add neogeo cd super speed loader hack (+dip option)

finalburnneo · Jul 28, 2023 · 6a0ca6d · 6a0ca6d
1 parent ea042a3
commit 6a0ca6d
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diff --git a/src/burn/drv/neogeo/d_neogeo.cpp b/src/burn/drv/neogeo/d_neogeo.cpp
@@ -908,6 +908,10 @@ static struct BurnDIPInfo neoCDDIPList[] = {
 	{0x01,	0x01, 0x03,	0x00, "Neo Geo CDZ"						},
 	{0x01,	0x01, 0x03,	0x01, "Universe BIOS (Hack, Ver. 3.3)"	},
 	{0x01,	0x01, 0x03,	0x02, "Universe BIOS (Hack, Ver. 3.2)"	},
+
+	{0,		0xFD, 0,	2,    "CD Loading Speed"				},
+	{0x01,	0x01, 0x80,	0x00, "Normal"							},
+	{0x01,	0x01, 0x80,	0x80, "Super Speed"						},
 };
 
 STDDIPINFO(neoCD)

diff --git a/src/burn/drv/neogeo/neo_run.cpp b/src/burn/drv/neogeo/neo_run.cpp
@@ -4577,6 +4577,8 @@ static INT32 NeoSekRun(const INT32 nCycles)
 	return nCyclesExecutedTotal;
 }
 
+static INT32 in_cd_ffwd = 0;
+
 INT32 NeoFrame()
 {
 	//bprintf(0, _T("%X,"), SekReadWord(0x108)); // show game-id
@@ -5108,5 +5110,15 @@ INT32 NeoFrame()
 			CDEmuGetSoundBuffer(pBurnSoundOut, nBurnSoundLen);
 	}
 
+	// neocd super-speed-loader hack for the impatient
+	if (nNeoSystemType & NEO_SYS_CD && in_cd_ffwd == 0 && NeoCDBios & 0x80) {
+		in_cd_ffwd = 1;
+		while (NeoCDAssyStatus == 1 && bNeoCDLoadSector && LC8951RegistersW[10] & 4) {
+			NeoFrame();
+			if (pBurnSoundOut) BurnSoundClear();
+		}
+		in_cd_ffwd = 0;
+	}
+
 	return 0;
 }