mirror of https://github.com/PCSX2/pcsx2.git
137 lines
4.9 KiB
C++
137 lines
4.9 KiB
C++
// SPDX-FileCopyrightText: 2002-2024 PCSX2 Dev Team
|
|
// SPDX-License-Identifier: GPL-3.0+
|
|
|
|
#pragma once
|
|
|
|
#include "MemoryTypes.h"
|
|
|
|
struct EECNT_MODE
|
|
{
|
|
// 0 - BUSCLK
|
|
// 1 - 1/16th of BUSCLK
|
|
// 2 - 1/256th of BUSCLK
|
|
// 3 - External Clock (hblank!)
|
|
u32 ClockSource:2;
|
|
|
|
// Enables the counter gate (turns counter on/off as according to the
|
|
// h/v blank type set in GateType).
|
|
u32 EnableGate:1;
|
|
|
|
// 0 - hblank! 1 - vblank!
|
|
// Note: the hblank source type is disabled when ClockSel = 3
|
|
u32 GateSource:1;
|
|
|
|
// 0 - count when the gate signal is low
|
|
// 1 - reset at the signal's rising edge (h/v blank start)
|
|
// 2 - reset at the signal's falling edge (h/v blank end)
|
|
// 3 - reset at both signal edges
|
|
u32 GateMode:2;
|
|
|
|
// Counter cleared to zero when target reached.
|
|
// The PS2 only resets if the TargetInterrupt is enabled - Tested on PS2
|
|
u32 ZeroReturn:1;
|
|
|
|
// General count enable/status. If 0, no counting happens.
|
|
// This flag is set/unset by the gates.
|
|
u32 IsCounting:1;
|
|
|
|
// Enables target interrupts.
|
|
u32 TargetInterrupt:1;
|
|
|
|
// Enables overflow interrupts.
|
|
u32 OverflowInterrupt:1;
|
|
|
|
// Set to true by the counter when the target is reached.
|
|
// Flag is set only when TargetInterrupt is enabled.
|
|
u32 TargetReached:1;
|
|
|
|
// Set to true by the counter when the target has overflowed.
|
|
// Flag is set only when OverflowInterrupt is enabled.
|
|
u32 OverflowReached:1;
|
|
};
|
|
|
|
struct Counter
|
|
{
|
|
u32 count;
|
|
union
|
|
{
|
|
u32 modeval; // the mode as a 32 bit int (for optimized combination masks)
|
|
EECNT_MODE mode;
|
|
};
|
|
u32 target, hold;
|
|
u32 rate, interrupt;
|
|
u32 startCycle; // delta values should be signed.
|
|
};
|
|
|
|
struct SyncCounter
|
|
{
|
|
u32 Mode;
|
|
u32 startCycle; // start cycle of timer
|
|
s32 deltaCycles;
|
|
};
|
|
|
|
//------------------------------------------------------------------
|
|
// SPEED HACKS!!! (1 is normal) (They have inverse affects, only set 1 at a time)
|
|
//------------------------------------------------------------------
|
|
#define HBLANK_COUNTER_SPEED 1 //Set to '3' to double the speed of games like KHII
|
|
//#define HBLANK_TIMER_SLOWDOWN 1 //Set to '2' to increase the speed of games like God of War (FPS will be less, but game will be faster)
|
|
|
|
#define SCANLINES_TOTAL_1080 1125 // total number of scanlines for 1080I mode
|
|
//------------------------------------------------------------------
|
|
// NTSC Timing Information!!! (some scanline info is guessed)
|
|
//------------------------------------------------------------------
|
|
#define FRAMERATE_NTSC 29.97 // frames per second
|
|
|
|
#define SCANLINES_TOTAL_NTSC_I 525 // total number of scanlines (Interlaced)
|
|
#define SCANLINES_TOTAL_NTSC_NI 526 // total number of scanlines (Interlaced)
|
|
#define SCANLINES_VSYNC_NTSC 3 // scanlines that are used for syncing every half-frame
|
|
#define SCANLINES_VRENDER_NTSC 240 // scanlines in a half-frame (because of interlacing)
|
|
#define SCANLINES_VBLANK1_NTSC 19 // scanlines used for vblank1 (even interlace)
|
|
#define SCANLINES_VBLANK2_NTSC 20 // scanlines used for vblank2 (odd interlace)
|
|
|
|
//------------------------------------------------------------------
|
|
// PAL Timing Information!!! (some scanline info is guessed)
|
|
//------------------------------------------------------------------
|
|
#define FRAMERATE_PAL 25.0// frames per second * 100 (25)
|
|
|
|
#define SCANLINES_TOTAL_PAL_I 625 // total number of scanlines per frame (Interlaced)
|
|
#define SCANLINES_TOTAL_PAL_NI 628 // total number of scanlines per frame (Not Interlaced)
|
|
#define SCANLINES_VSYNC_PAL 5 // scanlines that are used for syncing every half-frame
|
|
#define SCANLINES_VRENDER_PAL 288 // scanlines in a half-frame (because of interlacing)
|
|
#define SCANLINES_VBLANK1_PAL 19 // scanlines used for vblank1 (even interlace)
|
|
#define SCANLINES_VBLANK2_PAL 20 // scanlines used for vblank2 (odd interlace)
|
|
|
|
//------------------------------------------------------------------
|
|
// vSync and hBlank Timing Modes
|
|
//------------------------------------------------------------------
|
|
#define MODE_VRENDER 0x0 //Set during the Render/Frame Scanlines
|
|
#define MODE_VBLANK 0x1 //Set during the Blanking Scanlines
|
|
#define MODE_GSBLANK 0x2 //Set during the Syncing Scanlines (Delayed GS CSR Swap)
|
|
|
|
#define MODE_HRENDER 0x0 //Set for ~5/6 of 1 Scanline
|
|
#define MODE_HBLANK 0x1 //Set for the remaining ~1/6 of 1 Scanline
|
|
|
|
extern const char* ReportVideoMode();
|
|
extern const char* ReportInterlaceMode();
|
|
extern Counter counters[4];
|
|
extern SyncCounter hsyncCounter;
|
|
extern SyncCounter vsyncCounter;
|
|
|
|
extern s32 nextDeltaCounter; // delta until the next counter event (must be signed)
|
|
extern u32 nextStartCounter;
|
|
extern uint g_FrameCount;
|
|
|
|
extern void rcntUpdate_hScanline();
|
|
extern void rcntUpdate_vSync();
|
|
extern bool rcntCanCount(int i);
|
|
extern void rcntSyncCounter(int i);
|
|
extern void rcntUpdate();
|
|
|
|
extern void rcntInit();
|
|
extern u32 rcntRcount(int index);
|
|
template< uint page > extern bool rcntWrite32( u32 mem, mem32_t& value );
|
|
template< uint page > extern u16 rcntRead32( u32 mem ); // returns u16 by design! (see implementation for details)
|
|
|
|
extern void UpdateVSyncRate(bool force);
|
|
|