From d59c856fbf576daa91fa4a8bade38d97b4edbbe4 Mon Sep 17 00:00:00 2001 From: João Silva Date: Sat, 14 Jan 2017 21:09:57 +0000 Subject: Moved copyright information to copyright file. --- source/fxemu.c | 90 +--------------------------------------------------------- 1 file changed, 1 insertion(+), 89 deletions(-) (limited to 'source/fxemu.c') diff --git a/source/fxemu.c b/source/fxemu.c index ecef971..ffb82be 100644 --- a/source/fxemu.c +++ b/source/fxemu.c @@ -1,93 +1,5 @@ -/******************************************************************************* - Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. +#include "../copyright" - (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and - Jerremy Koot (jkoot@snes9x.com) - - (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net) - - (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net), - funkyass (funkyass@spam.shaw.ca), - Joel Yliluoma (http://iki.fi/bisqwit/) - Kris Bleakley (codeviolation@hotmail.com), - Matthew Kendora, - Nach (n-a-c-h@users.sourceforge.net), - Peter Bortas (peter@bortas.org) and - zones (kasumitokoduck@yahoo.com) - - C4 x86 assembler and some C emulation code - (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com), - _Demo_ (_demo_@zsnes.com), and Nach - - C4 C++ code - (c) Copyright 2003 Brad Jorsch - - DSP-1 emulator code - (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson, - John Weidman, neviksti (neviksti@hotmail.com), - Kris Bleakley, Andreas Naive - - DSP-2 emulator code - (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and - Lord Nightmare (lord_nightmare@users.sourceforge.net - - OBC1 emulator code - (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and - Kris Bleakley - Ported from x86 assembler to C by sanmaiwashi - - SPC7110 and RTC C++ emulator code - (c) Copyright 2002 Matthew Kendora with research by - zsKnight, John Weidman, and Dark Force - - S-DD1 C emulator code - (c) Copyright 2003 Brad Jorsch with research by - Andreas Naive and John Weidman - - S-RTC C emulator code - (c) Copyright 2001 John Weidman - - ST010 C++ emulator code - (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora - - Super FX x86 assembler emulator code - (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault - - Super FX C emulator code - (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman - - - SH assembler code partly based on x86 assembler code - (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) - - (c) Copyright 2014 - 2016 Daniel De Matteis. (UNDER NO CIRCUMSTANCE - WILL COMMERCIAL RIGHTS EVER BE APPROPRIATED TO ANY PARTY) - - Specific ports contains the works of other authors. See headers in - individual files. - - Snes9x homepage: http://www.snes9x.com - - Permission to use, copy, modify and distribute Snes9x in both binary and - source form, for non-commercial purposes, is hereby granted without fee, - providing that this license information and copyright notice appear with - all copies and any derived work. - - This software is provided 'as-is', without any express or implied - warranty. In no event shall the authors be held liable for any damages - arising from the use of this software. - - Snes9x is freeware for PERSONAL USE only. Commercial users should - seek permission of the copyright holders first. Commercial use includes - charging money for Snes9x or software derived