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Diffstat (limited to 'src/mame/drivers/nightmare.cpp')
-rw-r--r--src/mame/drivers/nightmare.cpp10
1 files changed, 4 insertions, 6 deletions
diff --git a/src/mame/drivers/nightmare.cpp b/src/mame/drivers/nightmare.cpp
index 9310db538fd..e3b89a4614d 100644
--- a/src/mame/drivers/nightmare.cpp
+++ b/src/mame/drivers/nightmare.cpp
@@ -347,13 +347,11 @@ void nightmare_state::nightmare_map(address_map &map)
void nightmare_state::nightmare_io_map(address_map &map)
{
- map(0x0001, 0x0001).r("ic8", FUNC(cdp1852_device::read)).w(FUNC(nightmare_state::unkout_w));
- map(0x0002, 0x0002).r("ic9", FUNC(cdp1852_device::read)).w("ic10", FUNC(cdp1852_device::write));
+ map(1, 1).r("ic8", FUNC(cdp1852_device::read)).w(FUNC(nightmare_state::unkout_w));
+ map(2, 2).r("ic9", FUNC(cdp1852_device::read)).w("ic10", FUNC(cdp1852_device::write));
- map(0x0004, 0x0004).rw(m_vdc, FUNC(tms9928a_device::vram_r), FUNC(tms9928a_device::vram_w));
- map(0x0005, 0x0005).rw(m_vdc, FUNC(tms9928a_device::register_r), FUNC(tms9928a_device::register_w));
- map(0x0006, 0x0006).rw(m_vdc2, FUNC(tms9928a_device::vram_r), FUNC(tms9928a_device::vram_w));
- map(0x0007, 0x0007).rw(m_vdc2, FUNC(tms9928a_device::register_r), FUNC(tms9928a_device::register_w));
+ map(4, 5).rw(m_vdc, FUNC(tms9928a_device::read), FUNC(tms9928a_device::write));
+ map(6, 7).rw(m_vdc2, FUNC(tms9928a_device::read), FUNC(tms9928a_device::write));
}
void nightmare_state::nightmare_sound_map(address_map &map)