From fcdec094e63876abb2eb2f3dc687cd50a864977a Mon Sep 17 00:00:00 2001 From: Olivier Galibert Date: Thu, 16 Mar 2023 13:30:30 +0100 Subject: st: add wait state of mfp accesses, partially helps syntax terror, makes ventura run --- src/mame/atari/atarist.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mame/atari/atarist.cpp b/src/mame/atari/atarist.cpp index f7fd82f5117..7d6b4920ff8 100644 --- a/src/mame/atari/atarist.cpp +++ b/src/mame/atari/atarist.cpp @@ -817,7 +817,7 @@ void st_state::st_super_map(address_map &map) // no blitter on original ST - map(0xfffa00, 0xfffa3f).rw(m_mfp, FUNC(mc68901_device::read), FUNC(mc68901_device::write)).umask16(0x00ff); + map(0xfffa00, 0xfffa3f).after_delay(NAME([](offs_t) { return 4; })).rw(m_mfp, FUNC(mc68901_device::read), FUNC(mc68901_device::write)).umask16(0x00ff); map(0xfffc00, 0xfffc03).rw(m_acia[0], FUNC(acia6850_device::read), FUNC(acia6850_device::write)).umask16(0xff00); map(0xfffc04, 0xfffc07).rw(m_acia[1], FUNC(acia6850_device::read), FUNC(acia6850_device::write)).umask16(0xff00); -- cgit v1.2.3