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Diffstat (limited to 'src/devices/cpu/alpha/alpha.h')
-rw-r--r-- | src/devices/cpu/alpha/alpha.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/devices/cpu/alpha/alpha.h b/src/devices/cpu/alpha/alpha.h new file mode 100644 index 00000000000..a4d66e806c7 --- /dev/null +++ b/src/devices/cpu/alpha/alpha.h @@ -0,0 +1,56 @@ +// license:BSD-3-Clause +// copyright-holders:Patrick Mackinlay + +#ifndef MAME_CPU_ALPHA_ALPHA_H +#define MAME_CPU_ALPHA_ALPHA_H + +#pragma once + +#include <limits.h> +#include "softfloat/milieu.h" +#include "softfloat/softfloat.h" + +class alpha_device : public cpu_device +{ +public: + +protected: + alpha_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock); + + // device-level overrides + virtual void device_start() override; + virtual void device_reset() override; + + // device_execute_interface overrides + virtual u32 execute_min_cycles() const override { return 1; } + virtual u32 execute_max_cycles() const override { return 1; } + virtual u32 execute_input_lines() const override { return 6; } + virtual void execute_run() override; + virtual void execute_set_input(int inputnum, int state) override; + + // device_memory_interface overrides + virtual space_config_vector memory_space_config() const override; + virtual bool memory_translate(int spacenum, int intention, offs_t &address) override; + + // device_disasm_interface overrides + virtual std::unique_ptr<util::disasm_interface> create_disassembler() override; + +private: + // emulation state + address_space_config m_main_config; + int m_icount; + + u64 m_pc; + u64 m_r[32]; // R31 is zero + u64 m_f[32]; // F31 is zero +}; + +class dec_21064_device : public alpha_device +{ +public: + dec_21064_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); +}; + +DECLARE_DEVICE_TYPE(DEC_21064, dec_21064_device) + +#endif // MAME_CPU_ALPHA_ALPHA_H |