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william |
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/* PCSX2 - PS2 Emulator for PCs |
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* Copyright (C) 2002-2010 PCSX2 Dev Team |
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* |
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms |
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* of the GNU Lesser General Public License as published by the Free Software Found- |
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* ation, either version 3 of the License, or (at your option) any later version. |
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* |
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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* PURPOSE. See the GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along with PCSX2. |
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* If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "PrecompiledHeader.h" |
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#include "IopCommon.h" |
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#include "Sio.h" |
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#include "sio_internal.h" |
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_sio sio; |
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static const u8 cardh[4] = { 0xFF, 0xFF, 0x5a, 0x5d }; |
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// Memory Card Specs for standard Sony 8mb carts: |
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// Flags (magic sio '+' thingie!), Sector size, eraseBlockSize (in pages), card size (in pages), xor checksum (superblock?), terminator (unused?). |
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static const mc_command_0x26_tag mc_sizeinfo_8mb= {'+', 512, 16, 0x4000, 0x52, 0x5A}; |
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// Ejection timeout management belongs in the MemoryCardFile plugin, except the plugin |
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// interface is not yet complete. |
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static int m_ForceEjectionTimeout[2]; |
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// SIO Inline'd IRQs : Calls the SIO interrupt handlers directly instead of |
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// feeding them through the IOP's branch test. (see SIO.H for details) |
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#ifdef SIO_INLINE_IRQS |
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#define SIO_INT() sioInterrupt() |
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#define SIO_FORCEINLINE __forceinline |
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#else |
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__forceinline void SIO_INT() |
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{ |
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if( !(psxRegs.interrupt & (1<<IopEvt_SIO)) ) |
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PSX_INT(IopEvt_SIO, 64 ); // PSXCLK/250000); |
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} |
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#define SIO_FORCEINLINE __forceinline |
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#endif |
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// Currently only check if pad wants mtap to be active. |
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// Could lets PCSX2 have its own options, if anyone ever |
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// wants to add support for using the extra memcard slots. |
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static bool IsMtapPresent( uint port ) |
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{ |
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return EmuConfig.MultitapEnabled( port ); |
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//return (0 != PADqueryMtap(port+1)); |
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} |
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static void _ReadMcd(u8 *data, u32 adr, int size) |
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{ |
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SysPlugins.McdRead( |
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sio.GetMemcardIndex(), sio.activeMemcardSlot[sio.GetMemcardIndex()], |
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data, adr, size |
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); |
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} |
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static void _SaveMcd(const u8 *data, u32 adr, int size) |
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{ |
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SysPlugins.McdSave( |
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sio.GetMemcardIndex(), sio.activeMemcardSlot[sio.GetMemcardIndex()], |
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data, adr, size |
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); |
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} |
