// license:BSD-3-Clause // copyright-holders:Peter Trauner /***************************************************************************** * * sc61860.h * portable sharp 61860 emulator interface * (sharp pocket computers) * * Copyright Peter Trauner, all rights reserved. * *****************************************************************************/ #pragma once #ifndef __SC61860_H__ #define __SC61860_H__ /* official names seam to be ESR-H, ESR-J (ESR-L SC62015 ist complete different) */ /* unsolved problems the processor has 8 kbyte internal rom only readable with special instructions and program execution 64 kb external ram (first 8kbyte 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 }; #define MCFG_SC61860_READ_RESET_HANDLER(_devcb) \ devcb = &sc61860_device::set_reset_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_READ_BRK_HANDLER(_devcb) \ devcb = &sc61860_device::set_brk_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_READ_X_HANDLER(_devcb) \ devcb = &sc61860_device::set_x_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_READ_A_HANDLER(_devcb) \ devcb = &sc61860_device::set_ina_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_WRITE_A_HANDLER(_devcb) \ devcb = &sc61860_device::set_outa_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_READ_B_HANDLER(_devcb) \ devcb = &sc61860_device::set_inb_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_WRITE_B_HANDLER(_devcb) \ devcb = &sc61860_device::set_outb_cb(*device, DEVCB_##_devcb); #define MCFG_SC61860_WRITE_C_HANDLER(_devcb) \ devcb = &sc61860_device::set_outc_cb(*device, DEVCB_##_devcb); class sc61860_device : public cpu_device { public: // construction/destruction sc61860_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // static configuration helpers template static devcb_base &set_reset_cb(device_t &device, _Object object) { return downcast(device).m_reset.set_callback(object); } template static devcb_base &set_brk_cb(device_t &device, _Object object) { return downcast(device).m_brk.set_callback(object); } template static devcb_base &set_x_cb(device_t &device, _Object object) { return downcast(device).m_x.set_callback(object); } template static devcb_base &set_ina_cb(device_t &device, _Object object) { return downcast(device).m_ina.set_callback(object); } template static devcb_base &set_outa_cb(device_t &device, _Object object) { return downcast(device).m_outa.set_callback(object); } template static devcb_base &set_inb_cb(device_t &device, _Object object) { return downcast(device).m_inb.set_callback(object); } template static devcb_base &set_outb_cb(device_t &device, _Object object) { return downcast(device).m_outb.set_callback(object); } template static devcb_base &set_outc_cb(device_t &device, _Object object) { return downcast(device).m_outc.set_callback(object); } /* this is though for power on/off of the sharps */ UINT8 *internal_ram(); TIMER_CALLBACK_MEMBER(sc61860_2ms_tick); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); // device_execute_interface overrides virtual UINT32 execute_min_cycles() const { return 2; } virtual UINT32 execute_max_cycles() const { return 4; } virtual UINT32 execute_input_lines() const { return 0; } virtual void execute_run(); // device_memory_interface overrides virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return (spacenum == AS_PROGRAM) ? &m_program_config : NULL; } // device_state_interface overrides virtual void state_import(const device_state_entry &entry); virtual void state_export(const device_state_entry &entry); void state_string_export(const device_state_entry &entry, std::string &str); // device_disasm_interface overrides virtual UINT32 disasm_min_opcode_bytes() const { return 1; } virtual UINT32 disasm_max_opcode_bytes() const { return 4; } virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options); 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 m_p, m_q, m_r; //7 bits only? UINT8 m_c; // port c, used for HLT. UINT8 m_d, m_h; UINT16 m_oldpc, m_pc, m_dp; int m_carry, m_zero; struct { int t2ms, t512ms; int count; } m_timer; address_space *m_program; direct_read_data *m_direct; int m_icount; UINT8 m_ram[0x100]; // internal special ram, should be 0x60, 0x100 to avoid memory corruption for now UINT32 m_debugger_temp; inline UINT8 READ_OP(); inline UINT8 READ_OP_ARG(); inline UINT16 READ_OP_ARG_WORD(); inline UINT8 READ_BYTE(UINT16 adr); inline void WRITE_BYTE(UINT16 a, UINT8 v); inline UINT8 READ_RAM(int r); inline void WRITE_RAM(int r, UINT8 v); inline void PUSH(UINT8 v); inline UINT8 POP(); inline void sc61860_load_imm(int r, UINT8 v); inline void sc61860_load(); inline void sc61860_load_imm_p(UINT8 v); inline void sc61860_load_imm_q(UINT8 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 value); inline void sc61860_test_ext(); inline void sc61860_and(int reg, UINT8 value); inline void sc61860_and_ext(); inline void sc61860_or(int reg, UINT8 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 value); inline void sc61860_add_carry(); inline void sc61860_add_word(); inline void sc61860_sub(int reg, UINT8 value); inline void sc61860_sub_carry(); inline void sc61860_sub_word(); inline void sc61860_cmp(int reg, UINT8 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 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(); }; extern const device_type SC61860; #endif /* __SC61860_H__ */