from Snes9x. - - The copyright holders request that bug fixes and improvements to the code - should be forwarded to them so everyone can benefit from the modifications - in future versions. - - Super NES and Super Nintendo Entertainment System are trademarks of - Nintendo Co., Limited and its subsidiary companies. -*******************************************************************************/ #include "fxemu.h" #include "fxinst.h" #include -- cgit v1.2.3 From 3b8323853f4eeddb61398e77c51bb2349f430227 Mon Sep 17 00:00:00 2001 From: João Silva Date: Sat, 14 Jan 2017 23:08:50 +0000 Subject: Removed a LOT of useless stuff. --- source/fxemu.c | 181 +++------------------------------------------------------ 1 file changed, 7 insertions(+), 174 deletions(-) (limited to 'source/fxemu.c') diff --git a/source/fxemu.c b/source/fxemu.c index ffb82be..c16ee58 100644 --- a/source/fxemu.c +++ b/source/fxemu.c @@ -13,133 +13,21 @@ uint32_t(**fx_ppfFunctionTable)(uint32_t) = 0; void (**fx_ppfPlotTable)() = 0; void (**fx_ppfOpcodeTable)() = 0; -#if 0 -void fx_setCache() -{ - uint32_t c; - GSU.bCacheActive = true; - GSU.pvRegisters[0x3e] &= 0xf0; - c = (uint32_t)GSU.pvRegisters[0x3e]; - c |= ((uint32_t)GSU.pvRegisters[0x3f]) << 8; - if (c == GSU.vCacheBaseReg) - return; - GSU.vCacheBaseReg = c; - GSU.vCacheFlags = 0; - if (c < (0x10000 - 512)) - { - uint8_t const* t = &ROM(c); - memcpy(GSU.pvCache, t, 512); - } - else - { - uint8_t const* t1; - uint8_t const* t2; - uint32_t i = 0x10000 - c; - t1 = &ROM(c); - t2 = &ROM(0); - memcpy(GSU.pvCache, t1, i); - memcpy(&GSU.pvCache[i], t2, 512 - i); - } -} -#endif - void FxCacheWriteAccess(uint16_t vAddress) { -#if 0 - if (!GSU.bCacheActive) - { - uint8_t v = GSU.pvCache[GSU.pvCache[vAddress & 0x1ff]; - fx_setCache(); - GSU.pvCache[GSU.pvCache[vAddress & 0x1ff] = v; - } -#endif - if ((vAddress & 0x00f) == 0x00f) - GSU.vCacheFlags |= 1 << ((vAddress & 0x1f0) >> 4); + if ((vAddress & 0x00f) == 0x00f) + GSU.vCacheFlags |= 1 << ((vAddress & 0x1f0) >> 4); } - void FxFlushCache() +void FxFlushCache() { GSU.vCacheFlags = 0; GSU.vCacheBaseReg = 0; GSU.bCacheActive = false; - // GSU.vPipe = 0x1; -} - -static void fx_backupCache() -{ -#if 0 - uint32_t i; - uint32_t v = GSU.vCacheFlags; - uint32_t c = USEX16(GSU.vCacheBaseReg); - if (v) - for (i = 0; i < 32; i++) - { - if (v & 1) - { - if (c < (0x10000 - 16)) - { - uint8_t* t = &GSU.pvPrgBank[c]; - memcpy(&GSU.avCacheBackup[i << 4], t, 16); - memcpy(t, &GSU.pvCache[i << 4], 16); - } - else - { - uint8_t* t1; - uint8_t* t2; - uint32_t a = 0x10000 - c; - t1 = &GSU.pvPrgBank[c]; - t2 = &GSU.pvPrgBank[0]; - memcpy(&GSU.avCacheBackup[i << 4], t1, a); - memcpy(t1, &GSU.pvCache[i << 4], a); - memcpy(&GSU.avCacheBackup[(i << 4) + a], t2, 16 - a); - memcpy(t2, &GSU.pvCache[(i << 4) + a], 16 - a); - } - } - c = USEX16(c + 16); - v >>= 1; - } -#endif -} - -static void fx_restoreCache() -{ -#if 0 - uint32_t i; - uint32_t v = GSU.vCacheFlags; - uint32_t c = USEX16(GSU.vCacheBaseReg); - if (v) - for (i = 0; i < 32; i++) - { - if (v & 1) - { - if (c < (0x10000 - 16)) - { - uint8_t* t = &GSU.pvPrgBank[c]; - memcpy(t, &GSU.avCacheBackup[i << 4], 16); - memcpy(&GSU.pvCache[i << 4], t, 16); - } - else - { - uint8_t* t1; - uint8_t* t2; - uint32_t a = 0x10000 - c; - t1 = &GSU.pvPrgBank[c]; - t2 = &GSU.pvPrgBank[0]; - memcpy(t1, &GSU.avCacheBackup[i << 4], a); - memcpy(&GSU.pvCache[i << 4], t1, a); - memcpy(t2, &GSU.avCacheBackup[(i << 4) + a], 16 - a); - memcpy(&GSU.pvCache[(i << 4) + a], t2, 16 - a); - } - } - c = USEX16(c + 16); - v >>= 1; - } -#endif } void fx_flushCache() { - fx_restoreCache(); GSU.vCacheFlags = 0; GSU.bCacheActive = false; } @@ -197,10 +85,6 @@ static void fx_readRegisterSpace() i |= ((int)(!!