From 7a7857f47b33f1b63fb585d2dc6c60d87c3e928f Mon Sep 17 00:00:00 2001 From: aliaspider Date: Mon, 9 Nov 2015 19:55:28 +0100 Subject: C++ --> C99 --- src/dma.cpp | 873 ------------------------------------------------------------ 1 file changed, 873 deletions(-) delete mode 100644 src/dma.cpp (limited to 'src/dma.cpp') diff --git a/src/dma.cpp b/src/dma.cpp deleted file mode 100644 index 61c4d4e..0000000 --- a/src/dma.cpp +++ /dev/null @@ -1,873 +0,0 @@ -/* - * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. - * - * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and - * Jerremy Koot (jkoot@snes9x.com) - * - * Super FX C emulator code - * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and - * Gary Henderson. - * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_. - * - * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson. - * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_. - * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com). - * - * DOS port code 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 "snes9x.h" - -#include "memmap.h" -#include "ppu.h" -#include "cpuexec.h" -#include "missing.h" -#include "dma.h" -#include "apu.h" -#include "gfx.h" -#ifdef USE_SA1 -#include "sa1.h" -#endif - -//SDD1 -#include "sdd1emu.h" -uint8 buffer[0x10000]; -//SDD1// - -extern int HDMA_ModeByteCounts [8]; -extern uint8 *HDMAMemPointers [8]; -extern uint8 *HDMABasePointers [8]; - -static int S9xCompareSDD1IndexEntries (const void *p1, const void *p2) -{ - return (*(uint32 *) p1 - *(uint32 *) p2); -} - -/**********************************************************************************************/ -/* S9xDoDMA() */ -/* This function preforms the general dma transfer */ -/**********************************************************************************************/ -void S9xDoDMA (uint8 Channel) -{ - uint8 Work; - - if (Channel > 7 || CPU.InDMA) - return; - - CPU.InDMA = TRUE; - bool8 in_sa1_dma = FALSE; - uint8 *in_sdd1_dma = NULL; - SDMA *d = &DMA[Channel]; - - int count = d->TransferBytes; - - if (count == 0) - count = 0x10000; - - int inc = d->AAddressFixed ? 0 : (!d->AAddressDecrement ? 1 : -1); - - if((d->ABank==0x7E||d->ABank==0x7F)&&d->BAddress==0x80) - { - d->AAddress+= d->TransferBytes; - goto update_address; - } - switch (d->BAddress) - { - case 0x18: - case 0x19: - if (IPPU.RenderThisFrame) -#ifdef __DEBUG__ - printf("FLUSH_REDRAW by DMA BAddress %x", d->BAddress); -#endif - FLUSH_REDRAW (); - - break; - } - - if (Settings.SDD1) - { - if (d->AAddressFixed && Memory.FillRAM [0x4801] > 0) - { - // Hacky support for pre-decompressed S-DD1 data - inc = !d->AAddressDecrement ? 1 : -1; - uint32 address = (((d->ABank << 16) | d->AAddress) & 0xfffff) << 4; - - address |= Memory.FillRAM [0x4804 + ((d->ABank - 0xc0) >> 4)]; - if(Settings.SDD1Pack) - { - uint8* in_ptr=GetBasePointer(((d->ABank << 16) | d->AAddress)); - in_ptr+=d->AAddress; - - SDD1_decompress(buffer,in_ptr,d->TransferBytes); - in_sdd1_dma=buffer; - } - else - { - #if 1 - void *ptr = bsearch (&address, Memory.SDD1Index, - Memory.SDD1Entries, 12, S9xCompareSDD1IndexEntries); - if (ptr) - in_sdd1_dma = *(uint32 *) ((uint8 *) ptr + 4) + Memory.SDD1Data; - #else - uint8 *ptr = Memory.SDD1Index; - - for (uint32 e = 0; e < Memory.SDD1Entries; e++, ptr += 12) - { - if (address == *(uint32 *) ptr) - { - in_sdd1_dma = *(uint32 *) (ptr + 4) + Memory.SDD1Data; - break; - } - } - #endif - -/* if (!in_sdd1_dma) - { - // No matching decompressed data found. Must be some new - // graphics not encountered before. Log it if it hasn't been - // already. - uint8 *p = Memory.SDD1LoggedData; - bool8 found = FALSE; - uint8 