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static void _EraseMCDBlock(u32 adr) |
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{ |
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SysPlugins.McdEraseBlock( sio.GetMemcardIndex(), sio.activeMemcardSlot[sio.GetMemcardIndex()], adr ); |
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} |
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static u8 sio_xor( const u8 *buf, uint length ) |
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{ |
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u8 i, x; |
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for (x=0, i=0; i<length; i++) x ^= buf[i]; |
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return x; |
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} |
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template< typename T > |
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static void apply_xor( u8& dest, const T& src ) |
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{ |
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u8* buf = (u8*)&src; |
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for (uint x=0; x<sizeof(src); x++) dest ^= buf[x]; |
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} |
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void sioInit() |
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{ |
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memzero(sio); |
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memzero(m_ForceEjectionTimeout); |
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// Transfer(?) Ready and the Buffer is Empty |
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sio.StatReg = TX_RDY | TX_EMPTY; |
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sio.packetsize = 0; |
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sio.terminator = 0x55; // Command terminator 'U' |
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} |
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u8 sioRead8() { |
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u8 ret = 0xFF; |
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if (sio.StatReg & RX_RDY) { |
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ret = sio.buf[sio.parp]; |
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if (sio.parp == sio.bufcount) { |
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sio.StatReg &= ~RX_RDY; // Receive is not Ready now? |
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sio.StatReg |= TX_EMPTY; // Buffer is Empty |
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if (sio.padst == 2) sio.padst = 0; |
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/*if (sio.mcdst == 1) { |
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sio.mcdst = 99; |
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sio.StatReg&= ~TX_EMPTY; |
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sio.StatReg|= RX_RDY; |
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}*/ |
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} |
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} |
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//PAD_LOG("sio read8 ;ret = %x", ret); |
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return ret; |
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} |
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void SIO_CommandWrite(u8 value,int way) { |
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PAD_LOG("sio write8 %x", value); |
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// PAD COMMANDS |
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switch (sio.padst) { |
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case 1: SIO_INT(); |
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if ((value&0x40) == 0x40) { |
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sio.padst = 2; sio.parp = 1; |
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switch (sio.CtrlReg&0x2002) { |
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case 0x0002: |
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sio.packetsize ++; // Total packet size sent |
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sio.buf[sio.parp] = PADpoll(value); |
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break; |
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case 0x2002: |
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sio.packetsize ++; // Total packet size sent |
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sio.buf[sio.parp] = PADpoll(value); |
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break; |
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} |
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if (!(sio.buf[sio.parp] & 0x0f)) { |
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sio.bufcount = 2 + 32; |
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} else { |
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sio.bufcount = 2 + (sio.buf[sio.parp] & 0x0f) * 2; |
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} |
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} |
