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mcs96: Translate first 256 bytes of main memory space to register space

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* dvmemory.cpp: Fix oversight in recent refactoring (uninitialized variable)
This commit is contained in:
AJR 2023-03-19 11:55:06 -04:00
parent f05ea5b7b4
commit 7ccaa1c49e
3 changed files with 12 additions and 0 deletions
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9
src/devices/cpu/mcs96/mcs96.cpp
View File

@ -241,6 +241,15 @@ u16 mcs96_device::any_r16(u16 adr)
return program->read_word(adr);
}
bool mcs96_device::memory_translate(int spacenum, int intention, offs_t &address, address_space *&target_space)
{
if (spacenum == AS_PROGRAM && intention != TR_FETCH && address < 0x100)
target_space = regs;
else
target_space = &space(spacenum);
return true;
}
uint8_t mcs96_device::do_addb(uint8_t v1, uint8_t v2)
{
uint16_t sum = v1+v2;

1
src/devices/cpu/mcs96/mcs96.h
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@ -57,6 +57,7 @@ protected:
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
virtual bool memory_translate(int spacenum, int intention, offs_t &address, address_space *&target_space) override;
// device_state_interface overrides
virtual void state_import(const device_state_entry &entry) override;

2
src/emu/debug/dvmemory.cpp
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@ -868,6 +868,8 @@ bool debug_view_memory::read(u8 size, offs_t offs, u64 &data)
offs_t dummyaddr = offs;
ismapped = source.m_memintf->translate(source.m_space->spacenum(), device_memory_interface::TR_READ, dummyaddr, tspace);
}
else
tspace = source.m_space;
data = ~u64(0);
if (ismapped)
data = m_expression.context().read_memory(*tspace, offs, size, !m_no_translation);