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tmaster: it's mirrored memory [nw]

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This commit is contained in:
Peter Ferrie 2022-01-02 14:18:59 -08:00
parent c01645cc47
commit 8886e5e179
1 changed files with 2 additions and 27 deletions
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29
src/mame/drivers/tmaster.cpp
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@ -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<microtouch_device> m_microtouch;
required_device<mc68681_device> m_duart;
required_shared_ptr<uint16_t> 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));