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author | 2016-05-01 20:27:50 +0200 | |
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committer | 2016-05-01 20:27:50 +0200 | |
commit | be67262fc21f75d40dead90256c0ec3142be7b12 (patch) | |
tree | 4013158c275962acd59cd78df4932dc117efa0a7 /src/devices/cpu/z8/z8ops.inc | |
parent | 66d0dd3d8255ae33a5a28455a540c71c032a11e9 (diff) |
INC -> HXX makes editors and code analyzers see it as C++ (nw)
Diffstat (limited to 'src/devices/cpu/z8/z8ops.inc')
-rw-r--r-- | src/devices/cpu/z8/z8ops.inc | 745 |
1 files changed, 0 insertions, 745 deletions
diff --git a/src/devices/cpu/z8/z8ops.inc b/src/devices/cpu/z8/z8ops.inc deleted file mode 100644 index 4c522791b8e..00000000000 --- a/src/devices/cpu/z8/z8ops.inc +++ /dev/null @@ -1,745 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Curt Coder -/********************************************************************** - - Zilog Z8 Single-Chip MCU emulation - -**********************************************************************/ - -/*************************************************************************** - MACROS -***************************************************************************/ - -#define read(_reg) register_read(_reg) -#define r(_data) get_working_register(_data) -#define Ir(_data) get_intermediate_register(get_working_register(_data)) -#define R get_register(fetch()) -#define IR get_intermediate_register(get_register(fetch())) -#define RR get_intermediate_register(get_register(fetch())) -#define IM fetch() -#define flag(_flag) ((m_r[Z8_REGISTER_FLAGS] & Z8_FLAGS##_##_flag) ? 1 : 0) - -#define mode_r1_r2(_func) \ - UINT8 dst_src = fetch();\ - UINT8 dst = r(dst_src >> 4);\ - UINT8 src = read(r(dst_src & 0x0f));\ - _func(dst, src); - -#define mode_r1_Ir2(_func) \ - UINT8 dst_src = fetch();\ - UINT8 dst = r(dst_src >> 4);\ - UINT8 src = read(Ir(dst_src & 0x0f));\ - _func(dst, src); - -#define mode_R2_R1(_func) \ - UINT8 src = read(R);\ - UINT8 dst = R;\ - _func(dst, src); - -#define mode_IR2_R1(_func) \ - UINT8 src = read(R);\ - UINT8 dst = IR;\ - _func(dst, src); - -#define mode_R1_IM(_func) \ - UINT8 dst = R;\ - UINT8 src = IM;\ - _func(dst, src); - -#define mode_IR1_IM(_func) \ - UINT8 dst = IR;\ - UINT8 src = IM;\ - _func(dst, src); - -#define mode_r1(_func) \ - UINT8 dst = r(opcode >> 4);\ - _func(dst); - -#define mode_R1(_func) \ - UINT8 dst = R;\ - _func(dst); - -#define mode_RR1(_func) \ - UINT8 dst = R;\ - _func(dst); - -#define mode_IR1(_func) \ - UINT8 dst = IR;\ - _func(dst); - -#define mode_r1_IM(_func) \ - UINT8 dst = r(opcode >> 4);\ - UINT8 src = IM;\ - _func(dst, src); - -#define mode_r1_R2(_func) \ - UINT8 dst = r(opcode >> 4);\ - UINT8 src = read(R);\ - _func(dst, src); - -#define mode_r2_R1(_func) \ - UINT8 src = read(r(opcode >> 4));\ - UINT8 dst = R;\ - _func(dst, src); - -#define mode_Ir1_r2(_func) \ - UINT8 dst_src = fetch();\ - UINT8 dst = Ir(dst_src >> 4);\ - UINT8 src = read(r(dst_src & 0x0f));\ - _func(dst, src); - -#define mode_R2_IR1(_func) \ - UINT8 src = read(R);\ - UINT8 dst = IR;\ - _func(dst, src); - -#define mode_r1_x_R2(_func) \ - UINT8 dst_src = fetch();\ - UINT8 dst = r(dst_src >> 4);\ - UINT8 src = read(read(r(dst_src & 0x0f)) + R);\ - _func(dst, src); - -#define mode_r2_x_R1(_func) \ - UINT8 dst_src = fetch();\ - UINT8 dst = R + read(r(dst_src & 0x0f));\ - UINT8 src = read(r(dst_src >> 4));\ - _func(dst, src); - -/*************************************************************************** - LOAD INSTRUCTIONS -***************************************************************************/ - -void z8_device::clear(UINT8 dst) -{ - /* dst <- 0 */ - register_write(dst, 0); -} - -INSTRUCTION( clr_R1 ) { mode_R1(clear) } -INSTRUCTION( clr_IR1 ) { mode_IR1(clear) } - -void z8_device::load(UINT8 dst, UINT8 src) -{ - /* dst <- src */ - register_write(dst, src); -} - -INSTRUCTION( ld_r1_IM ) { mode_r1_IM(load) } -INSTRUCTION( ld_r1_R2 ) { mode_r1_R2(load) } -INSTRUCTION( ld_r2_R1 ) { mode_r2_R1(load) } -INSTRUCTION( ld_Ir1_r2 ) { mode_Ir1_r2(load) } -INSTRUCTION( ld_R2_IR1 ) { mode_R2_IR1(load) } -INSTRUCTION( ld_r1_x_R2 ) { mode_r1_x_R2(load) } -INSTRUCTION( ld_r2_x_R1 ) { mode_r2_x_R1(load) } - -INSTRUCTION( ld_r1_r2 ) { mode_r1_r2(load) } -INSTRUCTION( ld_r1_Ir2 ) { mode_r1_Ir2(load) } -INSTRUCTION( ld_R2_R1 ) { mode_R2_R1(load) } -INSTRUCTION( ld_IR2_R1 ) { mode_IR2_R1(load) } -INSTRUCTION( ld_R1_IM ) { mode_R1_IM(load) } -INSTRUCTION( ld_IR1_IM ) { mode_IR1_IM(load) } - -void z8_device::load_from_memory(address_space *space) -{ - UINT8 operands = fetch(); - UINT8 dst = get_working_register(operands >> 4); - UINT8 src = get_working_register(operands & 0x0f); - - UINT16 address = register_pair_read(src); - UINT8 data = m_direct->read_byte(address); - - register_write(dst, data); -} - -void z8_device::load_to_memory(address_space *space) -{ - UINT8 operands = fetch(); - UINT8 src = get_working_register(operands >> 4); - UINT8 dst = get_working_register(operands & 0x0f); - - UINT16 address = register_pair_read(dst); - UINT8 data = register_read(src); - - m_program->write_byte(address, data); -} - -void z8_device::load_from_memory_autoinc(address_space *space) -{ - UINT8 operands = fetch(); - UINT8 dst = get_working_register(operands >> 4); - UINT8 real_dst = get_intermediate_register(dst); - UINT8 src = get_working_register(operands & 0x0f); - - UINT16 address = register_pair_read(src); - UINT8 data = m_direct->read_byte(address); - - register_write(real_dst, data); - - register_write(dst, real_dst + 1); - register_pair_write(src, address + 1); -} - -void z8_device::load_to_memory_autoinc(address_space *space) -{ - UINT8 operands = fetch(); - UINT8 src = get_working_register(operands >> 4); - UINT8 dst = get_working_register(operands & 0x0f); - UINT8 real_src = get_intermediate_register(src); - - UINT16 address = register_pair_read(dst); - UINT8 data = register_read(real_src); - - m_program->write_byte(address, data); - - register_pair_write(dst, address + 1); - register_write(src, real_src + 1); -} - -INSTRUCTION( ldc_r1_Irr2 ) { load_from_memory(m_program); } -INSTRUCTION( ldc_r2_Irr1 ) { load_to_memory(m_program); } -INSTRUCTION( ldci_Ir1_Irr2 ) { load_from_memory_autoinc(m_program); } -INSTRUCTION( ldci_Ir2_Irr1 ) { load_to_memory_autoinc(m_program); } -INSTRUCTION( lde_r1_Irr2 ) { load_from_memory(m_data); } -INSTRUCTION( lde_r2_Irr1 ) { load_to_memory(m_data); } -INSTRUCTION( ldei_Ir1_Irr2 ) { load_from_memory_autoinc(m_data); } -INSTRUCTION( ldei_Ir2_Irr1 ) { load_to_memory_autoinc(m_data); } - -void z8_device::pop(UINT8 dst) -{ - /* dst <- @SP - SP <- SP + 1 */ - register_write(dst, stack_pop_byte()); -} - -INSTRUCTION( pop_R1 ) { mode_R1(pop) } -INSTRUCTION( pop_IR1 ) { mode_IR1(pop) } - -void z8_device::push(UINT8 src) -{ - /* SP <- SP - 1 - @SP <- src */ - stack_push_byte(read(src)); -} - -INSTRUCTION( push_R2 ) { mode_R1(push) } -INSTRUCTION( push_IR2 ) { mode_IR1(push) } - -/*************************************************************************** - ARITHMETIC INSTRUCTIONS -***************************************************************************/ - -void z8_device::add_carry(UINT8 dst, INT8 src) -{ - /* dst <- dst + src + C */ - UINT8 data = register_read(dst); - UINT16 new_data = data + src + flag(C); - - set_flag_c(new_data & 0x100); - set_flag_z(new_data == 0); - set_flag_s(new_data & 0x80); - set_flag_v(((data & 0x80) == (src & 0x80)) && ((new_data & 0x80) != (src & 0x80))); - set_flag_d(0); - set_flag_h(((data & 0x1f) == 0x0f) && ((new_data & 0x1f) == 0x10)); - - register_write(dst, new_data & 0xff); -} - -INSTRUCTION( adc_r1_r2 ) { mode_r1_r2(add_carry) } -INSTRUCTION( adc_r1_Ir2 ) { mode_r1_Ir2(add_carry) } -INSTRUCTION( adc_R2_R1 ) { mode_R2_R1(add_carry) } -INSTRUCTION( adc_IR2_R1 ) { mode_IR2_R1(add_carry) } -INSTRUCTION( adc_R1_IM ) { mode_R1_IM(add_carry) } -INSTRUCTION( adc_IR1_IM ) { mode_IR1_IM(add_carry) } - -void z8_device::add(UINT8 dst, INT8 src) -{ - /* dst <- dst + src */ - UINT8 data = register_read(dst); - UINT16 new_data = data + src; - - set_flag_c(new_data & 0x100); - set_flag_z(new_data == 0); - set_flag_s(new_data & 0x80); - set_flag_v(((data & 0x80) == (src & 0x80)) && ((new_data & 0x80) != (src & 0x80))); - set_flag_d(0); - set_flag_h(((data & 0x1f) == 0x0f) && ((new_data & 0x1f) == 0x10)); - - register_write(dst, new_data & 0xff); -} - -INSTRUCTION( add_r1_r2 ) { mode_r1_r2(add) } -INSTRUCTION( add_r1_Ir2 ) { mode_r1_Ir2(add) } -INSTRUCTION( add_R2_R1 ) { mode_R2_R1(add) } -INSTRUCTION( add_IR2_R1 ) { mode_IR2_R1(add) } -INSTRUCTION( add_R1_IM ) { mode_R1_IM(add) } -INSTRUCTION( add_IR1_IM ) { mode_IR1_IM(add) } - -void z8_device::compare(UINT8 dst, UINT8 src) -{ - /* dst - src */ - UINT8 data = register_read(dst); - UINT16 new_data = data - src; - - set_flag_c(!