// license:BSD-3-Clause // copyright-holders:Peter Trauner /***************************************************************************** * * sc61860.h * portable sharp 61860 emulator interface * (sharp pocket computers) * * Copyright Peter Trauner, all rights reserved. * *****************************************************************************/ #ifndef MAME_CPU_SC61860_SC61860_H #define MAME_CPU_SC61860_SC61860_H #pragma once /* Official names seem to be: ESR-H, ESR-J (ESR-L SC62015 is completely different) */ /* Known Issues: - The processor has an 8kbyte internal ROM which is only readable with special instructions and program execution. - 64kbyte external RAM (first 8kbytes not seen for program execution?) */ enum { SC61860_PC=1, SC61860_DP, SC61860_P, SC61860_Q, SC61860_R, SC61860_CARRY, SC61860_ZERO, // The following are in the internal RAM! SC61860_BA, SC61860_X, SC61860_Y, SC61860_I, SC61860_J, SC61860_K, SC61860_L, SC61860_V, SC61860_W, SC61860_H // SC61860_NMI_STATE, // SC61860_IRQ_STATE }; class sc61860_device : public cpu_device { public: // construction/destruction sc61860_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); // configuration helpers auto reset_cb() { return m_reset.bind(); } auto brk_cb() { return m_brk.bind(); } auto x_cb() { return m_x.bind(); } auto in_a_cb() { return m_ina.bind(); } auto out_a_cb() { return m_outa.bind(); } auto in_b_cb() { return m_inb.bind(); } auto out_b_cb() { return m_outb.bind(); } auto out_c_cb() { return m_outc.bind(); } /* this is though for power on/off of the sharps */ uint8_t *internal_ram(); TIMER_CALLBACK_MEMBER(sc61860_2ms_tick); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // device_execute_interface overrides virtual uint32_t execute_min_cycles() const noexcept override { return 2; } virtual uint32_t execute_max_cycles() const noexcept override { return 4; } virtual uint32_t execute_input_lines() const noexcept override { return 0; } virtual void execute_run() override; // device_memory_interface overrides virtual space_config_vector memory_space_config() const override; // device_state_interface overrides virtual void state_import(const device_state_entry &entry) override; virtual void state_export(const device_state_entry &entry) override; virtual void state_string_export(const device_state_entry &entry, std::string &str) const override; // device_disasm_interface overrides virtual std::unique_ptr create_disassembler() override; private: address_space_config m_program_config; devcb_read_line m_reset; devcb_read_line m_brk; devcb_read_line m_x; devcb_read8 m_ina; devcb_write8 m_outa; devcb_read8 m_inb; devcb_write8 m_outb; devcb_write8 m_outc; uint8_t m_p, m_q, m_r; //7 bits only? uint8_t m_c; // port c, used for HLT. uint8_t m_d, m_h; uint16_t m_oldpc, m_pc, m_dp; int m_carry, m_zero; struct { int t2ms, t512ms; int count; } m_timer; emu_timer *m_2ms_tick_timer; memory_access<16, 0, 0, ENDIANNESS_BIG>::cache m_cache; memory_access<16, 0, 0, ENDIANNESS_BIG>::specific m_program; int m_icount; uint8_t m_ram[0x100]; // internal special ram, should be 0x60, 0x100 to avoid memory corruption for now uint32_t m_debugger_temp; inline uint8_t READ_OP(); inline uint8_t READ_OP_ARG(); inline uint16_t READ_OP_ARG_WORD(); inline uint8_t READ_BYTE(uint16_t adr); inline void WRITE_BYTE(uint16_t a, uint8_t v); inline uint8_t READ_RAM(int r); inline void WRITE_RAM(int r, uint8_t v); inline void PUSH(uint8_t v); inline uint8_t POP(); inline void sc61860_load_imm(int r, uint8_t v); inline void sc61860_load(); inline void sc61860_load_imm_p(uint8_t v); inline void sc61860_load_imm_q(uint8_t v); inline void sc61860_load_r(); inline void sc61860_load_ext(int r); inline void sc61860_load_dp(); inline void sc61860_load_dl(); inline void sc61860_store_p(); inline void sc61860_store_q(); inline void sc61860_store_r(); inline void sc61860_store_ext(int r); inline void sc61860_exam(int a, int b); inline void sc61860_test(int reg, uint8_t value); inline void sc61860_test_ext(); inline void sc61860_and(int reg, uint8_t value); inline void sc61860_and_ext(); inline void sc61860_or(int reg, uint8_t value); inline void sc61860_or_ext(); inline void sc61860_rotate_right(); inline void sc61860_rotate_left(); inline void sc61860_swap(); inline void sc61860_inc(int reg); inline void sc61860_inc_p(); inline void sc61860_dec(int reg); inline void sc61860_dec_p(); inline void sc61860_add(int reg, uint8_t value); inline void sc61860_add_carry(); inline void sc61860_add_word(); inline void sc61860_sub(int reg, uint8_t value); inline void sc61860_sub_carry(); inline void sc61860_sub_word(); inline void sc61860_cmp(int reg, uint8_t value); inline void sc61860_pop(); inline void sc61860_push(); inline void sc61860_prepare_table_call(); inline void sc61860_execute_table_call(); inline void sc61860_call(uint16_t adr); inline void sc61860_return(); inline void sc61860_jump(int yes); inline void sc61860_jump_rel_plus(int yes); inline void sc61860_jump_rel_minus(int yes); inline void sc61860_loop(); inline void sc61860_leave(); inline void sc61860_wait(); inline void sc61860_set_carry(); inline void sc61860_reset_carry(); inline void sc61860_out_a(); inline void sc61860_out_b(); inline void sc61860_out_f(); inline void sc61860_out_c(); inline void sc61860_in_a(); inline void sc61860_in_b(); inline void sc61860_test_special(); inline void sc61860_add_bcd_a(); inline void sc61860_add_bcd(); inline void sc61860_sub_bcd_a(); inline void sc61860_sub_bcd(); inline void sc61860_shift_left_nibble(); inline void sc61860_shift_right_nibble(); inline void sc61860_inc_load_dp(int reg); inline void sc61860_dec_load_dp(int reg); inline void sc61860_inc_load_dp_load(); inline void sc61860_dec_load_dp_load(); inline void sc61860_inc_load_dp_store(); inline void sc61860_dec_load_dp_store(); inline void sc61860_fill(); inline void sc61860_fill_ext(); inline void sc61860_copy(int count); inline void sc61860_copy_ext(int count); inline void sc61860_copy_int(int count); inline void sc61860_exchange(int count); inline void sc61860_exchange_ext(int count); inline void sc61860_wait_x(int level); void sc61860_instruction(); }; DECLARE_DEVICE_TYPE(SC61860, sc61860_device) #endif // MAME_CPU_SC61860_SC61860_H