From 8886e5e17977dd3c0293787ecd9caa88c2aafbe5 Mon Sep 17 00:00:00 2001 From: Peter Ferrie Date: Sun, 2 Jan 2022 14:18:59 -0800 Subject: tmaster: it's mirrored memory [nw] --- src/mame/drivers/tmaster.cpp | 29 ++--------------------------- 1 file changed, 2 insertions(+), 27 deletions(-) diff --git a/src/mame/drivers/tmaster.cpp b/src/mame/drivers/tmaster.cpp index b8787f7c369..4693241f1ab 100644 --- a/src/mame/drivers/tmaster.cpp +++ b/src/mame/drivers/tmaster.cpp @@ -120,8 +120,7 @@ public: m_blitter(*this, "blitter"), m_oki(*this, "oki"), m_microtouch(*this,"microtouch"), - m_duart(*this, "duart68681"), - m_mainram(*this, "mainram") + m_duart(*this, "duart68681") { } void tm(machine_config &config); @@ -143,9 +142,6 @@ private: uint16_t rtc_r(offs_t offset); void rtc_w(offs_t offset, uint16_t data); - uint16_t oob_r(offs_t offset); - void oob_w(offs_t offset, uint16_t data); - void tmaster_map(address_map &map); void cpu_space_map(address_map &map); @@ -157,8 +153,6 @@ private: required_device m_microtouch; required_device m_duart; - required_shared_ptr m_mainram; - int m_okibank; uint8_t m_rtc_ram[8]; @@ -261,21 +255,6 @@ void tmaster_state::rtc_w(offs_t offset, uint16_t data) } } -uint16_t tmaster_state::oob_r(offs_t offset) -{ - if (m_maincpu->pc() > 0x500) - { - return 0; - } - - return m_mainram.target()[offset]; -} - -void tmaster_state::oob_w(offs_t offset, uint16_t data) -{ - m_mainram.target()[offset] = data; -} - /*************************************************************************** Memory Maps @@ -290,11 +269,7 @@ READ_LINE_MEMBER(tmaster_state::read_rand) void tmaster_state::tmaster_map(address_map &map) { map(0x000000, 0x1fffff).rom(); - map(0x200000, 0x27ffff).ram().share("mainram"); - // special case memory should RAZ after memtest completes, otherwise Solitaire games break - // looks like a game bug that is somehow handled by the hardware - map(0x212000, 0x212fff).rw(FUNC(tmaster_state::oob_r), FUNC(tmaster_state::oob_w)); - + map(0x200000, 0x20ffff).mirror(0x70000).ram(); map(0x280000, 0x28ffef).ram().share("nvram"); map(0x28fff0, 0x28ffff).rw(FUNC(tmaster_state::rtc_r), FUNC(tmaster_state::rtc_w)); -- cgit v1.2.3