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else sio.padst = 0; |
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return; |
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case 2: |
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sio.parp++; |
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switch (sio.CtrlReg&0x2002) { |
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case 0x0002: sio.packetsize ++; sio.buf[sio.parp] = PADpoll(value); break; |
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case 0x2002: sio.packetsize ++; sio.buf[sio.parp] = PADpoll(value); break; |
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} |
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if (sio.parp == sio.bufcount) { sio.padst = 0; return; } |
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SIO_INT(); |
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return; |
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case 3: |
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// No pad connected. |
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sio.parp++; |
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if (sio.parp == sio.bufcount) { sio.padst = 0; return; } |
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SIO_INT(); |
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return; |
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} |
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// MEMORY CARD COMMANDS |
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switch (sio.mcdst) { |
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case 1: |
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sio.packetsize++; |
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SIO_INT(); |
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if (sio.rdwr) { sio.parp++; return; } |
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sio.parp = 1; |
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switch (value) { |
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case 0x11: // RESET |
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PAD_LOG("RESET MEMORY CARD"); |
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sio.bufcount = 8; |
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memset8<0xff>(sio.buf); |
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sio.buf[3] = sio.terminator; |
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sio.buf[2] = '+'; |
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sio.mcdst = 99; |
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sio2.packet.recvVal3 = 0x8c; |
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break; |
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case 0x12: // RESET |
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sio.bufcount = 8; |
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memset8<0xff>(sio.buf); |
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sio.buf[3] = sio.terminator; |
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sio.buf[2] = '+'; |
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sio.mcdst = 99; |
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sio2.packet.recvVal3 = 0x8c; |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
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break; |
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case 0x81: // COMMIT |
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sio.bufcount = 8; |
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memset8<0xff>(sio.buf); |
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sio.mcdst = 99; |
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sio.buf[3] = sio.terminator; |
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sio.buf[2] = '+'; |
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sio2.packet.recvVal3 = 0x8c; |
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if(value == 0x81) { |
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if(sio.mc_command==0x42) |
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sio2.packet.recvVal1 = 0x1600; // Writing |
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else if(sio.mc_command==0x43) sio2.packet.recvVal1 = 0x1700; // Reading |
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} |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
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break; |
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case 0x21: |
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case 0x22: |
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case 0x23: // SECTOR SET |
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sio.bufcount = 8; sio.mcdst = 99; sio.sector=0; sio.k=0; |
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memset8<0xff>(sio.buf); |
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sio2.packet.recvVal3 = 0x8c; |
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sio.buf[8]=sio.terminator; |
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sio.buf[7]='+'; |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