SDD1Bank = Memory.FillRAM [0x4804 + ((d->ABank - 0xc0) >> 4)] | 0xf0; - - for (uint32 i = 0; i < Memory.SDD1LoggedDataCount; i++, p += 8) - { - if (*p == d->ABank || - *(p + 1) == (d->AAddress >> 8) && - *(p + 2) == (d->AAddress & 0xff) && - *(p + 3) == (count >> 8) && - *(p + 4) == (count & 0xff) && - *(p + 7) == SDD1Bank) - { - found = TRUE; - break; - } - } - if (!found && Memory.SDD1LoggedDataCount < MEMMAP_MAX_SDD1_LOGGED_ENTRIES) - { - *p = d->ABank; - *(p + 1) = d->AAddress >> 8; - *(p + 2) = d->AAddress & 0xff; - *(p + 3) = count >> 8; - *(p + 4) = count & 0xff; - *(p + 7) = SDD1Bank; - Memory.SDD1LoggedDataCount += 1; - } - } -*/ } - } - - Memory.FillRAM [0x4801] = 0; - } - -#ifdef USE_SA1 - if (d->BAddress == 0x18 && SA1.in_char_dma && (d->ABank & 0xf0) == 0x40) -#else - if (d->BAddress == 0x18 && (d->ABank & 0xf0) == 0x40) -#endif - { - // Perform packed bitmap to PPU character format conversion on the - // data before transmitting it to V-RAM via-DMA. - int num_chars = 1 << ((Memory.FillRAM [0x2231] >> 2) & 7); - int depth = (Memory.FillRAM [0x2231] & 3) == 0 ? 8 : - (Memory.FillRAM [0x2231] & 3) == 1 ? 4 : 2; - - int bytes_per_char = 8 * depth; - int bytes_per_line = depth * num_chars; - int char_line_bytes = bytes_per_char * num_chars; - uint32 addr = (d->AAddress / char_line_bytes) * char_line_bytes; - uint8 *base = GetBasePointer ((d->ABank << 16) + addr) + addr; - uint8 *buffer = &Memory.ROM [CMemory::MAX_ROM_SIZE - 0x10000]; - uint8 *p = buffer; - uint32 inc = char_line_bytes - (d->AAddress % char_line_bytes); - uint32 char_count = inc / bytes_per_char; - - in_sa1_dma = TRUE; - -//printf ("%08x,", base); fflush (stdout); -//printf ("depth = %d, count = %d, bytes_per_char = %d, bytes_per_line = %d, num_chars = %d, char_line_bytes = %d\n", -//depth, count, bytes_per_char, bytes_per_line, num_chars, char_line_bytes); - int i; - - switch (depth) - { - case 2: - for (i = 0; i < count; i += inc, base += char_line_bytes, - inc = char_line_bytes, char_count = num_chars) - { - uint8 *line = base + (num_chars - char_count) * 2; - for (uint32 j = 0; j < char_count && p - buffer < count; - j++, line += 2) - { - uint8 *q = line; - for (int l = 0; l < 8; l++, q += bytes_per_line) - { - for (int b = 0; b < 2; b++) - { - uint8 r = *(q + b); - *(p + 0) = (*(p + 0) << 1) | ((r >> 0) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 1) & 1); - *(p + 0) = (*(p + 0) << 1) | ((r >> 2) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 3) & 1); - *(p + 0) = (*(p + 0) << 1) | ((r >> 4) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 5) & 1); - *(p + 0) = (*(p + 0) << 1) | ((r >> 6) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 7) & 1); - } - p += 2; - } - } - } - break; - case 4: - for (i = 0; i < count; i += inc, base += char_line_bytes, - inc = char_line_bytes, char_count = num_chars) - { - uint8 *line = base + (num_chars - char_count) * 4; - for (uint32 j = 0; j < char_count && p - buffer < count; - j++, line += 4) - { - uint8 *q = line; - for (int l = 0; l < 8; l++, q += bytes_per_line) - { - for (int b = 0; b < 4; b++) - { - uint8 r = *(q + b); - *(p + 0) = (*(p + 0) << 1) | ((r >> 0) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 1) & 1); - *(p + 16) = (*(p + 16) << 1) | ((r >> 2) & 1); - *(p + 17) = (*(p + 17) << 1) | ((r >> 3) & 1); - *(p + 0) = (*(p + 0) << 1) | ((r >> 4) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 5) & 1); - *(p + 16) = (*(p + 16) << 1) | ((r >> 6) & 1); - *(p + 17) = (*(p + 17) << 1) | ((r >> 7) & 1); - } - p += 2; - } - p += 32 - 16; - } - } - break; - case 8: - for (i = 0; i < count; i += inc, base += char_line_bytes, - inc = char_line_bytes, char_count = num_chars) - { - uint8 *line = base + (num_chars - char_count) * 8; - for (uint32 j = 0; j < char_count && p - buffer < count; - j++, line += 8) - { - uint8 *q = line; - for (int l = 0; l < 8; l++, q += bytes_per_line) - { - for (int b = 0; b < 8; b++) - { - uint8 r = *(q + b); - *(p + 0) = (*(p + 0) << 1) | ((r >> 0) & 1); - *(p + 1) = (*(p + 1) << 1) | ((r >> 1) & 1); - *(p + 16) = (*(p + 16) << 1) | ((r >> 2) & 1); - *(p + 17) = (*(p + 17) << 1) | ((r >> 3) & 1); - *(p + 32) = (*(p + 32) << 1) | ((r >> 4) & 1); - *(p + 33) = (*(p + 33) << 1) | ((r >> 5) & 1); - *(p + 48) = (*(p + 48) << 1) | ((r >> 6) & 1); - *(p + 49) = (*(p + 49) << 1) | ((r >> 7) & 1); - } - p += 2; - } - p += 64 - 16; - } - } - break; - } - - } - - if (!d->TransferDirection) - { -#ifdef VAR_CYCLES - //reflects extra cycle used by DMA - CPU.Cycles += 8 * (count+1); -#else - //needs fixing for the extra DMA cycle - CPU.Cycles += (1+count) + ((1+count) >> 2); -#endif - uint8 *base = GetBasePointer ((d->ABank << 16) + d->AAddress); - uint16 p = d->AAddress; - - if (!base) - base = Memory.ROM; - - if (in_sa1_dma) - { - base = &Memory.ROM [CMemory::MAX_ROM_SIZE - 0x10000]; - p = 0; - } - - if (in_sdd1_dma) - { - base = in_sdd1_dma; - p = 0; - } - - if (inc > 0) - d->AAddress += count; - else - if (inc < 0) - d->AAddress -= count; - - if (d->TransferMode == 0 || d->TransferMode == 2) - { - switch (d->BAddress) - { - case 0x04: - do - { - Work = *(base + p); - REGISTER_2104(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - break; - case 0x18: - IPPU.FirstVRAMRead = TRUE; - if (!PPU.VMA.FullGraphicCount) - { - do - { - Work = *(base + p); - REGISTER_2118_linear(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - } - else - { - do - { - Work = *(base + p); - REGISTER_2118_tile(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - } - break; - case 0x19: - IPPU.FirstVRAMRead = TRUE; - if (!PPU.VMA.FullGraphicCount) - { - do - { - Work = *(base + p); - REGISTER_2119_linear(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - } - else - { - do - { - Work = *(base + p); - REGISTER_2119_tile(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - } - break; - case 0x22: - do - { - Work = *(base + p); - REGISTER_2122(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - break; - case 0x80: - do - { - Work = *(base + p); - REGISTER_2180(Work); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - break; - default: - do - { - Work = *(base + p); - S9xSetPPU (Work, 0x2100 + d->BAddress); - p += inc; - CHECK_SOUND(); - } while (--count > 0); - break; - } - } - else - if (d->TransferMode == 1 || d->TransferMode == 5) - { - if (d->BAddress == 0x18) - { - // Write to V-RAM - IPPU.FirstVRAMRead = TRUE; - if (!PPU.VMA.FullGraphicCount) - { - while (count > 1) - { - Work = *(base + p); - REGISTER_2118_linear(Work); - p += inc; - - Work = *(base + p); - REGISTER_2119_linear(Work); - p += inc; - CHECK_SOUND(); - count -= 2; - } - if (count == 1) - { - Work = *(base + p); - REGISTER_2118_linear(Work); - p += inc; - } - } - else - { - while (count > 1) - { - Work = *(base + p); - REGISTER_2118_tile(Work); - p += inc; - - Work = *(base + p); - REGISTER_2119_tile(Work); - p += inc; - CHECK_SOUND(); - count -= 2; - } - if (count == 1) - { - Work = *(base + p); - REGISTER_2118_tile(Work); - p += inc; - } - } - } - else - { - // DMA mode 1 general case - while (count > 1) - { - Work = *(base + p); - S9xSetPPU (Work, 0x2100 + d->BAddress); - p += inc; - - Work = *(base + p); - S9xSetPPU (Work, 0x2101 + d->BAddress); - p += inc; - CHECK_SOUND(); - count -= 2; - } - if (count == 1) - { - Work = *(base + p); - S9xSetPPU (Work, 