From a6e034904c2ae8b254b707a17df7de161efbfd6c Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Wed, 20 Sep 2023 22:49:40 +0300
Subject: [PATCH] cdrom: some report mode details

trusting mednafen on this one
libretro/pcsx_rearmed#762
---
 libpcsxcore/cdrom.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c
index 6f48df05..0ae2c50b 100644
--- a/libpcsxcore/cdrom.c
+++ b/libpcsxcore/cdrom.c
@@ -65,7 +65,8 @@ static struct {
 		unsigned char Absolute[3];
 	} subq;
 	unsigned char TrackChanged;
-	unsigned char unused3[3];
+	unsigned char ReportDelay;
+	unsigned char unused3[2];
 	unsigned int  freeze_ver;
 
 	unsigned char Prev[4];
@@ -524,7 +525,9 @@ static void cdrPlayInterrupt_Autopause()
 		StopCdda();
 		SetPlaySeekRead(cdr.StatP, 0);
 	}
-	else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
+	else if ((cdr.Mode & MODE_REPORT) && !cdr.ReportDelay &&
+		 ((cdr.subq.Absolute[2] & 0x0f) == 0 || cdr.FastForward || cdr.FastBackward))
+	{
 		cdr.Result[0] = cdr.StatP;
 		cdr.Result[1] = cdr.subq.Track;
 		cdr.Result[2] = cdr.subq.Index;
@@ -560,6 +563,9 @@ static void cdrPlayInterrupt_Autopause()
 		SetResultSize(8);
 		setIrq(0x1001);
 	}
+
+	if (cdr.ReportDelay)
+		cdr.ReportDelay--;
 }
 
 // LastReadCycles
@@ -817,6 +823,7 @@ void cdrInterrupt(void) {
 			cdr.SubqForwardSectors = 1;
 			cdr.TrackChanged = FALSE;
 			cdr.FirstSector = 1;
+			cdr.ReportDelay = 60;
 
 			if (!Config.Cdda)
 				CDR_play(cdr.SetSectorPlay);
-- 
2.39.5