mirror of https://github.com/PCSX2/pcsx2.git
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/* Pcsx2 - Pc Ps2 Emulator
|
|
* Copyright (C) 2002-2009 Pcsx2 Team
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
|
|
#ifndef _SIO_H_
|
|
#define _SIO_H_
|
|
|
|
// SIO IRQ Timings...
|
|
// Scheduling ints into the future is a purist approach to emulation, and
|
|
// is mostly cosmetic since the emulator itself performs all actions instantly
|
|
// (as far as the emulated CPU is concerned). In some cases this can actually
|
|
// cause more sync problems than it supposedly solves, due to accumulated
|
|
// delays incurred by the recompiler's low cycle update rate and also Pcsx2
|
|
// failing to properly handle pre-emptive DMA/IRQs or cpu exceptions.
|
|
|
|
// The SIO is one of these cases, where-by many games seem to be a lot happier
|
|
// if the SIO handles its IRQs instantly instead of scheduling them.
|
|
// Uncomment the line below for SIO instant-IRQ mode. It improves responsiveness
|
|
// considerably, fixes PAD latency problems in some games, and may even reduce the
|
|
// chance of saves getting corrupted (untested). But it lacks the purist touch,
|
|
// so it's not enabled by default.
|
|
|
|
//#define SIO_INLINE_IRQS
|
|
|
|
|
|
struct _sio {
|
|
u16 StatReg;
|
|
u16 ModeReg;
|
|
u16 CtrlReg;
|
|
u16 BaudReg;
|
|
|
|
u8 buf[256];
|
|
u32 bufcount;
|
|
u32 parp;
|
|
u32 mcdst,rdwr;
|
|
u8 adrH,adrL;
|
|
u32 padst;
|
|
u32 mtapst;
|
|
u32 packetsize;
|
|
|
|
u8 terminator;
|
|
u8 mode;
|
|
u8 mc_command;
|
|
u32 lastsector;
|
|
u32 sector;
|
|
u32 k;
|
|
u32 count;
|
|
|
|
int GetMemcardIndex() const
|
|
{
|
|
return (CtrlReg&0x2000) >> 13;
|
|
}
|
|
};
|
|
|
|
extern _sio sio;
|
|
|
|
// Status Flags
|
|
#define TX_RDY 0x0001
|
|
#define RX_RDY 0x0002
|
|
#define TX_EMPTY 0x0004
|
|
#define PARITY_ERR 0x0008
|
|
#define RX_OVERRUN 0x0010
|
|
#define FRAMING_ERR 0x0020
|
|
#define SYNC_DETECT 0x0040
|
|
#define DSR 0x0080
|
|
#define CTS 0x0100
|
|
#define IRQ 0x0200
|
|
|
|
// Control Flags
|
|
#define TX_PERM 0x0001
|
|
#define DTR 0x0002
|
|
#define RX_PERM 0x0004
|
|
#define BREAK 0x0008
|
|
#define RESET_ERR 0x0010
|
|
#define RTS 0x0020
|
|
#define SIO_RESET 0x0040
|
|
|
|
extern void sioInit();
|
|
extern void sioShutdown();
|
|
extern void psxSIOShutdown();
|
|
extern u8 sioRead8();
|
|
extern void sioWrite8(u8 value);
|
|
extern void sioWriteCtrl16(u16 value);
|
|
extern void sioInterrupt();
|
|
extern void InitializeSIO(u8 value);
|
|
extern void sioEjectCard( uint mcdId );
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma pack(1)
|
|
#endif
|
|
struct mc_command_0x26_tag{
|
|
u8 field_151; //+02 flags
|
|
u16 sectorSize; //+03 divide to it
|
|
u16 field_2C; //+05 divide to it
|
|
u32 mc_size; //+07
|
|
u8 mc_xor; //+0b don't forget to recalculate it!!!
|
|
u8 Z; //+0c
|
|
#ifdef _MSC_VER
|
|
};
|
|
#pragma pack()
|
|
#else
|
|
} __attribute__((packed));
|
|
#endif
|
|
|
|
#endif
|