From b1eb84bc59c07b110e36714bf0222197f298ec09 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Fri, 16 Sep 2022 02:31:37 +0300
Subject: [PATCH] cdrom: adjust timing

---
 libpcsxcore/cdrom.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c
index 487dfb8d..3f405795 100644
--- a/libpcsxcore/cdrom.c
+++ b/libpcsxcore/cdrom.c
@@ -295,8 +295,8 @@ static void setIrq(int log_cmd)
 	if (cdr.Stat)
 	{
 		int i;
-		SysPrintf("CDR IRQ=%d cmd %02x stat %02x: ",
-			!!(cdr.Stat & cdr.Reg2), log_cmd, cdr.Stat);
+		SysPrintf("%u cdrom: CDR IRQ=%d cmd %02x stat %02x: ",
+			psxRegs.cycle, !!(cdr.Stat & cdr.Reg2), log_cmd, cdr.Stat);
 		for (i = 0; i < cdr.ResultC; i++)
 			SysPrintf("%02x ", cdr.Result[i]);
 		SysPrintf("\n");
@@ -651,7 +651,8 @@ void cdrInterrupt(void) {
 	int i;
 
 	if (cdr.Stat) {
-		CDR_LOG_I("cdrom: cmd %02x with irqstat %x\n", cdr.CmdInProgress, cdr.Stat);
+		CDR_LOG_I("%u cdrom: cmd %02x with irqstat %x\n",
+			psxRegs.cycle, cdr.CmdInProgress, cdr.Stat);
 		return;
 	}
 	if (cdr.Irq1Pending) {
@@ -1118,7 +1119,8 @@ void cdrInterrupt(void) {
 	}
 	else if (cdr.Cmd && cdr.Cmd != (Cmd & 0xff)) {
 		cdr.CmdInProgress = cdr.Cmd;
-		CDR_LOG_I("cdrom: cmd %02x came before %02x finished\n", cdr.Cmd, Cmd);
+		CDR_LOG_I("%u cdrom: cmd %02x came before %02x finished\n",
+			psxRegs.cycle, cdr.Cmd, Cmd);
 	}
 
 	setIrq(Cmd);
@@ -1344,7 +1346,7 @@ void cdrWrite1(unsigned char rt) {
 	}
 
 #ifdef CDR_LOG_CMD_IRQ
-	SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
+	SysPrintf("%u cdrom: CD1 write: %x (%s)", psxRegs.cycle, rt, CmdName[rt]);
 	if (cdr.ParamC) {
 		int i;
 		SysPrintf(" Param[%d] = {", cdr.ParamC);
@@ -1365,8 +1367,8 @@ void cdrWrite1(unsigned char rt) {
 		CDR_INT(5000);
 	}
 	else {
-		CDR_LOG_I("cdr: cmd while busy: %02x, prev %02x, busy %02x\n",
-			rt, cdr.Cmd, cdr.CmdInProgress);
+		CDR_LOG_I("%u cdrom: cmd while busy: %02x, prev %02x, busy %02x\n",
+			psxRegs.cycle, rt, cdr.Cmd, cdr.CmdInProgress);
 		if (cdr.CmdInProgress < 0x100) // no pending 2nd response
 			cdr.CmdInProgress = rt;
 	}
@@ -1428,11 +1430,13 @@ void cdrWrite3(unsigned char rt) {
 	case 1:
 		if (cdr.Stat & rt) {
 #ifdef CDR_LOG_CMD_IRQ
-			SysPrintf("ack %02x (w %02x)\n", cdr.Stat & rt, rt);
+			SysPrintf("%u cdrom: ack %02x (w %02x)\n",
+				psxRegs.cycle, cdr.Stat & rt, rt);
 #endif
+			// note: Croc vs Discworld Noir
 			if (!(psxRegs.interrupt & (1 << PSXINT_CDR)) &&
 			    (cdr.CmdInProgress || cdr.Irq1Pending))
-				CDR_INT(2000); // 710+
+				CDR_INT(850); // 711-993
 		}
 		cdr.Stat &= ~rt;
 
-- 
2.39.5