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break; |
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case 0x24: |
| 221 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 222 |
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break; |
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case 0x25: |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 225 |
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break; |
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| 227 |
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case 0x26: |
| 228 |
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{ |
| 229 |
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const uint port = sio.GetMemcardIndex(); |
| 230 |
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const uint slot = sio.activeMemcardSlot[port]; |
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| 232 |
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mc_command_0x26_tag cmd = mc_sizeinfo_8mb; |
| 233 |
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PS2E_McdSizeInfo info; |
| 234 |
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| 235 |
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info.SectorSize = cmd.sectorSize; |
| 236 |
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info.EraseBlockSizeInSectors = cmd.eraseBlocks; |
| 237 |
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info.McdSizeInSectors = cmd.mcdSizeInSectors; |
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| 239 |
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SysPlugins.McdGetSizeInfo( port, slot, info ); |
| 240 |
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pxAssumeDev( cmd.mcdSizeInSectors >= mc_sizeinfo_8mb.mcdSizeInSectors, |
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"Mcd plugin returned an invalid memorycard size: Cards smaller than 8MB are not supported." ); |
| 242 |
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| 243 |
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cmd.sectorSize = info.SectorSize; |
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cmd.eraseBlocks = info.EraseBlockSizeInSectors; |
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cmd.mcdSizeInSectors = info.McdSizeInSectors; |
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| 247 |
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// Recalculate the xor summation |
| 248 |
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// This uses a trick of removing the known xor values for a default 8mb memorycard (for which the XOR |
| 249 |
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// was calculated), and replacing it with our new values. |
| 250 |
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| 251 |
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apply_xor( cmd.mc_xor, mc_sizeinfo_8mb.sectorSize ); |
| 252 |
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apply_xor( cmd.mc_xor, mc_sizeinfo_8mb.eraseBlocks ); |
| 253 |
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apply_xor( cmd.mc_xor, mc_sizeinfo_8mb.mcdSizeInSectors ); |
| 254 |
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| 255 |
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apply_xor( cmd.mc_xor, cmd.sectorSize ); |
| 256 |
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apply_xor( cmd.mc_xor, cmd.eraseBlocks ); |
| 257 |
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apply_xor( cmd.mc_xor, cmd.mcdSizeInSectors ); |
| 258 |
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| 259 |
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sio.bufcount = 12; sio.mcdst = 99; sio2.packet.recvVal3 = 0x83; |
| 260 |
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memset8<0xff>(sio.buf); |
| 261 |
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memcpy_fast(&sio.buf[2], &cmd, sizeof(cmd)); |
| 262 |
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sio.buf[12]=sio.terminator; |
| 263 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 264 |
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} |
| 265 |
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break; |
| 266 |
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| 267 |
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case 0x27: |
| 268 |
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case 0x28: |
| 269 |
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case 0xBF: |
| 270 |
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sio.bufcount = 4; sio.mcdst = 99; sio2.packet.recvVal3 = 0x8b; |
| 271 |
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memset8<0xff>(sio.buf); |
| 272 |
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sio.buf[4]=sio.terminator; |
| 273 |
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sio.buf[3]='+'; |
| 274 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 275 |
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break; |
| 276 |
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case 0x42: // WRITE |
| 277 |
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case 0x43: // READ |
| 278 |
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case 0x82: |
