From 0883dc08150e44dbb3f7d66948e2fa5f0046c4fd Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Thu, 3 Aug 2017 14:33:51 -0700
Subject: [PATCH] GB I/O: Improve accuracy of SGB MLT_REG polling (fixes #839)

---
 src/gb/io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gb/io.c b/src/gb/io.c
index 6b45f47ff..962eeb1bf 100644
--- a/src/gb/io.c
+++ b/src/gb/io.c
@@ -485,7 +485,7 @@ static uint8_t _readKeys(struct GB* gb) {
 	switch (gb->memory.io[REG_JOYP] & 0x30) {
 	case 0x30:
 	// TODO: Increment
-		keys = gb->model == GB_MODEL_SGB ? 0xF : 0;
+		keys = (gb->video.sgbCommandHeader >> 3) == SGB_MLT_REG ? 0xF : 0;
 		break;
 	case 0x20:
 		keys >>= 4;