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Diffstat (limited to 'src/devices/cpu/sm510/sm511core.cpp')
-rw-r--r-- | src/devices/cpu/sm510/sm511core.cpp | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/src/devices/cpu/sm510/sm511core.cpp b/src/devices/cpu/sm510/sm511core.cpp deleted file mode 100644 index c7a26de07e2..00000000000 --- a/src/devices/cpu/sm510/sm511core.cpp +++ /dev/null @@ -1,269 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:hap -/* - - Sharp SM511 MCU core implementation - - TODO: - - verify undocumented/guessed opcodes: - * $01 is guessed as DIV to ACC transfer, unknown which bits - * $5d is certainly CEND - * $65 is certainly divider reset, but not sure if it behaves same as on SM510 - * $6036 and $6037 may be instruction timing? (16kHz and 8kHz), mnemonics unknown - -*/ - -#include "emu.h" -#include "sm510.h" -#include "sm510d.h" -#include "debugger.h" - - -// MCU types -DEFINE_DEVICE_TYPE(SM511, sm511_device, "sm511", "Sharp SM511") // 4Kx8 ROM, 128x4 RAM(32x4 for LCD), melody controller -DEFINE_DEVICE_TYPE(SM512, sm512_device, "sm512", "Sharp SM512") // 4Kx8 ROM, 128x4 RAM(48x4 for LCD), melody controller - - -// internal memory maps -void sm511_device::program_4k(address_map &map) -{ - map(0x0000, 0x0fff).rom(); -} - -void sm511_device::data_96_32x4(address_map &map) -{ - map(0x00, 0x5f).ram(); - map(0x60, 0x6f).ram().share("lcd_ram_a"); - map(0x70, 0x7f).ram().share("lcd_ram_b"); -} - -void sm512_device::data_80_48x4(address_map &map) -{ - map(0x00, 0x4f).ram(); - map(0x50, 0x5f).ram().share("lcd_ram_c"); - map(0x60, 0x6f).ram().share("lcd_ram_a"); - map(0x70, 0x7f).ram().share("lcd_ram_b"); -} - - -// disasm -std::unique_ptr<util::disasm_interface> sm511_device::create_disassembler() -{ - return std::make_unique<sm511_disassembler>(); -} - - -// device definitions -sm511_device::sm511_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : - sm511_device(mconfig, SM511, tag, owner, clock, 2 /* stack levels */, 12 /* prg width */, address_map_constructor(FUNC(sm511_device::program_4k), this), 7 /* data width */, address_map_constructor(FUNC(sm511_device::data_96_32x4), this)) -{ } - -sm511_device::sm511_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, int stack_levels, 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) -{ } - -sm512_device::sm512_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : - sm511_device(mconfig, SM512, tag, owner, clock, 2, 12, address_map_constructor(FUNC(sm512_device::program_4k), this), 7, address_map_constructor(FUNC(sm512_device::data_80_48x4), this)) -{ } - - - -//------------------------------------------------- -// device_reset - device-specific reset -//------------------------------------------------- - -void sm511_device::device_reset() -{ - sm510_base_device::device_reset(); - - m_melody_rd &= ~1; - m_clk_div = 4; // 8kHz - notify_clock_changed(); -} - - - -//------------------------------------------------- -// melody controller -//------------------------------------------------- - -void sm511_device::clock_melody() -{ - if (!m_melody_rom) - return; - - // tone cycle table (SM511/SM512 datasheet fig.5) - // cmd 0 = rest, 1 = stop, > 13 = illegal(inactive?) - static const u8 lut_tone_cycles[4*16] = - { - 0, 0, 7, 8, 8, 9, 9, 10,11,11,12,13,14,14, 0, 0, - 0, 0, 8, 8, 9, 9, 10,11,11,12,13,13,14,15, 0, 0, - 0, 0, 8, 8, 9, 9, 10,10,11,12,12,13,14,15, 0, 0, - 0, 0, 8, 9, 9, 10,10,11,11,12,13,14,14,15, 0, 0, - }; - - u8 cmd = m_melody_rom[m_melody_address] & 0x3f; - u8 out = 0; - - // clock duty cycle if tone is active - if ((cmd & 0xf) >= 2 && (cmd & 0xf) <= 13) - { - out = m_melody_duty_index & m_melody_rd & 1; - m_melody_duty_count++; - int index = m_melody_duty_index << 4 | (cmd & 0xf); - int shift = ~cmd >> 4 & 1; // OCT - - if (m_melody_duty_count >= (lut_tone_cycles[index] << shift)) - { - m_melody_duty_count = 0; - m_melody_duty_index = (m_melody_duty_index + 1) & 3; - } - } - else if ((cmd & 0xf) == 1) - { - // set melody stop flag - m_melody_rd |= 2; - } - - // clock time base on F8(d7) - if ((m_div & 0x7f) == 0) - { - u8 mask = (cmd & 0x20) ? 0x1f : 0x0f; - m_melody_step_count = (m_melody_step_count + 1) & mask; - - if (m_melody_step_count == 0) - m_melody_address++; - } - - // output to R pin - if (out != m_r_out) - { - m_write_r(0, out, 0xff); - m_r_out = out; - } -} - -void sm511_device::init_melody() -{ - if (!m_melody_rom) - return; - - // verify melody rom - for (int i = 0; i < 0x100; i++) - { - u8 data = m_melody_rom[i]; - if (data & 0xc0 || (data & 0x0f) > 13) - logerror("%s unknown melody ROM data $%02X at $%02X\n", tag(), data, i); - } -} - - - -//------------------------------------------------- -// execute -//------------------------------------------------- - -void sm511_device::get_opcode_param() -{ - // LBL, PRE, TL, TML and prefix opcodes are 2 bytes - if ((m_op >= 0x5f && m_op <= 0x61) || (m_op & 0xf0) == 0x70 || (m_op & 0xfc) == 0x68) - { - m_icount--; - m_param = m_program->read_byte(m_pc); - increment_pc(); - } -} - -void sm511_device::execute_one() -{ - switch (m_op & 0xf0) - { - case 0x20: op_lax(); break; - case 0x30: op_adx(); break; - case 0x40: op_lb(); break; - case 0x70: op_tl(); break; - - case 0x80: case 0x90: case 0xa0: case 0xb0: - op_t(); break; - case 0xc0: case 0xd0: case 0xe0: case 0xf0: - op_tm(); 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; - case 0x68: op_tml(); break; - - default: - switch (m_op) - { - case 0x00: op_rot(); break; - case 0x01: op_dta(); break; - case 0x02: op_sbm(); break; - case 0x03: op_atpl(); break; - case 0x08: op_add(); break; - case 0x09: op_add11(); break; - case 0x0a: op_coma(); break; - case 0x0b: op_exbla(); break; - - case 0x50: op_kta(); break; - case 0x51: op_tb(); break; - case 0x52: op_tc(); break; - case 0x53: op_tam(); break; - case 0x58: op_tis(); break; - case 0x59: op_atl(); break; - case 0x5a: op_ta0(); break; - case 0x5b: op_tabl(); break; - case 0x5c: op_atx(); break; - case 0x5d: op_cend(); break; - case 0x5e: op_tal(); break; - case 0x5f: op_lbl(); break; - - case 0x61: op_pre(); break; - case 0x62: op_wr(); break; - case 0x63: op_ws(); break; - case 0x64: op_incb(); break; - case 0x65: op_dr(); break; - case 0x66: op_rc(); break; - case 0x67: op_sc(); break; - case 0x6c: op_decb(); break; - case 0x6d: op_ptw(); break; - case 0x6e: op_rtn0(); break; - case 0x6f: op_rtn1(); break; - - // extended opcodes - case 0x60: - m_op = m_op << 8 | m_param; - switch (m_param) - { - case 0x30: op_rme(); break; - case 0x31: op_sme(); break; - case 0x32: op_tmel(); break; - case 0x33: op_atfc(); break; - case 0x34: op_bdc(); break; - case 0x35: op_atbp(); break; - case 0x36: op_clkhi(); break; - case 0x37: op_clklo(); break; - - default: op_illegal(); break; - } - break; // 0x60 - - default: op_illegal(); break; - } - break; // 0xff - - } - break; // 0xfc - - } // big switch - - // BM high bit is only valid for 1 step - m_sbm = (m_op == 0x02); -} |