| 279 |
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if(value==0x82 && sio.lastsector==sio.sector) sio.mode = 2; |
| 280 |
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if(value==0x42) sio.mode = 0; |
| 281 |
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if(value==0x43) sio.lastsector = sio.sector; // Reading |
| 282 |
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| 283 |
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sio.bufcount =133; sio.mcdst = 99; |
| 284 |
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memset8<0xff>(sio.buf); |
| 285 |
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sio.buf[133]=sio.terminator; |
| 286 |
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sio.buf[132]='+'; |
| 287 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 288 |
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break; |
| 289 |
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case 0xf0: |
| 290 |
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case 0xf1: |
| 291 |
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case 0xf2: |
| 292 |
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sio.mcdst = 99; |
| 293 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 294 |
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break; |
| 295 |
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case 0xf3: |
| 296 |
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case 0xf7: |
| 297 |
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sio.bufcount = 4; sio.mcdst = 99; |
| 298 |
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memset8<0xff>(sio.buf); |
| 299 |
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sio.buf[4]=sio.terminator; |
| 300 |
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sio.buf[3]='+'; |
| 301 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 302 |
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break; |
| 303 |
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case 0x52: |
| 304 |
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sio.rdwr = 1; memset8<0xff>(sio.buf); |
| 305 |
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sio.buf[sio.bufcount]=sio.terminator; sio.buf[sio.bufcount-1]='+'; |
| 306 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 307 |
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break; |
| 308 |
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case 0x57: |
| 309 |
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sio.rdwr = 2; memset8<0xff>(sio.buf); |
| 310 |
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sio.buf[sio.bufcount]=sio.terminator; sio.buf[sio.bufcount-1]='+'; |
| 311 |
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MEMCARDS_LOG("MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 312 |
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break; |
| 313 |
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default: |
| 314 |
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sio.mcdst = 0; |
| 315 |
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memset8<0xff>(sio.buf); |
| 316 |
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sio.buf[sio.bufcount]=sio.terminator; sio.buf[sio.bufcount-1]='+'; |
| 317 |
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MEMCARDS_LOG("Unknown MC(%d) command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 318 |
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} |
| 319 |
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sio.mc_command=value; |
| 320 |
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return; |
| 321 |
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// FURTHER PROCESSING OF THE MEMORY CARD COMMANDS |
| 322 |
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case 99: |
| 323 |
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sio.packetsize++; |
| 324 |
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sio.parp++; |
| 325 |
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switch(sio.mc_command) |
| 326 |
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{ |
| 327 |
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// SET_ERASE_PAGE; the next erase commands will *clear* data starting with the page set here |
| 328 |
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case 0x21: |
| 329 |
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// SET_WRITE_PAGE; the next write commands will commit data starting with the page set here |
| 330 |
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case 0x22: |
| 331 |
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// SET_READ_PAGE; the next read commands will return data starting with the page set here |
| 332 |
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case 0x23: |
| 333 |
|
|
if (sio.parp==2)sio.sector|=(value & 0xFF)<< 0; |
| 334 |
|
|
if (sio.parp==3)sio.sector|=(value & 0xFF)<< 8; |
| 335 |
|
|
if (sio.parp==4)sio.sector|=(value & 0xFF)<<16; |
| 336 |
|
|
if (sio.parp==5)sio.sector|=(value & 0xFF)<<24; |
| 337 |
|
|
if (sio.parp==6) |
| 338 |
|
|
{ |
| 339 |
|
|
if (sio_xor((u8 *)&sio.sector, 4) == value) |
| 340 |
|
|
