From: gameblabla <gameblabla@openmailbox.org>
Date: Sun, 17 Feb 2019 08:26:51 +0000 (+0100)
Subject: psxmem: Reads of PIO Expansion area read all-ones.
X-Git-Tag: r23~161^2
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23643ee736c1cba08ac3f16028d238e295bb9dc7;p=pcsx_rearmed.git

psxmem: Reads of PIO Expansion area read all-ones.

Patch by senquack :
"Fixes 'Tetris with Card Captor Sakura - Eternal Heart (Japan)' startup.
Thanks to gameblabla for finding this issue and pointing out that
Mednafen had a fix for it. It's adapted here in a much simpler form."
---

diff --git a/libpcsxcore/psxmem.c b/libpcsxcore/psxmem.c
index 14fd9113..a1a641df 100644
--- a/libpcsxcore/psxmem.c
+++ b/libpcsxcore/psxmem.c
@@ -187,7 +187,7 @@ void psxMemReset() {
 	char bios[1024];
 
 	memset(psxM, 0, 0x00200000);
-	memset(psxP, 0, 0x00010000);
+	memset(psxP, 0xff, 0x00010000);
 
 	if (strcmp(Config.Bios, "HLE") != 0) {
 		sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios);