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-rw-r--r--src/mame/drivers/spectrum.cpp8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/mame/drivers/spectrum.cpp b/src/mame/drivers/spectrum.cpp
index df9c72196e5..e28d688fcb0 100644
--- a/src/mame/drivers/spectrum.cpp
+++ b/src/mame/drivers/spectrum.cpp
@@ -721,10 +721,12 @@ void spectrum_state::init_spectrum()
switch (m_ram->size())
{
case 48*1024:
- m_specmem->space(AS_PROGRAM).install_ram(0x8000, 0xffff, nullptr);
- [[fallthrough]];
+ m_specmem->space(AS_PROGRAM).install_ram(0x8000, 0xffff, m_ram->pointer() + 0x4000);
+ m_specmem->space(AS_PROGRAM).install_ram(0x5b00, 0x7fff, m_ram->pointer() + 0x1b00);
+ break;
case 16*1024:
- m_specmem->space(AS_PROGRAM).install_ram(0x5b00, 0x7fff, nullptr);
+ m_specmem->space(AS_PROGRAM).install_ram(0x5b00, 0x7fff, m_ram->pointer() + 0x1b00);
+ break;
}
}