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/>.

// CLC
.at 0xf8;
    b_sel IMMEDIATE, immediate 0x0, alu_op SETFLAGSB, update_flags CF,
        next_instruction;

// STC
.at 0xf9;
    b_sel IMMEDIATE, immediate 0xffff, alu_op SETFLAGSB, update_flags CF,
        next_instruction;

// CLI
.at 0xfa;
    b_sel IMMEDIATE, immediate 0x0, alu_op SETFLAGSB, update_flags IF,
        next_instruction;

// STI
.at 0xfb;
    b_sel IMMEDIATE, immediate 0xffff, alu_op SETFLAGSB, update_flags IF,
        ext_int_inhibit, next_instruction;

// CLD
.at 0xfc;
    b_sel IMMEDIATE, immediate 0x0, alu_op SETFLAGSB, update_flags DF,
        next_instruction;

// STD
.at 0xfd;
    b_sel IMMEDIATE, immediate 0xffff, alu_op SETFLAGSB, update_flags DF,
        next_instruction;

// CMC
.at 0xf5;
    alu_op CMC, update_flags CF, next_instruction;

// LAHF
.at 0x9f;
    alu_op GETFLAGS, rd_sel_source MICROCODE_RD_SEL, rd_sel AH,
        width W8, next_instruction;

// SAHF
.at 0x9e;
    ra_sel AH, width W8, jmp sahf;
.auto_address;
sahf:
    a_sel RA, alu_op SETFLAGSA, update_flags CF PF AF ZF SF, next_instruction;

// SETALC
.at 0xd6;
    ra_sel CX, rb_cl, jmp setalc;
.auto_address;
setalc:
    width W8, a_sel RA, b_sel RB, alu_op SBB,
        rd_sel_source MICROCODE_RD_SEL, rd_sel AL, next_instruction;