diff options
Diffstat (limited to 'source/sa1.c')
-rw-r--r-- | source/sa1.c | 204 |
1 files changed, 3 insertions, 201 deletions
diff --git a/source/sa1.c b/source/sa1.c index 5a95862..18540fb 100644 --- a/source/sa1.c +++ b/source/sa1.c @@ -1,93 +1,4 @@ -/******************************************************************************* - Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. - - (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 "../copyright" #include "snes9x.h" #include "ppu.h" @@ -351,20 +262,6 @@ void S9xSA1SetPCBase(uint32_t address) } } -void S9xSA1ExecuteDuringSleep() -{ -#if 0 - if (SA1.Executing) - { - while (CPU.Cycles < CPU.NextEvent) - { - S9xSA1MainLoop(); - CPU.Cycles += TWO_CYCLES * 2; - } - } -#endif -} - void S9xSetSA1MemMap(uint32_t which1, uint8_t map) { int c; @@ -395,7 +292,6 @@ void S9xSetSA1MemMap(uint32_t which1, uint8_t map) uint8_t S9xGetSA1(uint32_t address) { - // printf ("R: %04x\n", address); switch (address) { case 0x2300: @@ -433,12 +329,10 @@ uint8_t S9xGetSA1(uint32_t address) void S9xSetSA1(uint8_t byte, uint32_t address) { - //printf ("W: %02x -> %04x\n", byte, address); switch (address) { case 0x2200: SA1.Waiting = (byte & 0x60) != 0; - // SA1.Executing = !SA1.Waiting && SA1.S9xOpcodes; if (!(byte & 0x20) && (Memory.FillRAM [0x2200] & 0x20)) S9xSA1Reset(); @@ -455,9 +349,6 @@ void S9xSetSA1(uint8_t byte, uint32_t address) if (byte & 0x10) { Memory.FillRAM [0x2301] |= 0x10; - if (Memory.FillRAM [0x220a] & 0x10) - { - } } break; @@ -481,25 +372,13 @@ void S9xSetSA1(uint8_t byte, uint32_t address) S9xClearIRQ(SA1_DMA_IRQ_SOURCE); } break; + case 0x2203: - // printf ("SA1 reset vector: %04x\n", byte | (Memory.FillRAM [0x2204] << 8)); - break; case 0x2204: - // printf ("SA1 reset vector: %04x\n", (byte << 8) | Memory.FillRAM [0x2203]); - break; - case 0x2205: - // printf ("SA1 NMI vector: %04x\n", byte | (Memory.FillRAM [0x2206] << 8)); - break; case 0x2206: - // printf ("SA1 NMI vector: %04x\n", (byte << 8) | Memory.FillRAM [0x2205]); - break; - case 0x2207: - // printf ("SA1 IRQ vector: %04x\n", byte | (Memory.FillRAM [0x2208] << 8)); - break; case 0x2208: - // printf ("SA1 IRQ vector: %04x\n", (byte << 8) | Memory.FillRAM [0x2207]); break; case 0x2209: @@ -516,28 +395,18 @@ void S9xSetSA1(uint8_t byte, uint32_t address) { SA1.Flags |= IRQ_PENDING_FLAG; SA1.IRQActive |= SNES_IRQ_SOURCE; - // SA1.Executing = !SA1.Waiting; } if (((byte ^ Memory.FillRAM [0x220a]) & 0x40) && (Memory.FillRAM [0x2301] & byte & 0x40)) { SA1.Flags |= IRQ_PENDING_FLAG; SA1.IRQActive |= TIMER_IRQ_SOURCE; - // SA1.Executing = !SA1.Waiting; } if (((byte ^ Memory.FillRAM [0x220a]) & 0x20) && (Memory.FillRAM [0x2301] & byte & 0x20)) { SA1.Flags |= IRQ_PENDING_FLAG; SA1.IRQActive |= DMA_IRQ_SOURCE; - // SA1.Executing = !SA1.Waiting; - } - if (((byte ^ Memory.FillRAM [0x220a]) & 0x10) && - (Memory.FillRAM [0x2301] & byte & 0x10)) - { -#if 0 - printf("###SA1 NMI\n"); -#endif } break; case 0x220b: @@ -565,26 +434,12 @@ void S9xSetSA1(uint8_t byte, uint32_t address) SA1.Flags &= ~IRQ_PENDING_FLAG; break; case 0x220c: - // printf ("SNES NMI vector: %04x\n", byte | (Memory.FillRAM [0x220d] << 8)); - break; case 0x220d: - // printf ("SNES NMI vector: %04x\n", (byte << 8) | Memory.FillRAM [0x220c]); - break; - case 0x220e: - // printf ("SNES IRQ vector: %04x\n", byte | (Memory.FillRAM [0x220f] << 8)); - break; case 0x220f: - // printf ("SNES IRQ vector: %04x\n", (byte << 8) | Memory.FillRAM [0x220e]); - break; - case 0x2210: -#if 0 - printf("Timer %s\n", (byte & 0x80) ? "linear" : "HV"); - printf("Timer H-IRQ %s\n", (byte & 1) ? "enabled" : "disabled"); - printf("Timer V-IRQ %s\n", (byte & 2) ? "enabled" : "disabled"); -#endif break; + case 0x2211: printf("Timer reset\n"); break; @@ -605,62 +460,28 @@ void S9xSetSA1(uint8_t byte, uint32_t address) case 0x2222: case 0x2223: S9xSetSA1MemMap(address - 0x2220, byte); - // printf ("MMC: %02x\n", byte); break; case 0x2224: - // printf ("BWRAM image SNES %02x -> 0x6000\n", byte); Memory.BWRAM = Memory.SRAM + (byte & 7) * 0x2000; break; case 0x2225: - // printf ("BWRAM image SA1 %02x -> 0x6000 (%02x)\n", byte, Memory.FillRAM [address]); if (byte != Memory.FillRAM [address]) S9xSA1SetBWRAMMemMap(byte); break; case 0x2226: - // printf ("BW-RAM SNES write %s\n", (byte & 0x80) ? "enabled" : "disabled"); - break; case 0x2227: - // printf ("BW-RAM SA1 write %s\n", (byte & 0x80) ? "enabled" : "disabled"); - break; - case 0x2228: - // printf ("BW-RAM write protect area %02x\n", byte); - break; case 0x2229: - // printf ("I-RAM SNES write protect area %02x\n", byte); - break; case 0x222a: - // printf ("I-RAM SA1 write protect area %02x\n", byte); - break; case 0x2230: -#if 0 - printf("SA1 DMA %s\n", (byte & 0x80) ? "enabled" : "disabled"); - printf("DMA priority %s\n", (byte & 0x40) ? "DMA" : "SA1"); - printf("DMA %s\n", (byte & 0x20) ? "char conv" : "normal"); - printf("DMA type %s\n", (byte & 0x10) ? "BW-RAM -> I-RAM" : "SA1 -> I-RAM"); - printf("DMA distination %s\n", (byte & 4) ? "BW-RAM" : "I-RAM"); - printf("DMA source %s\n", DMAsource [byte & 3]); -#endif break; case 0x2231: if (byte & 0x80) SA1.in_char_dma = false; -#if 0 - printf("CHDEND %s\n", (byte & 0x80) ? "complete" : "incomplete"); - printf("DMA colour mode %d\n", byte & 3); - printf("virtual VRAM width %d\n", (byte >> 2) & 7); -#endif break; case 0x2232: case 0x2233: case 0x2234: - Memory.FillRAM [address] = byte; -#if 0 - printf("DMA source start %06x\n", - Memory.FillRAM [0x2232] | (Memory.FillRAM [0x2233] << 8) | - (Memory.FillRAM [0x2234] << 16)); -#endif - break; case 0x2235: Memory.FillRAM [address] = byte; break; @@ -686,23 +507,13 @@ void S9xSetSA1(uint8_t byte, uint32_t address) // Normal DMA to BW-RAM S9xSA1DMA(); } -#if 0 - printf("DMA dest address %06x\n", - Memory.FillRAM [0x2235] | (Memory.FillRAM [0x2236] << 8) | - (Memory.FillRAM [0x2237] << 16)); -#endif break; case 0x2238: case 0x2239: Memory.FillRAM [address] = byte; -#if 0 - printf("DMA length %04x\n", - Memory.FillRAM [0x2238] | (Memory.FillRAM [0x2239] << 8)); -#endif break; case 0x223f: SA1.VirtualBitmapFormat = (byte & 0x80) ? 2 : 4; - //printf ("virtual VRAM depth %d\n", (byte & 0x80) ? 2 : 4); break; case 0x2240: @@ -720,13 +531,6 @@ void S9xSetSA1(uint8_t byte, uint32_t address) case 0x224c: case 0x224d: case 0x224e: -#if 0 - if (!(SA1.Flags & TRACE_FLAG)) - { - TraceSA1(); - Trace(); - } -#endif Memory.FillRAM [address] = byte; break; @@ -795,7 +599,6 @@ void S9xSetSA1(uint8_t byte, uint32_t address) S9xSA1ReadVariableLengthData(false, true); return; default: - // printf ("W: %02x->%04x\n", byte, address); break; } if (address >= 0x2200 && address <= 0x22ff) @@ -896,7 +699,6 @@ static void S9xSA1DMA() { SA1.Flags |= IRQ_PENDING_FLAG; SA1.IRQActive |= DMA_IRQ_SOURCE; - // SA1.Executing = !SA1.Waiting; } } |