0x2100 + d->BAddress); - p += inc; - } - } - } - else - if (d->TransferMode == 3) - { - do - { - Work = *(base + p); - S9xSetPPU (Work, 0x2100 + d->BAddress); - p += inc; - if (count <= 1) - break; - - Work = *(base + p); - S9xSetPPU (Work, 0x2100 + d->BAddress); - p += inc; - if (count <= 2) - break; - - Work = *(base + p); - S9xSetPPU (Work, 0x2101 + d->BAddress); - p += inc; - if (count <= 3) - break; - - Work = *(base + p); - S9xSetPPU (Work, 0x2101 + d->BAddress); - p += inc; - CHECK_SOUND(); - count -= 4; - } while (count > 0); - } - else - if (d->TransferMode == 4) - { - do - { - Work = *(base + p); - S9xSetPPU (Work, 0x2100 + d->BAddress); - p += inc; - if (count <= 1) - break; - - Work = *(base + p); - S9xSetPPU (Work, 0x2101 + d->BAddress); - p += inc; - if (count <= 2) - break; - - Work = *(base + p); - S9xSetPPU (Work, 0x2102 + d->BAddress); - p += inc; - if (count <= 3) - break; - - Work = *(base + p); - S9xSetPPU (Work, 0x2103 + d->BAddress); - p += inc; - CHECK_SOUND(); - count -= 4; - } while (count > 0); - } - } - else - { - do - { - switch (d->TransferMode) - { - case 0: - case 2: -#ifndef VAR_CYCLES - CPU.Cycles += 1; -#endif - Work = S9xGetPPU (0x2100 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - --count; - break; - - case 1: - case 5: -#ifndef VAR_CYCLES - CPU.Cycles += 3; -#endif - Work = S9xGetPPU (0x2100 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2101 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - count--; - break; - - case 3: -#ifndef VAR_CYCLES - CPU.Cycles += 6; -#endif - Work = S9xGetPPU (0x2100 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2100 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2101 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2101 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - count--; - break; - - case 4: -#ifndef VAR_CYCLES - CPU.Cycles += 6; -#endif - Work = S9xGetPPU (0x2100 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2101 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2102 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - if (!--count) - break; - - Work = S9xGetPPU (0x2103 + d->BAddress); - S9xSetByte (Work, (d->ABank << 16) + d->AAddress); - d->AAddress += inc; - count--; - break; - - default: - count = 0; - break; - } - CHECK_SOUND(); - } while (count); - } - -//#ifdef SPC700_C -#ifdef SPC700_SHUTDOWN - CPU.APU_APUExecuting = Settings.APUEnabled; -#endif - asm_APU_EXECUTE(1); // execute but only in normal mode -//#endif - while (CPU.Cycles > CPU.NextEvent) - S9xDoHBlankProcessing (); - -update_address: - // Super Punch-Out requires that the A-BUS address be updated after the - // DMA transfer. - Memory.FillRAM[0x4302 + (Channel << 4)] = (uint8) d->AAddress; - Memory.FillRAM[0x4303 + (Channel << 4)] = d->AAddress >> 8; - - // Secret of the Mana requires that the DMA bytes transfer count be set to - // zero when DMA has completed. - Memory.FillRAM [0x4305 + (Channel << 4)] = 0; - Memory.FillRAM [0x4306 + (Channel << 4)] = 0; - - DMA[Channel].IndirectAddress = 0; - d->TransferBytes = 0; - - CPU.InDMA = FALSE; -} - -void S9xStartHDMA () -{ - //if (Settings.DisableHDMA) - //IPPU.HDMA = 0; - //else - missing.hdma_this_frame = IPPU.HDMA = Memory.FillRAM [0x420c]; - - IPPU.HDMAStarted = TRUE; - - for (uint8 i = 0; i < 8; i++) - { - if (IPPU.HDMA & (1 << i)) - { - DMA [i].LineCount = 0; - DMA [i].FirstLine = TRUE; - DMA [i].Address = DMA [i].AAddress; - } - HDMAMemPointers [i] = NULL; - } -} - -uint8 S9xDoHDMA (uint8 byte) -{ - struct SDMA *p = &DMA [0]; - - int d = 0; - - for (uint8 mask = 1; mask; mask <<= 1, p++, d++) - { - if (byte & mask) - { - if (!p->LineCount) - { - uint8 line = S9xGetByte ((p->ABank << 16) + p->Address); - if (line == 0x80) - { - p->Repeat = TRUE; - p->LineCount = 128; - } - else - { - p->Repeat = !