keyboard1.drc.rpt

来自「VHDL基础的编程源代码」· RPT 代码 · 共 348 行 · 第 1/3 页

Info: Running Quartus II Design Assistant
    Info: Version 5.1 Build 176 10/26/2005 SJ Full Version
    Info: Processing started: Fri Apr 27 11:49:46 2007
Info: Command: quartus_drc --read_settings_files=off --write_settings_files=off keyboard1 -c keyboard1
Critical Warning: Design Assistant warning: Design should not contain combinational loops. Found 12 combinational loop(s) related to this rule.
    Critical Warning: Combinational loop 1 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|previous_row_data[2]~106"
    Critical Warning: Combinational loop 2 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|previous_row_data[0]~110"
    Critical Warning: Combinational loop 3 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|previous_row_data[3]~118"
    Critical Warning: Combinational loop 4 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|previous_row_data[1]~114"
    Critical Warning: Combinational loop 5 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[2]~162"
    Critical Warning: Combinational loop 6 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[1]~166"
    Critical Warning: Combinational loop 7 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[3]~170"
    Critical Warning: Combinational loop 8 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[0]~174"
    Critical Warning: Combinational loop 9 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[6]~178"
    Critical Warning: Combinational loop 10 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[7]~182"
    Critical Warning: Combinational loop 11 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[5]~186"
    Critical Warning: Combinational loop 12 contains 1 node(s)
        Critical Warning: Node  "delay_kbtingle:inst4|key_data[4]~190"
Critical Warning: Design Assistant warning: Clock signal should be a global signal. Found 1 node(s) related to this rule.
    Critical Warning: Node  "counter:inst|carrier"
Critical Warning: Design Assistant warning: Combinational logic used as reset signal should be synchronized. Found 1 node(s) related to this rule.
    Critical Warning: Node  "delay_kbtingle:inst4|scan_start~0"
Critical Warning: Design Assistant warning: Synchronous port and reset port of same register should not be driven by same signal source. Found 7 node(s) related to this rule.
    Critical Warning: Node  "ledarray_drv:inst8|row[7]"
    Critical Warning: Node  "ledarray_drv:inst8|row[1]"
    Critical Warning: Node  "ledarray_drv:inst8|row[5]"
    Critical Warning: Node  "ledarray_drv:inst8|row[4]"
    Critical Warning: Node  "ledarray_drv:inst8|row[3]"
    Critical Warning: Node  "ledarray_drv:inst8|row[6]"
    Critical Warning: Node  "ledarray_drv:inst8|row[2]"
Warning: Design Assistant warning: Design should not contain ripple clock structures. Found 1 ripple clock structure(s) related to this rule.
    Warning: Structure 1 contains 19 node(s)
        Warning: Node  "counter:inst|carrier"
        Warning: Node  "counter:inst1|carrier"
        Warning: Node  "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[0]"
        Warning: Node  "delay_kbtingle:inst4|scan_start"
        Warning: Node  "delay_kbtingle:inst4|scan_start~0"
        Warning: Node  "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[3]"
        Warning: Node  "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[2]"
        Warning: Node  "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[1]"
        Warning: Node  "counter:inst2|carrier"
        Warning: Node  "counter:inst2|delay_counter[1]"
        Warning: Node  "counter:inst2|delay_counter[3]"
        Warning: Node  "counter:inst2|delay_counter[2]"
        Warning: Node  "counter:inst2|delay_counter[0]"
        Warning: Node  "keyboard_scan:inst3|row_counter[0]"
        Warning: Node  "keyboard_scan:inst3|row_counter[1]"
        Warning: Node  "keyboard_scan:inst3|row_select[3]"
        Warning: Node  "keyboard_scan:inst3|row_select[2]"
        Warning: Node  "keyboard_scan:inst3|row_select[1]"
        Warning: Node  "keyboard_scan:inst3|row_select[0]"
Warning: Design Assistant warning: Clock signal source should drive only input clock ports. Found 3 nodes related to this rule.
    Warning: Node  "counter:inst|carrier"
    Warning: Node  "counter:inst1|carrier"
    Warning: Node  "counter:inst2|carrier"
Warning: Design Assistant warning: External reset should be synchronized using two cascaded registers. Found 1 node(s) related to this rule.
    Warning: Node  "reset"
Info: Design Assistant information: Nodes with more than specified number of fan-outs. Found 8 node(s) with highest fan-out.
    Info: Node "reset" has 72 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[2]" has 38 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[4]" has 37 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[0]" has 31 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[1]" has 45 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[3]" has 39 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[5]" has 32 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[6]" has 40 fan-out(s)
Info: Design Assistant information: Top nodes with highest fan-out. Found 50 node(s) with highest fan-out.
    Info: Node "reset" has 72 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[1]" has 45 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[6]" has 40 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[3]" has 39 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[2]" has 38 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[4]" has 37 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[5]" has 32 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[0]" has 31 fan-out(s)
    Info: Node "counter:inst|carrier" has 27 fan-out(s)
    Info: Node "ledarray_drv:inst8|next_cs[7]" has 26 fan-out(s)
    Info: Node "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[1]" has 17 fan-out(s)
    Info: Node "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[2]" has 17 fan-out(s)
    Info: Node "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[0]" has 17 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[1]~166" has 17 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[0]~174" has 17 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[2]~162" has 16 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[7]~182" has 16 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[5]~186" has 16 fan-out(s)
    Info: Node "delay_kbtingle:inst4|scan_start" has 16 fan-out(s)
    Info: Node "row_data[0]" has 16 fan-out(s)
    Info: Node "clock" has 16 fan-out(s)
    Info: Node "counter:inst|delay_counter[0]" has 16 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[6]~178" has 15 fan-out(s)
    Info: Node "delay_kbtingle:inst4|key_data[3]~170" has 15 fan-out(s)
    Info: Node "delay_kbtingle:inst4|lpm_counter:currentState_rtl_0|dffs[3]" has 15 fan-out(s)
    Info: Node "row_data[2]" has 15 fan-out(s)
    Info: Node "delay_kbtingle:inst4|previous_row_data[0]~110" has 15 fan-out(s)
    Info: Node "row_data[1]" has 15 fan-out(s)
    Info: Node "row_data[3]" has 15 fan-out(s)
    Info: Node "counter:inst|delay_counter[1]" has 15 fan-out(s)
    Info: Truncated list of Design Assistant messages to 30 messages. Go to sections under Design Assistant section of Compilation Report for complete lists of Design Assistant messages generated.
Info: Design Assistant information: finished post-fitting analysis of current design -- generated 58 information messages and 26 warning messages
Info: Quartus II Design Assistant was successful. 0 errors, 64 warnings
    Info: Processing ended: Fri Apr 27 11:49:47 2007
    Info: Elapsed time: 00:00:02