MEMCARDS_LOG("MC(%d) SET PAGE sio.sector, sector=0x%04X", sio.GetMemcardIndex()+1, sio.sector); |
| 341 |
|
|
else |
| 342 |
|
|
MEMCARDS_LOG("MC(%d) SET PAGE XOR value ERROR 0x%02X != ^0x%02X", |
| 343 |
|
|
sio.GetMemcardIndex()+1, value, sio_xor((u8 *)&sio.sector, 4)); |
| 344 |
|
|
} |
| 345 |
|
|
break; |
| 346 |
|
|
|
| 347 |
|
|
// SET_TERMINATOR; reads the new terminator code |
| 348 |
|
|
case 0x27: |
| 349 |
|
|
if(sio.parp==2) { |
| 350 |
|
|
sio.terminator = value; |
| 351 |
|
|
sio.buf[4] = value; |
| 352 |
|
|
MEMCARDS_LOG("MC(%d) SET TERMINATOR command, value=0x%02X", sio.GetMemcardIndex()+1, value); |
| 353 |
|
|
|
| 354 |
|
|
} |
| 355 |
|
|
break; |
| 356 |
|
|
|
| 357 |
|
|
// GET_TERMINATOR; puts in position 3 the current terminator code and in 4 the default one |
| 358 |
|
|
// depending on the param |
| 359 |
|
|
case 0x28: |
| 360 |
|
|
if(sio.parp == 2) { |
| 361 |
|
|
sio.buf[2] = '+'; |
| 362 |
|
|
sio.buf[3] = sio.terminator; |
| 363 |
|
|
|
| 364 |
|
|
//if(value == 0) sio.buf[4] = 0xFF; |
| 365 |
|
|
sio.buf[4] = 0x55; |
| 366 |
|
|
MEMCARDS_LOG("MC(%d) GET TERMINATOR command, value=0x%02X", sio.GetMemcardIndex()+1, value); |
| 367 |
|
|
} |
| 368 |
|
|
break; |
| 369 |
|
|
// WRITE DATA |
| 370 |
|
|
case 0x42: |
| 371 |
|
|
if (sio.parp==2) { |
| 372 |
|
|
sio.bufcount=5+value; |
| 373 |
|
|
memset8<0xff>(sio.buf); |
| 374 |
|
|
sio.buf[sio.bufcount-1]='+'; |
| 375 |
|
|
sio.buf[sio.bufcount]=sio.terminator; |
| 376 |
|
|
MEMCARDS_LOG("MC(%d) WRITE command, size=0x%02X", sio.GetMemcardIndex()+1, value); |
| 377 |
|
|
} |
| 378 |
|
|
else |
| 379 |
|
|
if ((sio.parp>2) && (sio.parp<sio.bufcount-2)) { |
| 380 |
|
|
sio.buf[sio.parp]=value; |
| 381 |
|
|
//MEMCARDS_LOG("MC(%d) WRITING 0x%02X", sio.GetMemcardIndex()+1, value); |
| 382 |
|
|
} else |
| 383 |
|
|
if (sio.parp==sio.bufcount-2) { |
| 384 |
|
|
if (sio_xor(&sio.buf[3], sio.bufcount-5)==value) { |
| 385 |
|
|
_SaveMcd(&sio.buf[3], (512+16)*sio.sector+sio.k, sio.bufcount-5); |
| 386 |
|
|
sio.buf[sio.bufcount-1]=value; |
| 387 |
|
|
sio.k+=sio.bufcount-5; |
| 388 |
|
|
} else { |
| 389 |
|
|
MEMCARDS_LOG("MC(%d) write XOR value error 0x%02X != ^0x%02X", |
| 390 |
|
|
sio.GetMemcardIndex()+1, value, sio_xor(&sio.buf[3], sio.bufcount-5)); |
| 391 |
|
|
} |
| 392 |
|
|
} |
| 393 |
|
|
break; |
| 394 |
|
|
// READ DATA |
| 395 |
|
|
case 0x43: |
| 396 |
|
|
if (sio.parp==2) |
| 397 |
|
|
{ |
| 398 |
|
|
//int i; |
| 399 |
|
|
sio.bufcount=value+5; |
| 400 |
|
|
sio.buf[3]='+'; |
| 401 |
|
|
MEMCARDS_LOG("MC(%d) READ command, size=0x%02X", sio.GetMemcardIndex()+1, value); |
| 402 |
|
|
_ReadMcd(&sio.buf[4], (512+16)*sio.sector+sio.k, value); |
| 403 |
|
|
|
| 404 |
|
|
/*if(sio.mode==2) |
| 405 |
|
|
{ |
| 406 |
|
|
int j; |
| 407 |
|
|
for(j=0; j < value; j++) |
| 408 |
|
|
sio.buf[4+j] = ~sio.buf[4+j]; |
| 409 |
|
|
}*/ |
| 410 |
|
|
|
| 411 |
|
|
sio.k+=value; |
| 412 |
|
|
sio.buf[sio.bufcount-1]=sio_xor(&sio.buf[4], value); |
| 413 |
|
|
sio.buf[sio.bufcount]=sio.terminator; |
| 414 |
|
|
} |
| 415 |
|
|
break; |
| 416 |
|
|
// INTERNAL ERASE |
| 417 |
|
|
case 0x82: |
| 418 |
|
|
if(sio.parp==2) |
| 419 |
|
|
{ |
| 420 |
|
|
sio.buf[2]='+'; |
| 421 |
|
|
sio.buf[3]=sio.terminator; |
| 422 |
|
|
//if (sio.k != 0 || (sio.sector & 0xf) != 0) |
| 423 |
|
|
// Console.Warning("saving : odd position for erase."); |
| 424 |
|
|
|
| 425 |
|
|
_EraseMCDBlock((512+16)*(sio.sector&~0xf)); |
| 426 |
|
|
|
| 427 |
|
|
/* memset(sio.buf, -1, 256); |
| 428 |
|
|
_SaveMcd(sio.buf, (512+16)*sio.sector, 256); |
| 429 |
|
|
_SaveMcd(sio.buf, (512+16)*sio.sector+256, 256); |
| 430 |
|
|
_SaveMcd(sio.buf, (512+16)*sio.sector+512, 16); |
| 431 |
|
|
sio.buf[2]='+'; |
| 432 |
|
|
sio.buf[3]=sio.terminator;*/ |
| 433 |
|
|
//sio.buf[sio.bufcount] = sio.terminator; |
| 434 |
|
|
MEMCARDS_LOG("MC(%d) INTERNAL ERASE command 0x%02X", sio.GetMemcardIndex()+1, value); |
| 435 |
|
|
} |
| 436 |
|
|
break; |
| 437 |
|
|
// CARD AUTHENTICATION CHECKS |
| 438 |
|
|
case 0xF0: |
| 439 |
|
|
if (sio.parp==2) |
| 440 |
|
|
{ |
| 441 |
|
|
MEMCARDS_LOG("MC(%d) CARD AUTH :0x%02X", sio.GetMemcardIndex()+1, value); |
| 442 |
|
|
switch(value){ |
| 443 |
|
|
case 1: |
| 444 |
|
|
case 2: |
| 445 |
|
|
case 4: |
| 446 |
|
|
case 15: |
| 447 |
|
|
case 17: |
| 448 |
|
|
case 19: |
| 449 |
|
|
sio.bufcount=13; |
| 450 |
|
|
memset8<0xff>(sio.buf); |
| 451 |
|
|
sio.buf[12] = 0; // Xor value of data from index 4 to 11 |
| 452 |
|
|
sio.buf[3]='+'; |
| 453 |
|
|
sio.buf[13] = sio.terminator; |
| 454 |
|
|
break; |
| 455 |
|
|
case 6: |
| 456 |
|
|
case 7: |
| 457 |
|
|
case 11: |
| 458 |
|
|
sio.bufcount=13; |
| 459 |
|
|
memset8<0xff>(sio.buf); |
| 460 |
|
|
sio.buf[12]='+'; |
| 461 |
|
|
sio.buf[13] = sio.terminator; |
| 462 |
|
|
break; |
| 463 |
|
|
default: |
| 464 |
|
|
sio.bufcount=4; |
| 465 |
|
|
memset8<0xff>(sio.buf); |
| 466 |
|
|
sio.buf[3]='+'; |
| 467 |
|
|
sio.buf[4] = sio.terminator; |
| 468 |
|
|
} |
| 469 |
|
|
} |
| 470 |
|
|
break; |
| 471 |
|
|
} |
| 472 |
|
|
if (sio.bufcount<=sio.parp) sio.mcdst = 0; |
| 473 |
|
|
return; |
| 474 |
|
|
} |
| 475 |
|
|
|
| 476 |
|
|
switch (sio.mtapst) |
| 477 |
|
|
{ |
| 478 |
