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<defines>
`define CMD_IN          #AUTOGEN_NEXT_CMD

`define CMDEX_IN_imm            4'd0
`define CMDEX_IN_dx             4'd1

`define CMDEX_IN_protected      4'd2

`define CMDEX_IN_idle           4'd3
</defines>

<decode>
(dec_ready_one && { decoder[7:1], 1'b0 } == 8'hEC) || (dec_ready_one_one && { decoder[7:1], 1'b0 } == 8'hE4)
`CMD_IN
IF(decoder[3]); SET(dec_cmdex, `CMDEX_IN_dx); ELSE(); SET(dec_cmdex, `CMDEX_IN_imm); ENDIF();
IF(decoder[0] == 1'b0); SET(dec_is_8bit); ENDIF();
IF(decoder[3] == 1'b1); SET(consume_one); ELSE(); SET(consume_one_one); ENDIF();
SET(dec_is_complex);
</decode>

<microcode>
IF(mc_cmd == `CMD_IN && (mc_cmdex_last == `CMDEX_IN_imm || mc_cmdex_last == `CMDEX_IN_dx) && ~(io_allow_check_needed));
    LOOP(`CMDEX_IN_idle);
ENDIF();

IF(mc_cmd == `CMD_IN && (mc_cmdex_last == `CMDEX_IN_imm || mc_cmdex_last == `CMDEX_IN_dx) && io_allow_check_needed);
    CALL(`CMDEX_io_allow_1);
    `CMDEX_IN_protected
    LOOP(`CMDEX_IN_idle);
ENDIF();
</microcode>

<read_local>
wire rd_in_condition;

assign rd_in_condition =
    (rd_mutex_busy_active && (rd_cmdex == `CMDEX_IN_imm || rd_cmdex == `CMDEX_IN_dx) && ~(io_allow_check_needed)) ||
    (rd_cmdex == `CMDEX_IN_dx && rd_mutex_busy_edx);
</read_local>

<read>
IF(rd_cmd == `CMD_IN && rd_cmdex != `CMDEX_IN_idle);
    
    SET(io_read_address, (rd_cmdex == `CMDEX_IN_imm)? { 8'd0, rd_decoder[15:8] } : (rd_cmdex == `CMDEX_IN_protected)? glob_param_1[15:0] : edx[15:0]);

    IF(rd_in_condition); SET(rd_waiting);
    ELSE();
    
        IF(~(io_allow_check_needed) || rd_cmdex == `CMDEX_IN_protected);
            SET(rd_src_is_io);
    
            SET(io_read);
            
            //not required: SET(rd_req_eax);
            
            IF(~(rd_io_ready)); SET(rd_waiting); ENDIF();
        ENDIF();
    ENDIF();
ENDIF();
</read>

<execute>
IF(exe_cmd == `CMD_IN && exe_cmdex == `CMDEX_IN_protected);
    SET(exe_result2, src);
ENDIF();
</execute>

<execute>
IF(exe_cmd == `CMD_IN && (exe_cmdex == `CMDEX_IN_dx || exe_cmdex == `CMDEX_IN_imm));
    SET(exe_result2, src);

    IF(exe_cmdex == `CMDEX_IN_dx && exe_mutex_current[`MUTEX_EDX_BIT]); SET(exe_waiting);
    ELSE();
        SET(exe_glob_param_1_set);
        SET(exe_glob_param_1_value, (exe_cmdex == `CMDEX_IN_dx)? { 16'd0, edx[15:0] } : { 24'd0, exe_decoder[15:8] });
    ENDIF();
ENDIF();
</execute>

<write>
IF(wr_cmd == `CMD_IN); // all CMDEX
    
    IF(~(io_allow_check_needed) || wr_cmdex == `CMDEX_IN_protected);
        
        SAVE(eax, (wr_is_8bit)? { eax[31:8], result2[7:0] } : (wr_operand_16bit)? { eax[31:16], result2[15:0] } : result2);
        
        // reset pipeline
        SET(wr_req_reset_micro);
        SET(wr_req_reset_rd);
        SET(wr_req_reset_exe);
    ELSE();
        SET(wr_not_finished);
    ENDIF();
ENDIF();
</write>