(new_data & 0x100)); - set_flag_z(new_data == 0); - set_flag_s(new_data & 0x80); - set_flag_v(((data & 0x80) != (src & 0x80)) && ((new_data & 0x80) == (src & 0x80))); -} - -INSTRUCTION( cp_r1_r2 ) { mode_r1_r2(compare) } -INSTRUCTION( cp_r1_Ir2 ) { mode_r1_Ir2(compare) } -INSTRUCTION( cp_R2_R1 ) { mode_R2_R1(compare) } -INSTRUCTION( cp_IR2_R1 ) { mode_IR2_R1(compare) } -INSTRUCTION( cp_R1_IM ) { mode_R1_IM(compare) } -INSTRUCTION( cp_IR1_IM ) { mode_IR1_IM(compare) } - -void z8_device::decimal_adjust(UINT8 dst) -{ -} - -INSTRUCTION( da_R1 ) { mode_R1(decimal_adjust) } -INSTRUCTION( da_IR1 ) { mode_IR1(decimal_adjust) } - -void z8_device::decrement(UINT8 dst) -{ - /* dst <- dst - 1 */ - UINT8 data = register_read(dst) - 1; - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(data == 0x7f); - - register_write(dst, data); -} - -INSTRUCTION( dec_R1 ) { mode_R1(decrement) } -INSTRUCTION( dec_IR1 ) { mode_IR1(decrement) } - -void z8_device::decrement_word(UINT8 dst) -{ - /* dst <- dst - 1 */ - UINT16 data = register_pair_read(dst) - 1; - - set_flag_z(data == 0); - set_flag_s(data & 0x8000); - set_flag_v(data == 0x7fff); - - register_pair_write(dst, data); -} - -INSTRUCTION( decw_RR1 ) { mode_RR1(decrement_word) } -INSTRUCTION( decw_IR1 ) { mode_IR1(decrement_word) } - -void z8_device::increment(UINT8 dst) -{ - /* dst <- dst + 1 */ - UINT8 data = register_read(dst) + 1; - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(data == 0x80); - - register_write(dst, data); -} - -INSTRUCTION( inc_r1 ) { mode_r1(increment) } -INSTRUCTION( inc_R1 ) { mode_R1(increment) } -INSTRUCTION( inc_IR1 ) { mode_IR1(increment) } - -void z8_device::increment_word(UINT8 dst) -{ - /* dst <- dst + 1 */ - UINT16 data = register_pair_read(dst) + 1; - - set_flag_z(data == 0); - set_flag_s(data & 0x8000); - set_flag_v(data == 0x8000); - - register_pair_write(dst, data); -} - -INSTRUCTION( incw_RR1 ) { mode_RR1(increment_word) } -INSTRUCTION( incw_IR1 ) { mode_IR1(increment_word) } - -void z8_device::subtract_carry(UINT8 dst, UINT8 src) -{ - /* dst <- dst - src - C */ - UINT8 data = register_read(dst); - UINT16 new_data = data - src; - - set_flag_c(!(new_data & 0x100)); - set_flag_z(new_data == 0); - set_flag_s(new_data & 0x80); - set_flag_v(((data & 0x80) != (src & 0x80)) && ((new_data & 0x80) == (src & 0x80))); - set_flag_d(1); - set_flag_h(!(((data & 0x1f) == 0x0f) && ((new_data & 0x1f) == 0x10))); - - register_write(dst, new_data & 0xff); -} - -INSTRUCTION( sbc_r1_r2 ) { mode_r1_r2(subtract_carry) } -INSTRUCTION( sbc_r1_Ir2 ) { mode_r1_Ir2(subtract_carry) } -INSTRUCTION( sbc_R2_R1 ) { mode_R2_R1(subtract_carry) } -INSTRUCTION( sbc_IR2_R1 ) { mode_IR2_R1(subtract_carry) } -INSTRUCTION( sbc_R1_IM ) { mode_R1_IM(subtract_carry) } -INSTRUCTION( sbc_IR1_IM ) { mode_IR1_IM(subtract_carry) } - -void z8_device::subtract(UINT8 dst, UINT8 src) -{ - /* dst <- dst - src */ - UINT8 data = register_read(dst); - UINT16 new_data = data - src; - - set_flag_c(!(new_data & 0x100)); - set_flag_z(new_data == 0); - set_flag_s(new_data & 0x80); - set_flag_v(((data & 0x80) != (src & 0x80)) && ((new_data & 0x80) == (src & 0x80))); - set_flag_d(1); - set_flag_h(!