Subversion Repositories s80186

// Copyright Jamie Iles, 2017

//

// This file is part of s80x86.

//

// s80x86 is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// s80x86 is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with s80x86.  If not, see <http://www.gnu.org/licenses/>.

// pop r/m

void EmulatorPimpl::pop8f()

{

    modrm_decoder->set_width(OP_WIDTH_16);

    modrm_decoder->decode();

    if (modrm_decoder->raw_reg() != 0)

        return;

    auto addr = get_phys_addr(registers->get(SS), registers->get(SP));

    auto val = mem->read<uint16_t>(addr);

    registers->set(SP, registers->get(SP) + 2);

    write_data<uint16_t>(val);

}

// pop r

void EmulatorPimpl::pop58_5f()

{

    auto reg = static_cast<GPR>(static_cast<int>(AX) + (opcode & 0x7));

    auto addr = get_phys_addr(registers->get(SS), registers->get(SP));

    auto val = mem->read<uint16_t>(addr);

    registers->set(SP, registers->get(SP) + 2);

    registers->set(reg, val);

}

// pop sr

void EmulatorPimpl::popsr()

{

    auto reg = static_cast<GPR>(static_cast<int>(ES) + ((opcode >> 3) & 0x3));

    auto addr = get_phys_addr(registers->get(SS), registers->get(SP));

    auto val = mem->read<uint16_t>(addr);

    registers->set(reg, val);

    registers->set(SP, registers->get(SP) + 2);

    ext_int_inhibit = true;

}

// popf

void EmulatorPimpl::popf9d()

{

    auto addr = get_phys_addr(registers->get(SS), registers->get(SP));

    auto val = mem->read<uint16_t>(addr);

    registers->set_flags(val);

    registers->set(SP, registers->get(SP) + 2);

}