mips_top.tan.summary

是verilog做的简化mips32指令系统。 有些小问题

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Timing Analyzer Summary
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Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : 2.856 ns
From           : reset
To             : clock_gen:clocks|state.S3
From Clock     : --
To Clock       : clock
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 12.482 ns
From           : Ifetch32:ifetch|lpm_rom:prgrom|altrom:srom|altsyncram:rom_block|altsyncram_7201:auto_generated|q_a[26]
To             : instruction[26]
From Clock     : clock
To Clock       : --
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : 2.383 ns
From           : reset
To             : Ifetch32:ifetch|next_pc[20]
From Clock     : --
To Clock       : clock
Failed Paths   : 0

Type           : Clock Setup: 'clock'
Slack          : N/A
Required Time  : None
Actual Time    : 76.27 MHz ( period = 13.112 ns )
From           : ALU32:alu|s1[19]
To             : ALU32:alu|shifter32_var:myshift|outreg[3]
From Clock     : clock
To Clock       : clock
Failed Paths   : 0

Type           : Clock Hold: 'clock'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : ALUDecoder:aludecoder|aluctrl[2]
To             : ALU32:alu|result[31]
From Clock     : clock
To Clock       : clock
Failed Paths   : 3754

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 3754

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