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r4000: physical address space is 36 bits

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This commit is contained in:
Patrick Mackinlay 2021-04-01 18:06:31 +07:00
parent b44de86569
commit 1dbaaae999
2 changed files with 4 additions and 5 deletions
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6
src/devices/cpu/mips/r4000.h
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@ -17,7 +17,7 @@ public:
enum config_mask : u32
{
CONFIG_K0 = 0x00000007, // kseg0 cache coherency
CONFIG_CU = 0x00000080, // store conditional cache coherent
CONFIG_CU = 0x00000008, // store conditional cache coherent
CONFIG_DB = 0x00000010, // primary d-cache line 32 bytes
CONFIG_IB = 0x00000020, // primary i-cache line 32 bytes
CONFIG_DC = 0x000001c0, // primary d-cache size
@ -388,8 +388,8 @@ protected:
address_space_config m_program_config_be;
// memory access helpers
memory_access<64, 3, 0, ENDIANNESS_LITTLE>::cache m_le;
memory_access<64, 3, 0, ENDIANNESS_BIG>::cache m_be;
memory_access<36, 3, 0, ENDIANNESS_LITTLE>::cache m_le;
memory_access<36, 3, 0, ENDIANNESS_BIG>::cache m_be;
std::function<u8(offs_t offset)> read_byte;
std::function<u16(offs_t offset)> read_word;

3
src/mame/drivers/jazz.cpp
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@ -282,8 +282,7 @@ static void jazz_scsi_devices(device_slot_interface &device)
void jazz_state::jazz(machine_config &config)
{
// FIXME: slow the cpu clock to get past session manager bugcheck
R4000(config, m_cpu, 50_MHz_XTAL / 5);
R4000(config, m_cpu, 50_MHz_XTAL);
m_cpu->set_addrmap(0, &jazz_state::cpu_map);
RAM(config, m_ram);