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::loopnze0()
{
    int16_t displacement = static_cast<int8_t>(fetch_byte());
 
    registers->set(CX, registers->get(CX) - 1);
 
    if (registers->get(CX) != 0 && !registers->get_flag(ZF)) {
        registers->set(IP, registers->get(IP) + instr_length + displacement);
        jump_taken = true;
    }
}