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 .

.at 0xd7;

    width W8, ra_sel AL, jmp xlat;

.auto_address;

xlat:

    a_sel RA, alu_op SELA, tmp_wr_en, ra_sel BX;

    a_sel RA, alu_op SELA, mar_wr_sel Q, mar_write;

    a_sel MAR, b_sel TEMP, alu_op ADD, mar_wr_sel Q, mar_write, segment DS;

    segment DS, width W8, mem_read,

        a_sel MDR, alu_op SELA, width W8, rd_sel_source MICROCODE_RD_SEL,

        rd_sel AL, next_instruction;