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[/] [ao486/] [trunk/] [rtl/] [ao486/] [commands/] [CMD_OUT.txt] - Blame information for rev 2

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Line No. Rev Author Line
1 2 alfik
 
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`define CMD_OUT         #AUTOGEN_NEXT_CMD
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`define CMDEX_OUT_imm           4'd0
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`define CMDEX_OUT_dx            4'd1
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`define CMDEX_OUT_protected     4'd2
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`define CMDEX_OUT_idle          4'd3
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(dec_ready_one && { decoder[7:1], 1'b0 } == 8'hEE) || (dec_ready_one_one && { decoder[7:1], 1'b0 } == 8'hE6)
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`CMD_OUT
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IF(decoder[3]); SET(dec_cmdex, `CMDEX_OUT_dx); ELSE(); SET(dec_cmdex, `CMDEX_OUT_imm); ENDIF();
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IF(decoder[0] == 1'b0); SET(dec_is_8bit); ENDIF();
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IF(decoder[3] == 1'b1); SET(consume_one); ELSE(); SET(consume_one_one); ENDIF();
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SET(dec_is_complex);
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IF(mc_cmd == `CMD_OUT && (mc_cmdex_last == `CMDEX_OUT_imm || mc_cmdex_last == `CMDEX_OUT_dx) && ~(io_allow_check_needed));
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    LOOP(`CMDEX_OUT_idle);
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ENDIF();
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IF(mc_cmd == `CMD_OUT && (mc_cmdex_last == `CMDEX_OUT_imm || mc_cmdex_last == `CMDEX_OUT_dx) && io_allow_check_needed);
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    CALL(`CMDEX_io_allow_1);
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    `CMDEX_OUT_protected
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    LOOP(`CMDEX_OUT_idle);
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ENDIF();
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IF(rd_cmd == `CMD_OUT); // all CMDEX
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    SET(rd_src_is_eax);
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    IF(rd_mutex_busy_eax); SET(rd_waiting); ENDIF();
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ENDIF();
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IF(exe_cmd == `CMD_OUT && (exe_cmdex == `CMDEX_OUT_dx || exe_cmdex == `CMDEX_OUT_imm));
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    SET(exe_result_push, src);
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    IF(exe_cmdex == `CMDEX_OUT_dx && exe_mutex_current[`MUTEX_EDX_BIT]); SET(exe_waiting);
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    ELSE();
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        SET(exe_glob_param_1_set);
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        SET(exe_glob_param_1_value, (exe_cmdex == `CMDEX_OUT_dx)? { 16'd0, edx[15:0] } : { 24'd0, exe_decoder[15:8] });
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    ENDIF();
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ENDIF();
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IF(exe_cmd == `CMD_OUT && exe_cmdex == `CMDEX_OUT_protected);
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    SET(exe_result_push, src);
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ENDIF();
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IF(wr_cmd == `CMD_OUT); // all CMDEX
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    IF(~(io_allow_check_needed) || wr_cmdex == `CMDEX_OUT_protected);
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        SET(write_io);
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        IF(~(write_io_for_wr_ready)); SET(wr_waiting);
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        ELSE();
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            // reset pipeline
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            SET(wr_req_reset_micro);
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            SET(wr_req_reset_rd);
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            SET(wr_req_reset_exe);
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        ENDIF();
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    ELSE();
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        SET(wr_not_finished);
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    ENDIF();
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ENDIF();
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