(p[GSU_SCMR] & 0x20))) << 1; GSU.vScreenHeight = GSU.vScreenRealHeight = avHeight[i]; GSU.vMode = p[GSU_SCMR] & 0x03; -#if 0 - if (GSU.vMode == 2) - error illegal color depth GSU.vMode; -#endif if (i == 3) GSU.vScreenSize = (256 / 8) * (256 / 8) * 32; else @@ -210,14 +94,9 @@ static void fx_readRegisterSpace() /* OBJ Mode (for drawing into sprites) */ GSU.vScreenHeight = 256; } -#if 0 - if (GSU.pvScreenBase + GSU.vScreenSize > GSU.pvRam + (GSU.nRamBanks * 65536)) - error illegal address for screen base register -#else if (GSU.pvScreenBase + GSU.vScreenSize > GSU.pvRam + (GSU.nRamBanks * 65536)) GSU.pvScreenBase = GSU.pvRam + (GSU.nRamBanks * 65536) - GSU.vScreenSize; -#endif - GSU.pfPlot = fx_apfPlotTable[GSU.vMode]; + GSU.pfPlot = fx_apfPlotTable[GSU.vMode]; GSU.pfRpix = fx_apfPlotTable[GSU.vMode + 5]; fx_ppfOpcodeTable[0x04c] = GSU.pfPlot; @@ -226,8 +105,6 @@ static void fx_readRegisterSpace() fx_ppfOpcodeTable[0x34c] = GSU.pfRpix; fx_computeScreenPointers(); - - fx_backupCache(); } void fx_dirtySCBR() @@ -395,8 +272,6 @@ static void fx_writeRegisterSpace() p[GSU_RAMBR] = (uint8_t)GSU.vRamBankReg; p[GSU_CBR] = (uint8_t)GSU.vCacheBaseReg; p[GSU_CBR + 1] = (uint8_t)(GSU.vCacheBaseReg >> 8); - - fx_restoreCache(); } /* Reset the FxChip */ @@ -405,30 +280,15 @@ void FxReset(struct FxInit_s* psFxInfo) int i; static uint32_t(**appfFunction[])(uint32_t) = { - &fx_apfFunctionTable[0], -#if 0 - &fx_a_apfFunctionTable[0], - &fx_r_apfFunctionTable[0], - &fx_ar_apfFunctionTable[0], -#endif + &fx_apfFunctionTable[0] }; static void (**appfPlot[])() = { - &fx_apfPlotTable[0], -#if 0 - &fx_a_apfPlotTable[0], - &fx_r_apfPlotTable[0], - &fx_ar_apfPlotTable[0], -#endif + &fx_apfPlotTable[0] }; static void (**appfOpcode[])() = { - &fx_apfOpcodeTable[0], -#if 0 - &fx_a_apfOpcodeTable[0], - &fx_r_apfOpcodeTable[0], - &fx_ar_apfOpcodeTable[0], -#endif + &fx_apfOpcodeTable[0] }; /* Get function pointers for the current emulation mode */ @@ -536,22 +396,12 @@ int FxEmulate(uint32_t nInstructions) { CF(G); fx_writeRegisterSpace(); -#if 0 - GSU.vIllegalAddress = (GSU.vPrgBankReg << 24) | R15; - return FX_ERROR_ILLEGAL_ADDRESS; -#else return 0; -#endif } /* Execute GSU session */ CF(IRQ); - /* - if (GSU.bBreakPoint) - vCount = fx_ppfFunctionTable[FX_FUNCTION_RUN_TO_BREAKPOINT](nInstructions); - else - */ vCount = fx_ppfFunctionTable[FX_FUNCTION_RUN](nInstructions); /* Store GSU registers */ @@ -564,18 +414,6 @@ int FxEmulate(uint32_t nInstructions) return vCount; } -/* Breakpoints */ -/* -void FxBreakPointSet(uint32_t vAddress) -{ - GSU.bBreakPoint = true; - GSU.vBreakPoint = USEX16(vAddress); -} -void FxBreakPointClear() -{ - GSU.bBreakPoint = false; -}*/ - /* Step by step execution */ int FxStepOver(uint32_t nInstructions) { @@ -586,12 +424,7 @@ int FxStepOver(uint32_t nInstructions) if (!fx_checkStartAddress()) { CF(G); -#if 0 - GSU.vIllegalAddress = (GSU.vPrgBankReg << 24) | R15; - return FX_ERROR_ILLEGAL_ADDRESS; -#else return 0; -#endif } if (PIPE >= 0xf0) -- cgit v1.2.3