__projnav.log

用VHDL 编写的一个16位的cpu 设计方案

WARNING:Xst:737 - Found 16-bit latch for signal <ABUS>.
WARNING:Xst:737 - Found 16-bit latch for signal <DBUS>.
    Found 1-bit register for signal <nBHE>.
    Found 1-bit register for signal <nMREQ>.
    Found 1-bit register for signal <nRD>.
    Found 1-bit register for signal <nWR>.
    Summary:
	inferred   4 D-type flip-flop(s).
Unit <memcontrol> synthesized.


Synthesizing Unit <exe>.
    Related source file is F:/cpu/exe.vhd.
WARNING:Xst:647 - Input <clk> is never used.
WARNING:Xst:647 - Input <mdrin<15:8>> is never used.
WARNING:Xst:1305 - Output <mdrout<15:8>> is never assigned. Tied to value 00000000.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_0>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_7>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_6>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_5>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_4>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_3>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_2>.
WARNING:Xst:737 - Found 8-bit latch for signal <reg_1>.
WARNING:Xst:737 - Found 8-bit latch for signal <input1>.
WARNING:Xst:737 - Found 8-bit latch for signal <input2>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_15>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_14>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_13>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_12>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_11>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_10>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_9>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_8>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_7>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_6>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_5>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_4>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_3>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_2>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_1>.
WARNING:Xst:737 - Found 1-bit latch for signal <mar_0>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_7>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_6>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_5>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_4>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_3>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_2>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_1>.
WARNING:Xst:737 - Found 1-bit latch for signal <mdrout_0>.
    Found 1-bit tristate buffer for signal <rd>.
    Found 1-bit tristate buffer for signal <wr>.
    Found 8-bit 8-to-1 multiplexer for signal <$n0001> created at line 64.
    Found 8-bit 8-to-1 multiplexer for signal <$n0003> created at line 64.
    Found 104 1-bit 2-to-1 multiplexers.
    Summary:
	inferred 120 Multiplexer(s).
	inferred   2 Tristate(s).
Unit <exe> synthesized.


Synthesizing Unit <GetInstr>.
    Related source file is F:/cpu/GetInstr.vhd.
WARNING:Xst:646 - Signal <ir<0>> is assigned but never used.
    Found 16-bit register for signal <mar>.
    Found 3-bit register for signal <r1>.
    Found 3-bit register for signal <r2>.
    Found 1-bit register for signal <rd>.
    Found 1-bit register for signal <wr>.
    Found 8-bit register for signal <imm>.
    Found 4-bit register for signal <opcode>.
    Found 15-bit adder for signal <$n0025> created at line 41.
    Found 16-bit register for signal <ir>.
    Found 16-bit register for signal <pc>.
    Found 16 1-bit 2-to-1 multiplexers.
    Summary:
	inferred  68 D-type flip-flop(s).
	inferred   1 Adder/Subtracter(s).
	inferred  16 Multiplexer(s).
Unit <GetInstr> synthesized.


Synthesizing Unit <timer>.
    Related source file is F:/cpu/timer.vhd.
    Found finite state machine <FSM_0> for signal <q>.
    -----------------------------------------------------------------------
    | States             | 5                                              |
    | Transitions        | 5                                              |
    | Inputs             | 0                                              |
    | Outputs            | 5                                              |
    | Clock              | clk (rising_edge)                              |
    | Reset              | rst (positive)                                 |
    | Reset type         | asynchronous                                   |
    | Reset State        | 00001                                          |
    | Encoding           | automatic                                      |
    | Implementation     | LUT                                            |
    -----------------------------------------------------------------------
    Found 1-bit register for signal <ex>.
    Found 3-bit register for signal <t>.
    Summary:
	inferred   1 Finite State Machine(s).
	inferred   1 D-type flip-flop(s).
Unit <timer> synthesized.


Synthesizing Unit <cpu>.
    Related source file is F:/cpu/cpu.vhd.
Unit <cpu> synthesized.


=========================================================================
HDL Synthesis Report

Macro Statistics
# FSMs                             : 1
# Registers                        : 30
  1-bit register                   : 23
  3-bit register                   : 3
  16-bit register                  : 2
  4-bit register                   : 1
  8-bit register                   : 1
# Latches                          : 39
  8-bit latch                      : 11
  16-bit latch                     : 4
  1-bit latch                      : 24
# Multiplexers                     : 53
  2-to-1 multiplexer               : 51
  8-bit 8-to-1 multiplexer         : 2
# Tristates                        : 2
  1-bit tristate buffer            : 2
# Adders/Subtractors               : 2
  8-bit addsub                     : 1
  15-bit adder                     : 1

=========================================================================

=========================================================================
*                       Advanced HDL Synthesis                          *
=========================================================================

INFO:Xst:1767 - HDL ADVISOR - Resource sharing has identified that some arithmetic operations in this design can share the same physical resources for reduced device utilization. For improved clock frequency you may try to disable resource sharing.
Selecting encoding for FSM_0 ...
Optimizing FSM <FSM_0> on signal <q> with one-hot encoding.

=========================================================================
*                         Low Level Synthesis                           *
=========================================================================
WARNING:Xst:1291 - FF/Latch <ir_0> is unconnected in block <GetInstr>.
WARNING:Xst:1291 - FF/Latch <rd> is unconnected in block <u2>.
WARNING:Xst:1291 - FF/Latch <wr> is unconnected in block <u2>.

Optimizing unit <cpu> ...

Optimizing unit <GetInstr> ...

Optimizing unit <timer> ...

Optimizing unit <memcontrol> ...

Optimizing unit <alu> ...

Optimizing unit <exe> ...
Loading device for application Xst from file 'v200.nph' in environment C:/Xilinx.

Mapping all equations...
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_4> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_7> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_8> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_8> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_r2_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_11> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_11> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_r1_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_15> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_15> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_opcode_3> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_pc_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u2_rd> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u2_wr> is unconnected in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_3> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_3> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_4> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_3> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_4> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_imm_6> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_r2_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_7> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_7> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_r2_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_9> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_9> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_r1_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_10> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_10> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_r1_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_12> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_12> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_opcode_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_13> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_13> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_opcode_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_14> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_14> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_opcode_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr0out_6> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_ir_6> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u2_mar_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_13> (without init value) is constant in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_13> is unconnected in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_15> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_14> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_2> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_3> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_4> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_6> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_7> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_8> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_9> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_10> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_11> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_DBUS_12> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_ABUS_0> (without init value) is constant in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_15> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_14> is unconnected in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u4_mdr1out_1> (without init value) is constant in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_8> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_9> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_10> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_11> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr1out_12> is unconnected in block <cpu>.
WARNING:Xst:1291 - FF/Latch <u4_mdr0out_0> is unconnected in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_7_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_6_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_5_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_4_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_3_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_2_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_reg_1_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_15> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_14> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_13> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_12> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_11> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_10> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_9> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_8> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_7> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_6> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_5> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_4> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_3> (without init value) is constant in block <cpu>.
WARNING:Xst:1710 - FF/Latch  <u3_mar_2> (without init value) is constant in block <cpu>.