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Diffstat (limited to 'src/devices/cpu/sm510/sm500core.cpp')
-rw-r--r-- | src/devices/cpu/sm510/sm500core.cpp | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/src/devices/cpu/sm510/sm500core.cpp b/src/devices/cpu/sm510/sm500core.cpp deleted file mode 100644 index 8396d8e3107..00000000000 --- a/src/devices/cpu/sm510/sm500core.cpp +++ /dev/null @@ -1,250 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:hap -/* - - Sharp SM500 MCU core implementation - - TODO: - - EXKSA, EXKFA opcodes - - unknown which O group is which W output, guessed for now (segments and H should be ok) - -*/ - -#include "emu.h" -#include "sm500.h" -#include "sm510d.h" -#include "debugger.h" - - -// MCU types -DEFINE_DEVICE_TYPE(SM500, sm500_device, "sm500", "Sharp SM500") // 1.2K ROM, 4x10x4 RAM, shift registers for LCD - - -// internal memory maps -void sm500_device::program_1_2k(address_map &map) -{ - map(0x000, 0x4bf).rom(); -} - -void sm500_device::data_4x10x4(address_map &map) -{ - map(0x00, 0x09).ram(); - map(0x10, 0x19).ram(); - map(0x20, 0x29).ram(); - map(0x30, 0x39).ram(); -} - - -// device definitions -sm500_device::sm500_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : - sm500_device(mconfig, SM500, tag, owner, clock, 1 /* stack levels */, 7 /* o group pins */, 11 /* prg width */, address_map_constructor(FUNC(sm500_device::program_1_2k), this), 6 /* data width */, address_map_constructor(FUNC(sm500_device::data_4x10x4), this)) -{ } - -sm500_device::sm500_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, int stack_levels, int o_pins, int prgwidth, address_map_constructor program, int datawidth, address_map_constructor data) : - sm510_base_device(mconfig, type, tag, owner, clock, stack_levels, prgwidth, program, datawidth, data), - m_o_pins(o_pins) -{ } - - -// disasm -std::unique_ptr<util::disasm_interface> sm500_device::create_disassembler() -{ - return std::make_unique<sm500_disassembler>(); -} - - -//------------------------------------------------- -// device_start - device-specific startup -//------------------------------------------------- - -void sm500_device::device_start() -{ - // common init (not everything is used though) - sm510_base_device::device_start(); - - // init/zerofill - memset(m_ox, 0, sizeof(m_ox)); - memset(m_o, 0, sizeof(m_o)); - m_cn = 0; - m_mx = 0; - m_cb = 0; - m_s = 0; - m_rsub = false; - - // register for savestates - save_item(NAME(m_ox)); - save_item(NAME(m_o)); - save_item(NAME(m_cn)); - save_item(NAME(m_mx)); - save_item(NAME(m_cb)); - save_item(NAME(m_s)); - save_item(NAME(m_rsub)); -} - - - -//------------------------------------------------- -// device_reset - device-specific reset -//------------------------------------------------- - -void sm500_device::device_reset() -{ - // common reset - sm510_base_device::device_reset(); - - // SM500 specific - push_stack(); - op_idiv(); - m_1s = true; - m_cb = 0; - m_rsub = false; - m_r = 0xf; -} - - - -//------------------------------------------------- -// lcd driver -//------------------------------------------------- - -void sm500_device::lcd_update() -{ - // 2 columns - for (int h = 0; h < 2; h++) - { - for (int o = 0; o < m_o_pins; o++) - { - // 4 segments per group - u8 seg = h ? m_ox[o] : m_o[o]; - m_write_segs(o << 1 | h, m_bp ? seg : 0, 0xffff); - } - } -} - - - -//------------------------------------------------- -// buzzer controller -//------------------------------------------------- - -void sm500_device::clock_melody() -{ - // R1 from divider or direct control, R2-R4 generic outputs - u8 mask = (m_r_mask_option == RMASK_DIRECT) ? 1 : (m_div >> m_r_mask_option & 1); - u8 out = (mask & ~m_r) | (~m_r & 0xe); - - // output to R pins - if (out != m_r_out) - { - m_write_r(0, out, 0xff); - m_r_out = out; - } -} - - - -//------------------------------------------------- -// execute -//------------------------------------------------- - -void sm500_device::get_opcode_param() -{ - // LBL and prefix opcodes are 2 bytes - if (m_op == 0x5e || m_op == 0x5f) - { - m_icount--; - m_param = m_program->read_byte(m_pc); - increment_pc(); - } -} - -void sm500_device::execute_one() -{ - switch (m_op & 0xf0) - { - case 0x20: op_lax(); break; - case 0x30: - if (m_op == 0x30) op_ats(); // ! - else op_adx(); - break; - case 0x40: op_lb(); break; - case 0x70: op_ssr(); break; - - case 0x80: case 0x90: case 0xa0: case 0xb0: - op_tr(); break; - case 0xc0: case 0xd0: case 0xe0: case 0xf0: - op_trs(); break; - - default: - switch (m_op & 0xfc) - { - case 0x04: op_rm(); break; - case 0x0c: op_sm(); break; - case 0x10: op_exc(); break; - case 0x14: op_exci(); break; - case 0x18: op_lda(); break; - case 0x1c: op_excd(); break; - case 0x54: op_tmi(); break; // TM - - default: - switch (m_op) - { - case 0x00: op_skip(); break; - case 0x01: op_atr(); break; - case 0x02: op_exksa(); break; - case 0x03: op_atbp(); break; - case 0x08: op_add(); break; - case 0x09: op_add11(); break; // ADDC - case 0x0a: op_coma(); break; - case 0x0b: op_exbla(); break; - - case 0x50: op_tal(); break; // TA - case 0x51: op_tb(); break; - case 0x52: op_tc(); break; - case 0x53: op_tam(); break; - case 0x58: op_tis(); break; // TG - case 0x59: op_ptw(); break; - case 0x5a: op_ta0(); break; - case 0x5b: op_tabl(); break; - case 0x5c: op_tw(); break; - case 0x5d: op_dtw(); break; - case 0x5f: op_lbl(); break; - - case 0x60: op_comcn(); break; - case 0x61: op_pdtw(); break; - case 0x62: op_wr(); break; - case 0x63: op_ws(); break; - case 0x64: op_incb(); break; - case 0x65: op_idiv(); break; - case 0x66: op_rc(); break; - case 0x67: op_sc(); break; - case 0x68: op_rmf(); break; - case 0x69: op_smf(); break; - case 0x6a: op_kta(); break; - case 0x6b: op_exkfa(); break; - case 0x6c: op_decb(); break; - case 0x6d: op_comcb(); break; - case 0x6e: op_rtn0(); break; // RTN - case 0x6f: op_rtn1(); break; // RTNS - - // extended opcodes - case 0x5e: - m_op = m_op << 8 | m_param; - switch (m_param) - { - case 0x00: op_cend(); break; - case 0x04: op_dta(); break; - - default: op_illegal(); break; - } - break; // 0x5e - - default: op_illegal(); break; - } - break; // 0xff - - } - break; // 0xfc - - } // big switch -} |