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Diffstat (limited to 'src/mame/drivers/datum.cpp')
-rw-r--r--src/mame/drivers/datum.cpp12
1 files changed, 5 insertions, 7 deletions
diff --git a/src/mame/drivers/datum.cpp b/src/mame/drivers/datum.cpp
index fc218695004..a49a560fe80 100644
--- a/src/mame/drivers/datum.cpp
+++ b/src/mame/drivers/datum.cpp
@@ -95,13 +95,11 @@ private:
void datum_state::datum_mem(address_map &map)
{
map.unmap_value_high();
- map.global_mask(0x7fff); // A15 not used
- map(0x0000, 0x007f).ram(); // inside CPU
- map(0x1000, 0x13ff).mirror(0x0c00).ram(); // main ram 2x 2114
- map(0x4000, 0x4001).mirror(0x0ffe).rw(m_acia, FUNC(acia6850_device::read), FUNC(acia6850_device::write));
- map(0x5000, 0x5003).mirror(0x0ffc).rw(m_pia2, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
- map(0x6000, 0x6003).mirror(0x0ffc).rw(m_pia1, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
- map(0x7000, 0x77ff).mirror(0x0800).rom().region("roms", 0);
+ map(0x1000, 0x13ff).mirror(0x8c00).ram(); // main ram 2x 2114
+ map(0x4000, 0x4001).mirror(0x8ffe).rw(m_acia, FUNC(acia6850_device::read), FUNC(acia6850_device::write));
+ map(0x5000, 0x5003).mirror(0x8ffc).rw(m_pia2, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
+ map(0x6000, 0x6003).mirror(0x8ffc).rw(m_pia1, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
+ map(0x7000, 0x77ff).mirror(0x8800).rom().region("roms", 0);
}