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https://github.com/holub/mame
synced 2025-06-25 22:04:15 +03:00
ucom4 skeleton opcode handlers
This commit is contained in:
hap
parent
2756a23b1a
commit
c34536b285
@ -306,10 +306,11 @@ void amis2000_device::execute_run()
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case 0x48: op_lbe(); break;
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case 0x4c: op_lbep(); break;
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}
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break;
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break; // 0xfc
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}
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break;
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break; // 0xff
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} // big switch
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}
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}
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@ -388,13 +388,13 @@ void amis2000_device::op_szk()
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void amis2000_device::op_sbe()
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{
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// SBE: skip next on BL equ E
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// SBE: skip next on BL equals E
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m_skip = (m_bl == m_e);
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}
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void amis2000_device::op_sam()
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{
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// SAM: skip next on ACC equ RAM
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// SAM: skip next on ACC equals RAM
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m_skip = (m_acc == ram_r());
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}
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@ -421,7 +421,7 @@ void amis2000_device::op_tf2()
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void amis2000_device::op_adcs()
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{
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// ADCS: add RAM to ACC+carry, skip next on no carry
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// ADCS: add RAM to ACC+carry, skip next on not carry
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m_acc += ram_r() + m_carry;
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m_carry = m_acc >> 4 & 1;
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m_skip = !m_carry;
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@ -430,7 +430,7 @@ void amis2000_device::op_adcs()
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void amis2000_device::op_adis()
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{
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// ADIS X: add X to ACC, skip next on no carry
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// ADIS X: add X to ACC, skip next on not carry
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UINT8 param = m_op & 0x0f;
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m_acc += param;
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m_skip = !(m_acc >> 4 & 1);
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@ -7,20 +7,34 @@
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reference: 1981 NEC Microcomputers Catalog (later editions may have errors!)
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also looked at asterick's JavaScript D553 emulator for verification, with permission
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TODO:
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- what happens with uCOM-43 opcodes on an uCOM-44/45 MCU?
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*/
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enum
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{
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NEC_UCOM43 = 0,
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NEC_UCOM44,
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NEC_UCOM45
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};
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#include "ucom4.h"
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#include "debugger.h"
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#include "ucom4op.inc"
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// uCOM-43 products
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const device_type NEC_D553 = &device_creator<upd553_cpu_device>; // 42-pin PMOS, 35 pins for I/O, Open Drain output, 2000x8 ROM, 96x4 RAM
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const device_type NEC_D650 = &device_creator<upd650_cpu_device>; // 42-pin CMOS, 35 pins for I/O, push-pull output, 2000x8 ROM, 96x4 RAM
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// uCOM-43 products: 2000x8 ROM, RAM size custom, supports full instruction set
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const device_type NEC_D553 = &device_creator<upd553_cpu_device>; // 42-pin PMOS, 35 pins for I/O, Open Drain output, 96x4 RAM
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const device_type NEC_D650 = &device_creator<upd650_cpu_device>; // 42-pin CMOS, 35 pins for I/O, push-pull output, 96x4 RAM
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// uCOM-44 products: 1000x8 ROM, 64x4 RAM, does not support external interrupt
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const device_type NEC_D552 = &device_creator<upd552_cpu_device>; // 42-pin PMOS, 35 pins for I/O, Open Drain output
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// uCOM-45 products: ROM size custom, 32x4 RAM
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//..