(line & 0x80); - p->LineCount = line & 0x7f; - } - - // Disable H-DMA'ing into V-RAM (register 2118) for Hook - if (!p->LineCount || p->BAddress == 0x18) - { - byte &= ~mask; - p->IndirectAddress += HDMAMemPointers [d] - HDMABasePointers [d]; - Memory.FillRAM [0x4305 + (d << 4)] = (uint8) p->IndirectAddress; - Memory.FillRAM [0x4306 + (d << 4)] = p->IndirectAddress >> 8; - continue; - } - - p->Address++; - p->FirstLine = 1; - if (p->HDMAIndirectAddressing) - { - p->IndirectBank = Memory.FillRAM [0x4307 + (d << 4)]; - p->IndirectAddress = S9xGetWord ((p->ABank << 16) + p->Address); - p->Address += 2; - } - else - { - p->IndirectBank = p->ABank; - p->IndirectAddress = p->Address; - } - HDMABasePointers [d] = HDMAMemPointers [d] = - S9xGetMemPointer ((p->IndirectBank << 16) + p->IndirectAddress); - } - else - { - - if (!HDMAMemPointers [d]) - { - if (!p->HDMAIndirectAddressing) - { - p->IndirectBank = p->ABank; - p->IndirectAddress = p->Address; - } - - if (!(HDMABasePointers [d] = HDMAMemPointers [d] = - S9xGetMemPointer ((p->IndirectBank << 16) + p->IndirectAddress))) - { - byte &= ~mask; - continue; - } - // Uncommenting the following line breaks Punchout - it starts - // H-DMA during the frame. - //p->FirstLine = TRUE; - } - } - if (p->Repeat && !p->FirstLine) - { - p->LineCount--; - continue; - } - switch (p->TransferMode) - { - case 0: -#ifndef VAR_CYCLES - CPU.Cycles += 1; -#else - CPU.Cycles += 8; -#endif - S9xSetPPU (*HDMAMemPointers [d]++, 0x2100 + p->BAddress); - break; - case 1: - case 5: -#ifndef VAR_CYCLES - CPU.Cycles += 3; -#else - CPU.Cycles += 16; -#endif - S9xSetPPU (*(HDMAMemPointers [d] + 0), 0x2100 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 1), 0x2101 + p->BAddress); - HDMAMemPointers [d] += 2; - break; - case 2: - case 6: -#ifndef VAR_CYCLES - CPU.Cycles += 3; -#else - CPU.Cycles += 16; -#endif - S9xSetPPU (*(HDMAMemPointers [d] + 0), 0x2100 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 1), 0x2100 + p->BAddress); - HDMAMemPointers [d] += 2; - break; - case 3: - case 7: -#ifndef VAR_CYCLES - CPU.Cycles += 6; -#else - CPU.Cycles += 32; -#endif - S9xSetPPU (*(HDMAMemPointers [d] + 0), 0x2100 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 1), 0x2100 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 2), 0x2101 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 3), 0x2101 + p->BAddress); - HDMAMemPointers [d] += 4; - break; - case 4: -#ifndef VAR_CYCLES - CPU.Cycles += 6; -#else - CPU.Cycles += 32; -#endif - S9xSetPPU (*(HDMAMemPointers [d] + 0), 0x2100 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 1), 0x2101 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 2), 0x2102 + p->BAddress); - S9xSetPPU (*(HDMAMemPointers [d] + 3), 0x2103 + p->BAddress); - HDMAMemPointers [d] += 4; - break; - } - if (!p->HDMAIndirectAddressing) - p->Address += HDMA_ModeByteCounts [p->TransferMode]; - p->FirstLine = FALSE; - p->LineCount--; - } - } - return (byte); -} - -void S9xResetDMA () -{ - int d; - for (d = 0; d < 8; d++) - { - DMA [d].TransferDirection = FALSE; - DMA [d].HDMAIndirectAddressing = FALSE; - DMA [d].AAddressFixed = TRUE; - DMA [d].AAddressDecrement = FALSE; - DMA [d].TransferMode = 0xff; - DMA [d].ABank = 0xff; - DMA [d].AAddress = 0xffff; - DMA [d].Address = 0xffff; - DMA [d].BAddress = 0xff; - DMA [d].TransferBytes = 0xffff; - } - for (int c = 0x4300; c < 0x4380; c += 0x10) - { - for (d = c; d < c + 12; d++) - Memory.FillRAM [d] = 0xff; - - Memory.FillRAM [c + 0xf] = 0xff; - } -} -- cgit v1.2.3