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/>.

void EmulatorPimpl::enterc8()

{

    auto size = fetch_16bit();

    auto nest = fetch_byte() & 0x1f;

    push_word(registers->get(BP));

    auto frame_temp = registers->get(SP);

    for (int i = 1; i < nest; ++i) {

        registers->set(BP, registers->get(BP) - 2);

        push_word(mem->read<uint16_t>(

            get_phys_addr(registers->get(SS), registers->get(BP))));

    }

    if (nest)

        push_word(frame_temp);

    registers->set(BP, frame_temp);

    registers->set(SP, registers->get(SP) - size);

}