diff options
Diffstat (limited to 'PcsxSrc/PsxCounters.c')
| -rw-r--r-- | PcsxSrc/PsxCounters.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/PcsxSrc/PsxCounters.c b/PcsxSrc/PsxCounters.c deleted file mode 100644 index 39a8a41..0000000 --- a/PcsxSrc/PsxCounters.c +++ /dev/null @@ -1,202 +0,0 @@ -/* Pcsx - Pc Psx Emulator - * Copyright (C) 1999-2002 Pcsx 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <string.h> - -#include "PsxCommon.h" - -static int cnts = 4; - -static void psxRcntUpd(unsigned long index) { - psxCounters[index].sCycle = psxRegs.cycle; - if ((!(psxCounters[index].mode & 1)) || (index!=2)) { - if (psxCounters[index].mode & 0x08) { // Count to target - psxCounters[index].Cycle = ((psxCounters[index].target - psxCounters[index].count) * psxCounters[index].rate) / BIAS; - } - else { // Count to 0xffff - psxCounters[index].Cycle = ((0xffff - psxCounters[index].count) * psxCounters[index].rate) / BIAS; - } - } else psxCounters[index].Cycle = 0xffffffff; -} - -static void psxRcntReset(unsigned long index) { - psxCounters[index].count = 0; - psxRcntUpd(index); - - if ((psxCounters[index].mode & 0x50) == 0x50) psxHu32(0x1070)|= psxCounters[index].interrupt; -} - -static void psxRcntSet() { - int i; - - psxNextCounter = 0x7fffffff; - psxNextsCounter = psxRegs.cycle; - - for (i=0; i<cnts; i++) { - long count = psxCounters[i].Cycle - (psxRegs.cycle - psxCounters[i].sCycle); - - if (count < 0) { - psxNextCounter = 0; break; - } - - if (count < (long)psxNextCounter) { - psxNextCounter = count; - } - } -} - -void psxRcntInit() { - - memset(psxCounters, 0, sizeof(psxCounters)); - - psxCounters[0].rate = 1; psxCounters[0].interrupt = 16; - psxCounters[1].rate = 1; psxCounters[1].interrupt = 32; - psxCounters[2].rate = 1; psxCounters[2].interrupt = 64; - - psxCounters[3].interrupt = 1; - psxCounters[3].mode = 0x58; // The VSync counter mode - psxCounters[3].target = 1; - UpdateVSyncRate(); - - if (SPU_update != NULL) { - cnts = 5; - - if (Config.PsxType) - psxCounters[4].rate = (262 / 32) * 50; // pal - else - psxCounters[4].rate = (312 / 32) * 60; // ntsc - psxCounters[4].target = 1; - psxCounters[4].mode = 0x8; - } else if (SPU_async != NULL) { - cnts = 5; - - psxCounters[4].rate = 768 * 64; - psxCounters[4].target = 1; - psxCounters[4].mode = 0x8; - } else cnts = 4; - - psxRcntUpd(0); psxRcntUpd(1); psxRcntUpd(2); psxRcntUpd(3); - psxRcntSet(); -} - -void UpdateVSyncRate() { - if (Config.PsxType) // ntsc - 0 | pal - 1 - psxCounters[3].rate = (PSXCLK / 50);// / BIAS; - else psxCounters[3].rate = (PSXCLK / 60);// / BIAS; -} - -void psxRcntUpdate() { - if ((psxRegs.cycle - psxCounters[3].sCycle) >= psxCounters[3].Cycle) { - psxRcntReset(3); - GPU_updateLace(); // updateGPU - SysUpdate(); -#ifdef GTE_LOG - GTE_LOG("VSync\n"); -#endif - } - - if ((psxRegs.cycle - psxCounters[0].sCycle) >= psxCounters[0].Cycle) { - psxRcntReset(0); - } - - if ((psxRegs.cycle - psxCounters[1].sCycle) >= psxCounters[1].Cycle) { - psxRcntReset(1); - } - - if ((psxRegs.cycle - psxCounters[2].sCycle) >= psxCounters[2].Cycle) { - psxRcntReset(2); - } - - if (cnts >= 5) { - if ((psxRegs.cycle - psxCounters[4].sCycle) >= psxCounters[4].Cycle) { - if (SPU_update != NULL) - SPU_update(); - if (SPU_async != NULL) - SPU_async((psxRegs.cycle - psxCounters[4].sCycle) * BIAS); - psxRcntReset(4); - } - } - - psxRcntSet(); -} - -void psxRcntWcount(unsigned long index, unsigned long value) { -// SysPrintf("writeCcount[%d] = %x\n", index, value); -// PSXCPU_LOG("writeCcount[%d] = %x\n", index, value); - psxCounters[index].count = value; - psxRcntUpd(index); - psxRcntSet(); -} - -void psxRcntWmode(unsigned long index, unsigned long value) { -// SysPrintf("writeCmode[%ld] = %lx\n", index, value); - psxCounters[index].mode = value; - if(index == 0) { - switch (value & 0x300) { - case 0x100: - psxCounters[index].rate = ((psxCounters[3].rate /** BIAS*/) / 386) / 262; // seems ok - break; - default: - psxCounters[index].rate = 1; - } - } - else if(index == 1) { - switch (value & 0x300) { - case 0x100: - psxCounters[index].rate = (psxCounters[3].rate /** BIAS*/) / 262; // seems ok - break; - default: - psxCounters[index].rate = 1; - } - } - else if(index == 2) { - switch (value & 0x300) { - case 0x200: - psxCounters[index].rate = 8; // 1/8 speed - break; - default: - psxCounters[index].rate = 1; // normal speed - } - } - - // Need to set a rate and target - psxRcntUpd(index); - psxRcntSet(); -} - -void psxRcntWtarget(unsigned long index, unsigned long value) { -// SysPrintf("writeCtarget[%ld] = %lx\n", index, value); - psxCounters[index].target = value; - psxRcntUpd(index); - psxRcntSet(); -} - -unsigned long psxRcntRcount(unsigned long index) { -// if ((!(psxCounters[index].mode & 1)) || (index!=2)) { - return (psxCounters[index].count + BIAS * (psxRegs.cycle - psxCounters[index].sCycle) / psxCounters[index].rate) & 0xffff; -// } else return 0; -} - -int psxRcntFreeze(gzFile f, int Mode) { - char Unused[4096 - sizeof(psxCounter)]; - - gzfreezel(psxCounters); - gzfreezel(Unused); - - return 0; -} |