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// uCOM-44 products
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const device_type NEC_D552 = &device_creator<upd552_cpu_device>; // 42-pin PMOS, 35 pins for I/O, Open Drain output, 1000x8 ROM, 64x4 RAM
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// internal memory maps
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static ADDRESS_MAP_START(program_1k, AS_PROGRAM, 8, ucom4_cpu_device)
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@ -44,15 +58,15 @@ ADDRESS_MAP_END
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// device definitions
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upd553_cpu_device::upd553_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: ucom4_cpu_device(mconfig, NEC_D553, "uPD553", tag, owner, clock, 3, 11, ADDRESS_MAP_NAME(program_2k), 7, ADDRESS_MAP_NAME(data_96x4), "upd553", __FILE__)
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: ucom4_cpu_device(mconfig, NEC_D553, "uPD553", tag, owner, clock, NEC_UCOM43, 3, 11, ADDRESS_MAP_NAME(program_2k), 7, ADDRESS_MAP_NAME(data_96x4), "upd553", __FILE__)
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{ }
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upd650_cpu_device::upd650_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: ucom4_cpu_device(mconfig, NEC_D650, "uPD650", tag, owner, clock, 3, 11, ADDRESS_MAP_NAME(program_2k), 7, ADDRESS_MAP_NAME(data_96x4), "upd650", __FILE__)
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: ucom4_cpu_device(mconfig, NEC_D650, "uPD650", tag, owner, clock, NEC_UCOM43, 3, 11, ADDRESS_MAP_NAME(program_2k), 7, ADDRESS_MAP_NAME(data_96x4), "upd650", __FILE__)
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{ }
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upd552_cpu_device::upd552_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: ucom4_cpu_device(mconfig, NEC_D552, "uPD552", tag, owner, clock, 1, 10, ADDRESS_MAP_NAME(program_1k), 6, ADDRESS_MAP_NAME(data_64x4), "upd552", __FILE__)
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: ucom4_cpu_device(mconfig, NEC_D552, "uPD552", tag, owner, clock, NEC_UCOM44, 1, 10, ADDRESS_MAP_NAME(program_1k), 6, ADDRESS_MAP_NAME(data_64x4), "upd552", __FILE__)
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{ }
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@ -64,11 +78,11 @@ void ucom4_cpu_device::state_string_export(const device_state_entry &entry, astr
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// obviously not from a single flags register
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case STATE_GENFLAGS:
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string.printf("%c%c%c%c%c",
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m_inte_f ? 'E':'e',
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m_int_f ? 'I':'i',
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m_timer_f ? 'T':'t',
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m_carry_s ? 'S':'s',
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m_carry_f ? 'C':'c'
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m_inte_f ? 'E':'e',
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m_int_f ? 'I':'i',
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m_timer_f ? 'T':'t',
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m_carry_s_f ? 'S':'s',
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m_carry_f ? 'C':'c'
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);
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break;
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@ -118,12 +132,14 @@ void ucom4_cpu_device::device_start()
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memset(m_stack, 0, sizeof(m_stack));
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m_op = 0;
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m_prev_op = 0;
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m_arg = 0;
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m_skip = false;
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m_pc = 0;
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m_acc = 0;
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m_dpl = 0;
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m_dph = 0;
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m_carry_f = 0;
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m_carry_s = 0;
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m_carry_s_f = 0;
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m_timer_f = 0;
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m_int_f = 0;
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m_inte_f = 0;
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@ -132,12 +148,14 @@ void ucom4_cpu_device::device_start()
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save_item(NAME(m_stack));
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save_item(NAME(m_op));
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save_item(NAME(m_prev_op));
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save_item(NAME(m_arg));
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save_item(NAME(m_skip));
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save_item(NAME(m_pc));
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save_item(NAME(m_acc));
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save_item(NAME(m_dpl));
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save_item(NAME(m_dph));
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save_item(NAME(m_carry_f));
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save_item(NAME(m_carry_s));
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save_item(NAME(m_carry_s_f));
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save_item(NAME(m_timer_f));
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save_item(NAME(m_int_f));
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save_item(NAME(m_inte_f));
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@ -165,6 +183,7 @@ void ucom4_cpu_device::device_reset()
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m_inte_f = 1;
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m_pc = 0;
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m_op = 0;
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m_skip = false;
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}
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@ -173,17 +192,134 @@ void ucom4_cpu_device::device_reset()
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// execute
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//-------------------------------------------------
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void ucom4_cpu_device::fetch_arg()
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{
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// 2-byte opcodes: STM/LDI/CLI/CI, JMP/CAL, OCD
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if ((m_op & 0xfc) == 0x14 || (m_op & 0xf0) == 0xa0 || m_op == 0x1e)
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{
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m_icount--;
