From b4455b8923ceb9cba6da5d9d9ff85ef128164cd0 Mon Sep 17 00:00:00 2001 From: Nigel Barnes Date: Wed, 6 Nov 2019 13:21:29 +0000 Subject: [PATCH] einstein: Disable rom switching side effects (nw) --- src/mame/drivers/einstein.cpp | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/mame/drivers/einstein.cpp b/src/mame/drivers/einstein.cpp index 47b1b719576..2d689fd1f63 100644 --- a/src/mame/drivers/einstein.cpp +++ b/src/mame/drivers/einstein.cpp @@ -419,8 +419,11 @@ WRITE8_MEMBER(einstein_state::evdpint_msk_w) READ8_MEMBER( einstein_state::rom_r ) { - m_rom_enabled ^= 1; - m_bank1->set_entry(m_rom_enabled); + if (!machine().side_effects_disabled()) + { + m_rom_enabled ^= 1; + m_bank1->set_entry(m_rom_enabled); + } return 0xff; }