_CLOCK;
uint32 mTIM_1_BORROW_IN;
uint32 mTIM_1_BORROW_OUT;
uint32 mTIM_1_LAST_LINK_CARRY;
uint32 mTIM_1_LAST_COUNT;
uint32 mTIM_2_BKUP;
uint32 mTIM_2_ENABLE_RELOAD;
uint32 mTIM_2_ENABLE_COUNT;
uint32 mTIM_2_LINKING;
uint32 mTIM_2_CURRENT;
uint32 mTIM_2_TIMER_DONE;
uint32 mTIM_2_LAST_CLOCK;
uint32 mTIM_2_BORROW_IN;
uint32 mTIM_2_BORROW_OUT;
uint32 mTIM_2_LAST_LINK_CARRY;
uint32 mTIM_2_LAST_COUNT;
uint32 mTIM_3_BKUP;
uint32 mTIM_3_ENABLE_RELOAD;
uint32 mTIM_3_ENABLE_COUNT;
uint32 mTIM_3_LINKING;
uint32 mTIM_3_CURRENT;
uint32 mTIM_3_TIMER_DONE;
uint32 mTIM_3_LAST_CLOCK;
uint32 mTIM_3_BORROW_IN;
uint32 mTIM_3_BORROW_OUT;
uint32 mTIM_3_LAST_LINK_CARRY;
uint32 mTIM_3_LAST_COUNT;
uint32 mTIM_4_BKUP;
uint32 mTIM_4_ENABLE_RELOAD;
uint32 mTIM_4_ENABLE_COUNT;
uint32 mTIM_4_LINKING;
uint32 mTIM_4_CURRENT;
uint32 mTIM_4_TIMER_DONE;
uint32 mTIM_4_LAST_CLOCK;
uint32 mTIM_4_BORROW_IN;
uint32 mTIM_4_BORROW_OUT;
uint32 mTIM_4_LAST_LINK_CARRY;
uint32 mTIM_4_LAST_COUNT;
uint32 mTIM_5_BKUP;
uint32 mTIM_5_ENABLE_RELOAD;
uint32 mTIM_5_ENABLE_COUNT;
uint32 mTIM_5_LINKING;
uint32 mTIM_5_CURRENT;
uint32 mTIM_5_TIMER_DONE;
uint32 mTIM_5_LAST_CLOCK;
uint32 mTIM_5_BORROW_IN;
uint32 mTIM_5_BORROW_OUT;
uint32 mTIM_5_LAST_LINK_CARRY;
uint32 mTIM_5_LAST_COUNT;
uint32 mTIM_6_BKUP;
uint32 mTIM_6_ENABLE_RELOAD;
uint32 mTIM_6_ENABLE_COUNT;
uint32 mTIM_6_LINKING;
uint32 mTIM_6_CURRENT;
uint32 mTIM_6_TIMER_DONE;
uint32 mTIM_6_LAST_CLOCK;
uint32 mTIM_6_BORROW_IN;
uint32 mTIM_6_BORROW_OUT;
uint32 mTIM_6_LAST_LINK_CARRY;
uint32 mTIM_6_LAST_COUNT;
uint32 mTIM_7_BKUP;
uint32 mTIM_7_ENABLE_RELOAD;
uint32 mTIM_7_ENABLE_COUNT;
uint32 mTIM_7_LINKING;
uint32 mTIM_7_CURRENT;
uint32 mTIM_7_TIMER_DONE;
uint32 mTIM_7_LAST_CLOCK;
uint32 mTIM_7_BORROW_IN;
uint32 mTIM_7_BORROW_OUT;
uint32 mTIM_7_LAST_LINK_CARRY;
uint32 mTIM_7_LAST_COUNT;
uint32 mAUDIO_BKUP[4];
uint32 mAUDIO_ENABLE_RELOAD[4];
uint32 mAUDIO_ENABLE_COUNT[4];
uint32 mAUDIO_LINKING[4];
uint32 mAUDIO_CURRENT[4];
uint32 mAUDIO_TIMER_DONE[4];
uint32 mAUDIO_LAST_CLOCK[4];
uint32 mAUDIO_BORROW_IN[4];
uint32 mAUDIO_BORROW_OUT[4];
uint32 mAUDIO_LAST_LINK_CARRY[4];
uint32 mAUDIO_LAST_COUNT[4];
int8 mAUDIO_VOLUME[4];
uint32 mAUDIO_INTEGRATE_ENABLE[4];
uint32 mAUDIO_WAVESHAPER[4];
int8 mAUDIO_OUTPUT[4];
uint8 mAUDIO_ATTEN[4];
uint32 mSTEREO;
uint32 mPAN;
//
// Serial related variables
//
uint32 mUART_RX_IRQ_ENABLE;
uint32 mUART_TX_IRQ_ENABLE;
uint32 mUART_RX_COUNTDOWN;
uint32 mUART_TX_COUNTDOWN;
uint32 mUART_SENDBREAK;
uint32 mUART_TX_DATA;
uint32 mUART_RX_DATA;
uint32 mUART_RX_READY;
uint32 mUART_PARITY_ENABLE;
uint32 mUART_PARITY_EVEN;
int mUART_CABLE_PRESENT;
void (*mpUART_TX_CALLBACK)(int data,uint32 objref);
uint32 mUART_TX_CALLBACK_OBJECT;
int mUART_Rx_input_queue[UART_MAX_RX_QUEUE];
unsigned int mUART_Rx_input_ptr;
unsigned int mUART_Rx_output_ptr;
int mUART_Rx_waiting;
int mUART_Rx_framing_error;
int mUART_Rx_overun_error;
//
// Screen related
//
uint8 *mpRamPointer;
uint32 mLynxLine;
uint32 mLynxLineDMACounter;
uint32 mLynxAddr;
void CopyLineSurface();
void BlankLineSurface();
};
#endif
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