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m_arg = m_program->read_byte(m_pc);
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m_pc = (m_pc + 1) & m_prgmask;
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}
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}
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void ucom4_cpu_device::execute_run()
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{
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while (m_icount > 0)
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{
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m_icount--;
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// remember previous opcode
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m_prev_op = m_op;
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debugger_instruction_hook(this, m_pc);
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m_op = m_program->read_byte(m_pc);
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m_pc = (m_pc + 1) & m_prgmask;
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fetch_arg();
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if (m_skip)
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{
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m_skip = false;
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continue;
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}
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switch (m_op & 0xf0)
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{
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case 0x80: op_ldz(); break;
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case 0x90: op_li(); break;
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case 0xa0: op_jmpcal(); break;
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case 0xb0: op_czp(); break;
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case 0xc0: case 0xd0: case 0xe0: case 0xf0: op_jcp(); break;
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default:
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switch (m_op)
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{
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case 0x00: op_nop(); break;
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case 0x01: op_di(); break;
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case 0x02: op_s(); break;
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case 0x03: op_tit(); break;
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case 0x04: op_tc(); break;
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case 0x05: op_ttm(); break;
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case 0x06: op_daa(); break;
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case 0x07: op_tal(); break;
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case 0x08: op_ad(); break;
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case 0x09: op_ads(); break;
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case 0x0a: op_das(); break;
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case 0x0b: op_clc(); break;
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case 0x0c: op_cm(); break;
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case 0x0d: op_inc(); break;
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case 0x0e: op_op(); break;
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case 0x0f: op_dec(); break;
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case 0x10: op_cma(); break;
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case 0x11: op_cia(); break;
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case 0x12: op_tla(); break;
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case 0x13: op_ded(); break;
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case 0x14: op_stm(); break;
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case 0x15: op_ldi(); break;
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case 0x16: op_cli(); break;
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case 0x17: op_ci(); break;
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case 0x18: op_exl(); break;
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case 0x19: op_adc(); break;
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case 0x1a: op_xc(); break;
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case 0x1b: op_stc(); break;
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case 0x1c: op_illegal(); break;
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case 0x1d: op_inm(); break;
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case 0x1e: op_ocd(); break;
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case 0x1f: op_dem(); break;
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case 0x30: op_rar(); break;
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case 0x31: op_ei(); break;
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case 0x32: op_ip(); break;
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case 0x33: op_ind(); break;
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case 0x40: op_ia(); break;
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case 0x41: op_jpa(); break;
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case 0x42: op_taz(); break;
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case 0x43: op_taw(); break;
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case 0x44: op_oe(); break;
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case 0x45: op_illegal(); break;
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case 0x46: op_tly(); break;
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case 0x47: op_thx(); break;
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case 0x48: op_rt(); break;
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case 0x49: op_rts(); break;
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case 0x4a: op_xaz(); break;
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case 0x4b: op_xaw(); break;
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case 0x4c: op_xls(); break;
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case 0x4d: op_xhr(); break;
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case 0x4e: op_xly(); break;
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case 0x4f: op_xhx(); break;
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default:
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switch (m_op & 0xfc)
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{
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case 0x20: op_fbf(); break;
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case 0x24: op_tab(); break;
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case 0x28: op_xm(); break;
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case 0x2c: op_xmd(); break;
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case 0x34: op_cmb(); break;
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case 0x38: op_lm(); break;
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case 0x3c: op_xmi(); break;