|
|
case 0x1: |
| 479 |
|
|
sio.packetsize++; |
| 480 |
|
|
sio.parp = 1; |
| 481 |
|
|
SIO_INT(); |
| 482 |
|
|
switch(value) { |
| 483 |
|
|
case 0x12: |
| 484 |
|
|
// Query number of pads supported. |
| 485 |
|
|
sio.buf[3] = 4; |
| 486 |
|
|
sio.mtapst = 2; |
| 487 |
|
|
sio.bufcount = 5; |
| 488 |
|
|
break; |
| 489 |
|
|
case 0x13: |
| 490 |
|
|
// Query number of memcards supported. |
| 491 |
|
|
sio.buf[3] = 4; |
| 492 |
|
|
sio.mtapst = 2; |
| 493 |
|
|
sio.bufcount = 5; |
| 494 |
|
|
break; |
| 495 |
|
|
case 0x21: |
| 496 |
|
|
// Set pad slot. |
| 497 |
|
|
sio.mtapst = value; |
| 498 |
|
|
sio.bufcount = 6; // No idea why this is 6, saved from old code. |
| 499 |
|
|
break; |
| 500 |
|
|
case 0x22: |
| 501 |
|
|
// Set memcard slot. |
| 502 |
|
|
sio.mtapst = value; |
| 503 |
|
|
sio.bufcount = 6; // No idea why this is 6, saved from old code. |
| 504 |
|
|
break; |
| 505 |
|
|
} |
| 506 |
|
|
// Commented out values are from original code. They break multitap in bios. |
| 507 |
|
|
sio.buf[sio.bufcount-1]=0;//'+'; |
| 508 |
|
|
sio.buf[sio.bufcount]=0;//'Z'; |
| 509 |
|
|
return; |
| 510 |
|
|
case 0x2: |
| 511 |
|
|
sio.packetsize++; |
| 512 |
|
|
sio.parp++; |
| 513 |
|
|
if (sio.bufcount<=sio.parp) sio.mcdst = 0; |
| 514 |
|
|
SIO_INT(); |
| 515 |
|
|
return; |
| 516 |
|
|
case 0x21: |
| 517 |
|
|
// Set pad slot. |
| 518 |
|
|
sio.packetsize++; |
| 519 |
|
|
sio.parp++; |
| 520 |
|
|
sio.mtapst = 2; |
| 521 |
|
|
if (sio.CtrlReg & 2) |
| 522 |
|
|
{ |
| 523 |
|
|
int port = sio.GetMultitapPort(); |
| 524 |
|
|
if (IsMtapPresent(port)) |
| 525 |
|
|
sio.activePadSlot[port] = value; |
| 526 |
|
|
} |
| 527 |
|
|
SIO_INT(); |
| 528 |
|
|
return; |
| 529 |
|
|
case 0x22: |
| 530 |
|
|
// Set memcard slot. |
| 531 |
|
|
sio.packetsize++; |
| 532 |
|
|
sio.parp++; |
| 533 |
|
|
sio.mtapst = 2; |
| 534 |
|
|
if (sio.CtrlReg & 2) |
| 535 |
|
|
{ |
| 536 |
|
|
int port = sio.GetMultitapPort(); |
| 537 |
|
|
if (IsMtapPresent(port)) |
| 538 |
|
|
sio.activeMemcardSlot[port] = value; |
| 539 |
|
|
} |
| 540 |
|
|
SIO_INT(); |
| 541 |
|
|
return; |
| 542 |
|
|
} |
| 543 |
|
|
|
| 544 |
|
|
if(sio.count == 1 || way == 0) InitializeSIO(value); |
| 545 |
|
|
} |
| 546 |
|
|
|
| 547 |
|
|
void InitializeSIO(u8 value) |
| 548 |
|
|
{ |
| 549 |
|
|
switch (value) { |
| 550 |
|
|
case 0x01: // start pad |
| 551 |
|
|
sio.StatReg &= ~TX_EMPTY; // Now the Buffer is not empty |
| 552 |
|
|
sio.StatReg |= RX_RDY; // Transfer is Ready |
| 553 |
|
|
|
| 554 |
|
|
sio.bufcount = 4; // Default size, when no pad connected. |
| 555 |
|
|
sio.parp = 0; |
| 556 |
|
|
sio.padst = 1; |
| 557 |
|
|
sio.packetsize = 1; |
| 558 |
|
|
sio.count = 0; |
| 559 |
|
|
sio2.packet.recvVal1 = 0x1100; // Pad is present |
| 560 |
|
|
|
| 561 |
|
|
if( (sio.CtrlReg & 2) == 2 ) |
| 562 |
|
|
{ |
| 563 |
|
|
int padslot = (sio.CtrlReg>>12) & 2; // move 0x2000 bitmask into leftmost bits |
| 564 |
|
|
if( padslot != 1 ) |
| 565 |
|
|
{ |
| 566 |
|
|
padslot >>= 1; // transform 0/2 to be 0/1 values |
| 567 |
|
|
|
| 568 |
|
|
if (!PADsetSlot(padslot+1, 1+sio.activePadSlot[padslot]) && sio.activePadSlot[padslot]) |
| 569 |
|
|
{ |
| 570 |
|
|
// Pad is not present. Don't send poll, just return a bunch of 0's. |
| 571 |
|
|
sio2.packet.recvVal1 = 0x1D100; |
| 572 |
|
|
sio.padst = 3; |
| 573 |
|
|
} |
| 574 |
|
|
else { |
| 575 |
|
|
sio.buf[0] = PADstartPoll(padslot+1); |
| 576 |
|
|
} |
| 577 |
|
|
} |
| 578 |
|
|
} |
| 579 |
|
|
|
| 580 |
|
|
SIO_INT(); |
| 581 |
|
|
return; |
| 582 |
|
|
|
| 583 |
|
|
case 0x21: // start mtap |
| 584 |
|
|
sio.StatReg &= ~TX_EMPTY; // Now the Buffer is not empty |
| 585 |
|
|
sio.StatReg |= RX_RDY; // Transfer is Ready |
| 586 |
|
|
sio.parp = 0; |
| 587 |
|
|
sio.packetsize = 1; |
| 588 |
|
|
sio.mtapst = 1; |
| 589 |
|
|
sio.count = 0; |
| 590 |
|
|
sio2.packet.recvVal1 = 0x1D100; // Mtap is not connected :( |
| 591 |
|
|
if (sio.CtrlReg & 2) // No idea if this test is needed. Pads use it, memcards don't. |
| 592 |
|
|
{ |
| 593 |
|
|
int port = sio.GetMultitapPort(); |
| 594 |
|
|
if (!IsMtapPresent(port)) |
| 595 |
|
|
{ |
| 596 |
|
|
// If "unplug" multitap mid game, set active slots to 0. |
| 597 |
|
|
sio.activePadSlot[port] = 0; |
| 598 |
|
|
sio.activeMemcardSlot[port] = 0; |
| 599 |
|
|
} |
| 600 |
|
|
else |
| 601 |
|
|
{ |
| 602 |
|
|
sio.bufcount = 3; |
| 603 |
|
|
sio.buf[0] = 0xFF; |
| 604 |
|
|
sio.buf[1] = 0x80; // Have no idea if this is correct. From PSX mtap. |
| 605 |
|
|
sio.buf[2] = 0x5A; |
| 606 |
|
|
sio2.packet.recvVal1 = 0x1100; // Mtap is connected :) |
| 607 |
|
|
} |
| 608 |
|
|
} |
| 609 |
|
|
SIO_INT(); |
| 610 |
|
|
return; |
| 611 |
|
|
|
| 612 |
|
|
case 0x61: // start remote control sensor |
| 613 |
|
|
sio.StatReg &= ~TX_EMPTY; // Now the Buffer is not empty |
| 614 |
|
|
sio.StatReg |= RX_RDY; // Transfer is Ready |
| 615 |
|
|
sio.parp = 0; |
| 616 |
|
|
sio.packetsize = 1; |
| 617 |
|
|
sio.count = 0; |
| 618 |
|
|
sio2.packet.recvVal1 = 0x1100; // Pad is present |
| 619 |
|
|
SIO_INT(); |
| 620 |
|
|
return; |
| 621 |
|
|
|
| 622 |
|
|
case 0x81: // start memcard |
| 623 |
|
|
{ |
| 624 |
|
|
sio.StatReg &= ~TX_EMPTY; |
| 625 |
|
