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Diffstat (limited to 'src/devices/cpu/mipsx/mipsx.cpp')
-rw-r--r--src/devices/cpu/mipsx/mipsx.cpp62
1 files changed, 62 insertions, 0 deletions
diff --git a/src/devices/cpu/mipsx/mipsx.cpp b/src/devices/cpu/mipsx/mipsx.cpp
new file mode 100644
index 00000000000..72e45f84d1a
--- /dev/null
+++ b/src/devices/cpu/mipsx/mipsx.cpp
@@ -0,0 +1,62 @@
+// license:BSD-3-Clause
+// copyright-holders:David Haywood
+
+// https://apps.dtic.mil/sti/tr/pdf/ADA181619.pdf
+
+#include "emu.h"
+#include "mipsx.h"
+#include "mipsxdasm.h"
+
+DEFINE_DEVICE_TYPE(MIPSX, mipsx_cpu_device, "mipsx", "MIPS-X")
+
+mipsx_cpu_device::mipsx_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : cpu_device(mconfig, MIPSX, tag, owner, clock)
+ , m_program_config("program", ENDIANNESS_BIG, 32, 24, 0)
+ , m_pc(0)
+ , m_program(nullptr)
+ , m_icount(0)
+{
+}
+
+std::unique_ptr<util::disasm_interface> mipsx_cpu_device::create_disassembler()
+{
+ return std::make_unique<mipsx_disassembler>();
+}
+
+/*****************************************************************************/
+
+device_memory_interface::space_config_vector mipsx_cpu_device::memory_space_config() const
+{
+ return space_config_vector {
+ std::make_pair(AS_PROGRAM, &m_program_config)
+ };
+}
+
+
+/*****************************************************************************/
+
+void mipsx_cpu_device::device_start()
+{
+ m_program = &space(AS_PROGRAM);
+
+ state_add(STATE_GENPC, "GENPC", m_pc).formatstr("%08X");
+ state_add(STATE_GENPCBASE, "CURPC", m_pc).callexport().noshow();
+
+ set_icountptr(m_icount);
+}
+
+void mipsx_cpu_device::device_reset()
+{
+}
+
+/*****************************************************************************/
+
+void mipsx_cpu_device::execute_run()
+{
+ while (m_icount > 0)
+ {
+ debugger_instruction_hook(m_pc);
+ m_pc += 4;
+ m_icount--;
+ }
+}