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case 0x50: op_tpb(); break;
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case 0x54: op_tpa(); break;
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case 0x58: op_tmb(); break;
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case 0x5c: op_fbt(); break;
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case 0x60: op_rpb(); break;
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case 0x64: op_reb(); break;
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case 0x68: op_rmb(); break;
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case 0x6c: op_rfb(); break;
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case 0x70: op_spb(); break;
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case 0x74: op_seb(); break;
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case 0x78: op_smb(); break;
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case 0x7c: op_sfb(); break;
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}
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break; // 0xfc
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}
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break; // 0xff
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} // big switch
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}
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}
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@ -50,12 +50,13 @@ class ucom4_cpu_device : public cpu_device
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{
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public:
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// construction/destruction
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ucom4_cpu_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, int stack_levels, int prgwidth, address_map_constructor program, int datawidth, address_map_constructor data, const char *shortname, const char *source)
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ucom4_cpu_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, int family, int stack_levels, int prgwidth, address_map_constructor program, int datawidth, address_map_constructor data, const char *shortname, const char *source)
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: cpu_device(mconfig, type, name, tag, owner, clock, shortname, source)
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, m_program_config("program", ENDIANNESS_BIG, 8, prgwidth, 0, program)
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, m_data_config("data", ENDIANNESS_BIG, 8, datawidth, 0, data)
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, m_prgwidth(prgwidth)
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, m_datawidth(datawidth)
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, m_family(family)
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, m_stack_levels(stack_levels)
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, m_read_a(*this)
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, m_read_b(*this)
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@ -94,6 +95,8 @@ protected:
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virtual UINT32 execute_max_cycles() const { return 2; }
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virtual UINT32 execute_input_lines() const { return 1; }
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virtual void execute_run();
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void fetch_arg();
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// device_memory_interface overrides
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virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return(spacenum == AS_PROGRAM) ? &m_program_config :((spacenum == AS_DATA) ? &m_data_config : NULL); }
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@ -102,6 +105,7 @@ protected:
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virtual UINT32 disasm_min_opcode_bytes() const { return 1; }
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virtual UINT32 disasm_max_opcode_bytes() const { return 2; }
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virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options);
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void state_string_export(const device_state_entry &entry, astring &string);
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address_space_config m_program_config;
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@ -113,11 +117,13 @@ protected:
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int m_datawidth;
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int m_prgmask;
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int m_datamask;
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int m_family; // MCU family (43/44/45)
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int m_stack_levels; // number of callstack levels
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UINT16 m_stack[3]; // max 3
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UINT8 m_op;
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UINT8 m_prev_op;
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UINT8 m_prev_op; // previous opcode
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UINT8 m_arg; // opcode argument for 2-byte opcodes
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bool m_skip; // skip next opcode
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int m_icount;
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UINT16 m_pc; // program counter
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@ -125,7 +131,7 @@ protected:
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UINT8 m_dpl; // 4-bit data pointer low (RAM x)
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UINT8 m_dph; // 1/2/3-bit data pointer high (RAM y)
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UINT8 m_carry_f; // carry flag
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UINT8 m_carry_s; // carry save
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UINT8 m_carry_s_f; // carry save flag
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UINT8 m_timer_f; // timer out flag
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UINT8 m_int_f; // interrupt flag
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UINT8 m_inte_f; // interrupt enable flag
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@ -143,6 +149,92 @@ protected:
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devcb_write8 m_write_g;
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devcb_write8 m_write_h;
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devcb_write8 m_write_i;
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// opcode handlers
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void op_illegal();
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bool check_op_43();
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void op_li();
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void op_lm();
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void op_ldi();
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void op_ldz();