|
sio.StatReg |= RX_RDY; |
| 626 |
|
|
memcpy(sio.buf, cardh, 4); |
| 627 |
|
|
sio.parp = 0; |
| 628 |
|
|
sio.bufcount = 8; |
| 629 |
|
|
sio.mcdst = 1; |
| 630 |
|
|
sio.packetsize = 1; |
| 631 |
|
|
sio.rdwr = 0; |
| 632 |
|
|
sio.count = 0; |
| 633 |
|
|
|
| 634 |
|
|
// Memcard presence reporting! |
| 635 |
|
|
// Note: |
| 636 |
|
|
// 0x01100 means Memcard is present |
| 637 |
|
|
// 0x1D100 means Memcard is missing. |
| 638 |
|
|
|
| 639 |
|
|
const uint port = sio.GetMemcardIndex(); |
| 640 |
|
|
const uint slot = sio.activeMemcardSlot[port]; |
| 641 |
|
|
|
| 642 |
|
|
// forced ejection logic. Technically belongs in the McdIsPresent handler for |
| 643 |
|
|
// the plugin, once the memorycard plugin system is completed. |
| 644 |
|
|
// (ejection is only supported for the default non-multitap cards at this time) |
| 645 |
|
|
|
| 646 |
|
|
bool forceEject = false; |
| 647 |
|
|
if( slot == 0 && m_ForceEjectionTimeout[port] ) |
| 648 |
|
|
{ |
| 649 |
|
|
--m_ForceEjectionTimeout[port]; |
| 650 |
|
|
forceEject = true; |
| 651 |
|
|
} |
| 652 |
|
|
|
| 653 |
|
|
if( !forceEject && SysPlugins.McdIsPresent( port, slot ) ) |
| 654 |
|
|
{ |
| 655 |
|
|
sio2.packet.recvVal1 = 0x1100; |
| 656 |
|
|
PAD_LOG("START MEMCARD [port:%d, slot:%d] - Present", port, slot ); |
| 657 |
|
|
} |
| 658 |
|
|
else |
| 659 |
|
|
{ |
| 660 |
|
|
sio2.packet.recvVal1 = 0x1D100; |
| 661 |
|
|
PAD_LOG("START MEMCARD [port:%d, slot:%d] - Missing", port, slot ); |
| 662 |
|
|
} |
| 663 |
|
|
|
| 664 |
|
|
SIO_INT(); |
| 665 |
|
|
} |
| 666 |
|
|
return; |
| 667 |
|
|
} |
| 668 |
|
|
} |
| 669 |
|
|
|
| 670 |
|
|
void sioWrite8(u8 value) |
| 671 |
|
|
{ |
| 672 |
|
|
SIO_CommandWrite(value,0); |
| 673 |
|
|
} |
| 674 |
|
|
|
| 675 |
|
|
void SIODMAWrite(u8 value) |
| 676 |
|
|
{ |
| 677 |
|
|
SIO_CommandWrite(value,1); |
| 678 |
|
|
} |
| 679 |
|
|
|
| 680 |
|
|
void sioWriteCtrl16(u16 value) { |
| 681 |
|
|
sio.CtrlReg = value & ~RESET_ERR; |
| 682 |
|
|
if (value & RESET_ERR) sio.StatReg &= ~IRQ; |
| 683 |
|
|
if ((sio.CtrlReg & SIO_RESET) || (!sio.CtrlReg)) |
| 684 |
|
|
{ |
| 685 |
|
|
sio.mtapst = 0; sio.padst = 0; sio.mcdst = 0; sio.parp = 0; |
| 686 |
|
|
sio.StatReg = TX_RDY | TX_EMPTY; |
| 687 |
|
|
psxRegs.interrupt &= ~(1<<IopEvt_SIO); |
| 688 |
|
|
} |
| 689 |
|
|
} |
| 690 |
|
|
|
| 691 |
|
|
void SIO_FORCEINLINE sioInterrupt() { |
| 692 |
|
|
PAD_LOG("Sio Interrupt"); |
| 693 |
|
|
sio.StatReg|= IRQ; |
| 694 |
|
|
psxHu32(0x1070)|=0x80; |
| 695 |
|
|
} |
| 696 |
|
|
|
| 697 |
|
|
void SaveStateBase::sioFreeze() |
| 698 |
|
|
{ |
| 699 |
|
|
// CRCs for memory cards. |
| 700 |
|
|
u64 m_mcdCRCs[2][8]; |
| 701 |
|
|
|
| 702 |
|
|
FreezeTag( "sio" ); |
| 703 |
|
|
Freeze( sio ); |
| 704 |
|
|
|
| 705 |
|
|
// TODO : This stuff should all be moved to the memorycard plugin eventually, |
| 706 |
|
|
// but that requires adding memorycard plugin to the savestate, and I'm not in |
| 707 |
|
|
// the mood to do that (let's plan it for 0.9.8) --air |
| 708 |
|
|
|
| 709 |
|
|
// Note: The Ejection system only works for the default non-multitap MemoryCards |
| 710 |
|
|
// only. This is because it could become very (very!) slow to do a full CRC check |
| 711 |
|
|
// on multiple 32 or 64 meg carts. I have chosen to save |
| 712 |
|
|
|
| 713 |
|
|
if( IsSaving() ) |
| 714 |
|
|
{ |
| 715 |
|
|
for( uint port=0; port<2; ++port ) |
| 716 |
|
|
//for( uint slot=0; slot<4; ++slot ) |
| 717 |
|
|
{ |
| 718 |
|
|
const uint slot = 0; // see above comment about multitap slowness |
| 719 |
|
|
m_mcdCRCs[port][slot] = SysPlugins.McdGetCRC( port, slot ); |
| 720 |
|
|
} |
| 721 |
|
|
} |
| 722 |
|
|
|
| 723 |
|
|
Freeze( m_mcdCRCs ); |
| 724 |
|
|
|
| 725 |
|
|
if( IsLoading() && EmuConfig.McdEnableEjection ) |
| 726 |
|
|
{ |
| 727 |
|
|
// Notes on the ForceEjectionTimeout: |
| 728 |
|
|
// * TOTA works with values as low as 20 here. |
| 729 |
|
|
// It "times out" with values around 1800 (forces user to check the memcard |
| 730 |
|
|
// twice to find it). Other games could be different. :| |
| 731 |
|
|
// |
| 732 |
|
|
// * At 64: Disgaea 1 and 2, and Grandia 2 end up displaying a quick "no memcard!" |
| 733 |
|
|
// notice before finding the memorycard and re-enumerating it. A very minor |
| 734 |
|
|
// annoyance, but no breakages. |
| 735 |
|
|
|
| 736 |
|
|
// * GuitarHero will break completely with almost any value here, by design, because |
| 737 |
|
|
// it has a "rule" that the memcard should never be ejected during a song. So by |
| 738 |
|
|
// ejecting it, the game freezes (which is actually good emulation, but annoying!) |
| 739 |
|
|
|
| 740 |
|
|
for( uint port=0; port<2; ++port ) |
| 741 |
|
|
//for( int slot=0; slot<4; ++slot ) |
| 742 |
|
|
{ |
| 743 |
|
|
const uint slot = 0; // see above comment about multitap slowness |
| 744 |
|
|
u64 newCRC = SysPlugins.McdGetCRC( port, slot ); |
| 745 |
|
|
if( newCRC != m_mcdCRCs[port][slot] ) |
| 746 |
|
|
{ |
| 747 |
|
|
//m_mcdCRCs[port][slot] = newCRC; |
| 748 |
|
|
m_ForceEjectionTimeout[port] = 128; |
| 749 |
|
|
} |
| 750 |
|
|
} |
| 751 |
|
|
} |
| 752 |
|
|
} |
| 753 |
|
|
|
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