(((data & 0x1f) == 0x0f) && ((new_data & 0x1f) == 0x10))); - - register_write(dst, new_data & 0xff); -} - -INSTRUCTION( sub_r1_r2 ) { mode_r1_r2(subtract) } -INSTRUCTION( sub_r1_Ir2 ) { mode_r1_Ir2(subtract) } -INSTRUCTION( sub_R2_R1 ) { mode_R2_R1(subtract) } -INSTRUCTION( sub_IR2_R1 ) { mode_IR2_R1(subtract) } -INSTRUCTION( sub_R1_IM ) { mode_R1_IM(subtract) } -INSTRUCTION( sub_IR1_IM ) { mode_IR1_IM(subtract) } - -/*************************************************************************** - LOGICAL INSTRUCTIONS -***************************************************************************/ - -void z8_device::_and(UINT8 dst, UINT8 src) -{ - /* dst <- dst AND src */ - UINT8 data = register_read(dst) & src; - register_write(dst, data); - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(0); -} - -INSTRUCTION( and_r1_r2 ) { mode_r1_r2(_and) } -INSTRUCTION( and_r1_Ir2 ) { mode_r1_Ir2(_and) } -INSTRUCTION( and_R2_R1 ) { mode_R2_R1(_and) } -INSTRUCTION( and_IR2_R1 ) { mode_IR2_R1(_and) } -INSTRUCTION( and_R1_IM ) { mode_R1_IM(_and) } -INSTRUCTION( and_IR1_IM ) { mode_IR1_IM(_and) } - -void z8_device::complement(UINT8 dst) -{ - /* dst <- NOT dst */ - UINT8 data = register_read(dst) ^ 0xff; - register_write(dst, data); - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(0); -} - -INSTRUCTION( com_R1 ) { mode_R1(complement) } -INSTRUCTION( com_IR1 ) { mode_IR1(complement) } - -void z8_device::_or(UINT8 dst, UINT8 src) -{ - /* dst <- dst OR src */ - UINT8 data = register_read(dst) | src; - register_write(dst, data); - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(0); -} - -INSTRUCTION( or_r1_r2 ) { mode_r1_r2(_or) } -INSTRUCTION( or_r1_Ir2 ) { mode_r1_Ir2(_or) } -INSTRUCTION( or_R2_R1 ) { mode_R2_R1(_or) } -INSTRUCTION( or_IR2_R1 ) { mode_IR2_R1(_or) } -INSTRUCTION( or_R1_IM ) { mode_R1_IM(_or) } -INSTRUCTION( or_IR1_IM ) { mode_IR1_IM(_or) } - -void z8_device::_xor(UINT8 dst, UINT8 src) -{ - /* dst <- dst XOR src */ - UINT8 data = register_read(dst) ^ src; - register_write(dst, data); - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(0); -} - -INSTRUCTION( xor_r1_r2 ) { mode_r1_r2(_xor) } -INSTRUCTION( xor_r1_Ir2 ) { mode_r1_Ir2(_xor) } -INSTRUCTION( xor_R2_R1 ) { mode_R2_R1(_xor) } -INSTRUCTION( xor_IR2_R1 ) { mode_IR2_R1(_xor) } -INSTRUCTION( xor_R1_IM ) { mode_R1_IM(_xor) } -INSTRUCTION( xor_IR1_IM ) { mode_IR1_IM(_xor) } - -/*************************************************************************** - PROGRAM CONTROL INSTRUCTIONS -***************************************************************************/ - -void z8_device::call(UINT16 dst) -{ - stack_push_word(m_pc); - m_pc = dst; -} - -INSTRUCTION( call_IRR1 ) { UINT16 dst = register_pair_read(get_intermediate_register(get_register(fetch()))); call(dst); } -INSTRUCTION( call_DA ) { UINT16 dst = (fetch() << 8) | fetch(); call(dst); } - -INSTRUCTION( djnz_r1_RA ) -{ - INT8 ra = (INT8)fetch(); - - /* r <- r - 1 */ - int r = get_working_register(opcode >> 4); - UINT8 data = register_read(r) - 1; - register_write(r, data); - - /* if r<>0, PC <- PC + dst */ - if (data != 0) - { - m_pc += ra; - *cycles += 2; - } -} - -INSTRUCTION( iret ) -{ - /* FLAGS <- @SP - SP <- SP + 1 */ - register_write(Z8_REGISTER_FLAGS, stack_pop_byte()); - - /* PC <- @SP - SP <- SP + 2 */ - m_pc = stack_pop_word(); - - /* IMR (7) <- 1 */ - m_r[Z8_REGISTER_IMR] |= Z8_IMR_ENABLE; -} - -INSTRUCTION( ret ) -{ - /* PC <- @SP - SP <- SP + 2 */ - m_pc = stack_pop_word(); -} - -void z8_device::jump(UINT16 dst) -{ - /* PC <- dst */ - m_pc = dst; -} - -INSTRUCTION( jp_IRR1 ) { jump(register_pair_read(IR)); } - -int z8_device::check_condition_code(int cc) -{ - int truth = 0; - - switch (cc) - { - case CC_F: truth = 0; break; - case CC_LT: truth = flag(S) ^ flag(V); break; - case CC_LE: truth = (flag(Z) | (flag(S) ^ flag(V))); break; - case CC_ULE: truth = flag(C) | flag(Z); break; - case CC_OV: truth = flag(V); break; - case CC_MI: truth = flag(S); break; - case CC_Z: truth = flag(Z); break; - case CC_C: truth = flag(C); break; - case CC_T: truth = 1; break; - case CC_GE: truth = !(flag(S) ^ flag(V)); break; - case CC_GT: truth = !(flag(Z) | (flag(S) ^ flag(V))); break; - case CC_UGT: truth = ((!flag(C)) & (!flag(Z))); break; - case CC_NOV: truth = !flag(V); break; - case CC_PL: truth = !flag(S); break; - case CC_NZ: truth = !flag(Z); break; - case CC_NC: truth = !flag(C); break; - } - - return truth; -} - -INSTRUCTION( jp_cc_DA ) -{ - UINT16 dst = (fetch() << 8) | fetch(); - - /* if cc is true, then PC <- dst */ - if (check_condition_code(opcode >> 4)) - { - jump(dst); - *cycles += 2; - } -} - -INSTRUCTION( jr_cc_RA ) -{ - INT8 ra = (INT8)fetch(); - UINT16 dst = m_pc + ra; - - /* if cc is true, then PC <- dst */ - if (check_condition_code(opcode >> 4)) - { - jump(dst); - *cycles += 2; - } -} - -/*************************************************************************** - BIT MANIPULATION INSTRUCTIONS -***************************************************************************/ - -void z8_device::test_complement_under_mask(UINT8 dst, UINT8 src) -{ - /* NOT(dst) AND src */ - UINT8 data = (register_read(dst) ^ 0xff) & src; - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(0); -} - -INSTRUCTION( tcm_r1_r2 ) { mode_r1_r2(test_complement_under_mask) } -INSTRUCTION( tcm_r1_Ir2 ) { mode_r1_Ir2(test_complement_under_mask) } -INSTRUCTION( tcm_R2_R1 ) { mode_R2_R1(test_complement_under_mask) } -INSTRUCTION( tcm_IR2_R1 ) { mode_IR2_R1(test_complement_under_mask) } -INSTRUCTION( tcm_R1_IM ) { mode_R1_IM(test_complement_under_mask) } -INSTRUCTION( tcm_IR1_IM ) { mode_IR1_IM(test_complement_under_mask) } - -void z8_device::test_under_mask(UINT8 dst, UINT8 src) -{ - /* dst AND src */ - UINT8 data = register_read(dst) & src; - - set_flag_z(data == 0); - set_flag_s(data & 0x80); - set_flag_v(0); -} - -INSTRUCTION( tm_r1_r2 ) { mode_r1_r2(test_under_mask) } -INSTRUCTION( tm_r1_Ir2 ) { mode_r1_Ir2(test_under_mask) } -INSTRUCTION( tm_R2_R1 ) { mode_R2_R1(test_under_mask) } -INSTRUCTION( tm_IR2_R1 ) { mode_IR2_R1(test_under_mask) } -INSTRUCTION( tm_R1_IM ) { mode_R1_IM(test_under_mask) } -INSTRUCTION( tm_IR1_IM ) { mode_IR1_IM(test_under_mask) } - -/*************************************************************************** - ROTATE AND SHIFT INSTRUCTIONS -***************************************************************************/ - -void z8_device::rotate_left(UINT8 dst) -{ - /* << */ - UINT8 data = register_read(dst); - UINT8 new_data = (data << 1) | BIT(data, 7); - - set_flag_c(data & 0x80); - set_flag_z(data == 0); - set_flag_s(new_data & 0x80); - set_flag_v((data & 0x80) != (new_data & 0x80)); - - register_write(dst, new_data); -} - -INSTRUCTION( rl_R1 ) { mode_R1(rotate_left) } -INSTRUCTION( rl_IR1 ) { mode_IR1(rotate_left) } - -void z8_device::rotate_left_carry(UINT8 dst) -{ - /* << C */ - UINT8 data = register_read(dst); - UINT8 new_data = (data << 1) | flag(C); - - set_flag_c(data & 0x80); - set_flag_z(data == 0); - set_flag_s(new_data & 0x80); - set_flag_v((data & 0x80) != (new_data & 0x80)); - - register_write(dst, new_data); -} - -INSTRUCTION( rlc_R1 ) { mode_R1(rotate_left_carry) } -INSTRUCTION( rlc_IR1 ) { mode_IR1(rotate_left_carry) } - -void z8_device::rotate_right(UINT8 dst) -{ - /* >> */ - UINT8 data = register_read(dst); - UINT8 new_data = ((data & 0x01) << 7) | (data >> 1); - - set_flag_c(data & 0x01); - set_flag_z(data == 0); - set_flag_s(new_data & 0x80); - set_flag_v((data & 0x80) != (new_data & 0x80)); - - register_write(dst, new_data); -} - -INSTRUCTION( rr_R1 ) { mode_R1(rotate_right) } -INSTRUCTION( rr_IR1 ) { mode_IR1(rotate_right) } - -void z8_device::rotate_right_carry(UINT8 dst) -{ - /* >> C */ - UINT8 data = register_read(dst); - UINT8 new_data = (flag(C) << 7) | (data >> 1); - - set_flag_c(data & 0x01); - set_flag_z(data == 0); - set_flag_s(new_data & 0x80); - set_flag_v((data & 0x80) != (new_data & 0x80)); - - register_write(dst, new_data); -} - -INSTRUCTION( rrc_R1 ) { mode_R1(rotate_right_carry) } -INSTRUCTION( rrc_IR1 ) { mode_IR1(rotate_right_carry) } - -void z8_device::shift_right_arithmetic(UINT8 dst) -{ - /* */ - UINT8 data = register_read(dst); - UINT8 new_data = (data & 0x80) | ((data >> 1) & 0x7f); - - set_flag_c(data & 0x01); - set_flag_z(data == 0); - set_flag_s(new_data & 0x80); - set_flag_v(0); - - register_write(dst, new_data); -} - -INSTRUCTION( sra_R1 ) { mode_R1(shift_right_arithmetic) } -INSTRUCTION( sra_IR1 ) { mode_IR1(shift_right_arithmetic) } - -void z8_device::swap(UINT8 dst) -{ - /* dst(7-4) <-> dst(3-0) */ - UINT8 data = register_read(dst); - data = (data << 4) | (data >> 4); - register_write(dst, data); - - set_flag_z(data == 0); - set_flag_s(data & 0x80); -// set_flag_v(0); undefined -} - -INSTRUCTION( swap_R1 ) { mode_R1(swap) } -INSTRUCTION( swap_IR1 ) { mode_IR1(swap) } - -/*************************************************************************** - CPU CONTROL INSTRUCTIONS -***************************************************************************/ - -INSTRUCTION( ccf ) { m_r[Z8_REGISTER_FLAGS] ^= Z8_FLAGS_C; } -INSTRUCTION( di ) { m_r[Z8_REGISTER_IMR] &= ~Z8_IMR_ENABLE; } -INSTRUCTION( ei ) { m_r[Z8_REGISTER_IMR] |= Z8_IMR_ENABLE; } -INSTRUCTION( nop ) { /* no operation */ } -INSTRUCTION( rcf ) { set_flag_c(0); } -INSTRUCTION( scf ) { set_flag_c(1); } -INSTRUCTION( srp_IM ) { m_r[Z8_REGISTER_RP] = fetch(); } |