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void op_s();
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void op_tal();
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void op_tla();
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void op_xm();
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void op_xmi();
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void op_xmd();
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void op_ad();
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void op_adc();
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void op_ads();
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void op_daa();
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void op_das();
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void op_exl();
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void op_cma();
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void op_cia();
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void op_clc();
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void op_stc();
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void op_tc();
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void op_inc();
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void op_dec();
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void op_ind();
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void op_ded();
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void op_rmb();
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void op_smb();
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void op_reb();
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void op_seb();
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void op_rpb();
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void op_spb();
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void op_jmpcal();
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void op_jcp();
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void op_jpa();
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void op_czp();
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void op_rt();
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void op_rts();
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void op_ci();
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void op_cm();
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void op_cmb();
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void op_tab();
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void op_cli();
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void op_tmb();
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void op_tpa();
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void op_tpb();
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void op_tit();
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void op_ia();
|
||||
void op_ip();
|
||||
void op_oe();
|
||||
void op_op();
|
||||
void op_ocd();
|
||||
void op_nop();
|
||||
|
||||
void op_taw();
|
||||
void op_taz();
|
||||
void op_thx();
|
||||
void op_tly();
|
||||
void op_xaw();
|
||||
void op_xaz();
|
||||
void op_xhr();
|
||||
void op_xhx();
|
||||
void op_xls();
|
||||
void op_xly();
|
||||
void op_xc();
|
||||
|
||||
void op_sfb();
|
||||
void op_rfb();
|
||||
void op_fbt();
|
||||
void op_fbf();
|
||||
void op_rar();
|
||||
void op_inm();
|
||||
void op_dem();
|
||||
void op_stm();
|
||||
void op_ttm();
|
||||
void op_ei();
|
||||
void op_di();
|
||||
};
|
||||
|
||||
|
||||
|
||||
@ -1 +1,579 @@
|
||||
// uCOM4 opcode handlers
|
||||
// uCOM-4 opcode handlers
|
||||
|
||||
// internal helpers
|
||||
|
||||
void ucom4_cpu_device::op_illegal()
|
||||
{
|
||||
logerror("%s unknown opcode $%02X at $%03X\n", tag(), m_op, m_pc);
|
||||
}
|
||||
|
||||
|
||||
|
||||
// basic instruction set
|
||||
|
||||
// Load
|
||||
|
||||
void ucom4_cpu_device::op_li()
|
||||
{
|
||||
// LI X: Load ACC with X
|
||||
// note: only execute the first one in a sequence of LAI
|
||||
if ((m_prev_op & 0xf0) != (m_op & 0xf0))
|
||||
m_acc = m_op & 0x0f;
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_lm()
|
||||
{
|
||||
// LM X: Load ACC with RAM, xor DPh with X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ldi()
|
||||
{
|
||||
// LDI X: Load DP with X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ldz()
|
||||
{
|
||||
// LDZ X: Load DPh with 0, Load DPl with X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Store
|
||||
|
||||
void ucom4_cpu_device::op_s()
|
||||
{
|
||||
// S: Store ACC into RAM
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Transfer
|
||||
|
||||
void ucom4_cpu_device::op_tal()
|
||||
{
|
||||
// TAL: Transfer ACC to DPl
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tla()
|
||||
{
|
||||
// TLA: Transfer
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Exchange
|
||||
|
||||
void ucom4_cpu_device::op_xm()
|
||||
{
|
||||
// XM X: Exchange ACC with RAM, xor DPh with X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xmi()
|
||||
{
|
||||
// XMI X: Exchange ACC with RAM, xor DPh with X, Increment DPl, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xmd()
|
||||
{
|
||||
// XMD X: Exchange ACC with RAM, xor DPh with X, Decrement DPl, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Arithmetic
|
||||
|
||||
void ucom4_cpu_device::op_ad()
|
||||
{
|
||||
// AD: Add RAM to Acc, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_adc()
|
||||
{
|
||||
// ADC: Add RAM and carry to Acc, store Carry F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ads()
|
||||
{
|
||||
// ADS: Add RAM and carry to Acc, store Carry F/F, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_daa()
|
||||
{
|
||||
// DAA: Add 6 to ACC to adjust decimal for BCD Addition
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_das()
|
||||
{
|
||||
// DAS: Add 10 to ACC to adjust decimal for BCD Subtraction
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Logical
|
||||
|
||||
void ucom4_cpu_device::op_exl()
|
||||
{
|
||||
// EXL: Xor ACC with RAM
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Accumulator
|
||||
|
||||
void ucom4_cpu_device::op_cma()
|
||||
{
|
||||
// CMA: Complement ACC
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_cia()
|
||||
{
|
||||
// CIA: Complement ACC, Increment ACC
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Carry Flag
|
||||
|
||||
void ucom4_cpu_device::op_clc()
|
||||
{
|
||||
// CLC: Reset Carry F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_stc()
|
||||
{
|
||||
// STC: Set Carry F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tc()
|
||||
{
|
||||
// TC: skip next on Carry F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Increment and Decrement
|
||||
|
||||
void ucom4_cpu_device::op_inc()
|
||||
{
|
||||
// INC: Increment ACC, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_dec()
|
||||
{
|
||||
// DEC: Decrement ACC, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ind()
|
||||
{
|
||||
// IND: Increment DPl, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ded()
|
||||
{
|
||||
