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-rw-r--r--src/mame/machine/cmi_mkbd.cpp1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/mame/machine/cmi_mkbd.cpp b/src/mame/machine/cmi_mkbd.cpp
index 69be6b34354..ea19b73e624 100644
--- a/src/mame/machine/cmi_mkbd.cpp
+++ b/src/mame/machine/cmi_mkbd.cpp
@@ -305,7 +305,6 @@ WRITE_LINE_MEMBER( cmi_music_keyboard_device::kbd_cts_w )
void cmi_music_keyboard_device::muskeys_map(address_map &map)
{
map.unmap_value_high();
- map(0x0000, 0x007f).ram();
map(0x0080, 0x0083).rw(m_cmi10_pia_u21, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
map(0x0090, 0x0093).rw(m_cmi10_pia_u20, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
map(0x00a0, 0x00a1).rw(m_acia_kbd, FUNC(acia6850_device::read), FUNC(acia6850_device::write));