// DED: Decrement DPl, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Bit Manipulation
|
||||
|
||||
void ucom4_cpu_device::op_rmb()
|
||||
{
|
||||
// RMB B: Reset a single bit of RAM
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_smb()
|
||||
{
|
||||
// SMB B: Set a single bit of RAM
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_reb()
|
||||
{
|
||||
// REB B: Reset a single bit of output port E
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_seb()
|
||||
{
|
||||
// SEB B: Set a single bit of output port E
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_rpb()
|
||||
{
|
||||
// RPB B: Reset a single bit of output port (DPl)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_spb()
|
||||
{
|
||||
// SPB B: Set a single bit of output port (DPl)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Jump, Call and Return
|
||||
|
||||
void ucom4_cpu_device::op_jmpcal()
|
||||
{
|
||||
// JMP A: Jump to Address / CAL A: Call Address
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_jcp()
|
||||
{
|
||||
// JCP A: Jump to Address in current page
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_jpa()
|
||||
{
|
||||
// JPA: Jump to (ACC)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_czp()
|
||||
{
|
||||
// CZP A: Call (Address)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_rt()
|
||||
{
|
||||
// RT: Return from subroutine
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_rts()
|
||||
{
|
||||
// RTS: Return from subroutine, skip next
|
||||
op_rt();
|
||||
m_skip = true;
|
||||
}
|
||||
|
||||
|
||||
// Skip
|
||||
|
||||
void ucom4_cpu_device::op_ci()
|
||||
{
|
||||
// CI X: skip next on ACC equals X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_cm()
|
||||
{
|
||||
// CM: skip next on ACC equals RAM
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_cmb()
|
||||
{
|
||||
// CMB B: skip next on bit(ACC) equals bit(RAM)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tab()
|
||||
{
|
||||
// TAB B: skip next on bit(ACC)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_cli()
|
||||
{
|
||||
// CLI X: skip next on DPl equals X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tmb()
|
||||
{
|
||||
// TMB B: skip next on bit(RAM)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tpa()
|
||||
{
|
||||
// TPA B: skip next on bit(input port A)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tpb()
|
||||
{
|
||||
// TPB B: skip next on bit(input port (DPl))
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Interrupt
|
||||
|
||||
void ucom4_cpu_device::op_tit()
|
||||
{
|
||||
// TIT: skip next on Interrupt F/F, reset Interrupt F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Parallel I/O
|
||||
|
||||
void ucom4_cpu_device::op_ia()
|
||||
{
|
||||
// IA: x
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ip()
|
||||
{
|
||||
// IP: x
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_oe()
|
||||
{
|
||||
// OE: x
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_op()
|
||||
{
|
||||
// OP: x
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ocd()
|
||||
{
|
||||
// OCD X: x
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// CPU Control
|
||||
|
||||
void ucom4_cpu_device::op_nop()
|
||||
{
|
||||
// NOP: No Operation
|
||||
}
|
||||
|
||||
|
||||
|
||||
// uCOM-43 extended instructions
|
||||
|
||||
inline bool ucom4_cpu_device::check_op_43()
|
||||
{
|
||||
// these opcodes are officially only supported on uCOM-43
|
||||
if (m_family != NEC_UCOM43)
|
||||
logerror("%s using uCOM-43 opcode $%02X at $%03X\n", tag(), m_op, m_pc);
|
||||
|
||||
return (m_family == NEC_UCOM43);
|
||||
}
|
||||
|
||||
// Transfer
|
||||
|
||||
void ucom4_cpu_device::op_taw()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// TAW: Transfer ACC to W
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_taz()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// TAZ: Transfer ACC to Z
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_thx()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// THX: Transfer DPh to X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_tly()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// TLY: Transfer DPl to Y
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Exchange
|
||||
|
||||
void ucom4_cpu_device::op_xaw()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XAW: Exchange ACC with W
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xaz()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XAZ: Exchange ACC with Z
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xhr()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XHR: Exchange DPh with R
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xhx()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XHX: Exchange DPh with X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xls()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XLS: Exchange DPl with S
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xly()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XLY: Exchange DPl with Y
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_xc()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// XC: Exchange Carry F/F with Carry Save F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Flag
|
||||
|
||||
void ucom4_cpu_device::op_sfb()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// SFB B: Set a single bit of FLAG
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_rfb()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// RFB B: Reset a single bit of FLAG
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_fbt()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// FBT B: skip next on bit(FLAG)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_fbf()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// FBF B: skip next on not bit(FLAG)
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Accumulator
|
||||
|
||||
void ucom4_cpu_device::op_rar()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// RAR: Rotate ACC Right through Carry F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Increment and Decrement
|
||||
|
||||
void ucom4_cpu_device::op_inm()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// INM: Increment RAM, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_dem()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// DEM: Decrement RAM, skip next on carry
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Timer
|
||||
|
||||
void ucom4_cpu_device::op_stm()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// STM X: Reset Timer F/F, Start Timer with X
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_ttm()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// TTM: skip next on Timer F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
|
||||
// Interrupt
|
||||
|
||||
void ucom4_cpu_device::op_ei()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// EI: Set Interrupt Enable F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
void ucom4_cpu_device::op_di()
|
||||
{
|
||||
if (!check_op_43()) return;
|
||||
|
||||
// DI: Reset Interrupt Enable F/F
|
||||
op_illegal();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user