pacoblaze.v.html

和picoblaze完全兼容的mcu ip core

<a name="55"></a><span class=M>`define</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_alu.v.html#43">operation_is</a>(x) (idu_operation == (x))
<span class=M>`endif</span>


<span class=C>/** Top PacoBlaze module */</span>
<a name="pacoblaze3m"></a><a  href="compare3m_tb.v.html#compare3m_tb_dut_0"><img alt="[Up: compare3m_tb dut_0]" align=bottom border=0 src="v2html-up.gif"></a><a  href="pacoblaze3m_tb.v.html#pacoblaze3m_tb_dut"><img alt="[Up: pacoblaze3m_tb dut]" align=bottom border=0 src="v2html-up.gif"></a>
<span class=K>module</span> <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="compare3m_tb.v.html#6">PACOBLAZE</a>(
  <a  onClick="return qs(event,this,1)"  class=SO href="#71">address</a>, <a  onClick="return qs(event,this,2)"  class=SI href="#72">instruction</a>,
  <a  onClick="return qs(event,this,3)"  class=SO href="#73">port_id</a>,
  <a  onClick="return qs(event,this,4)"  class=SOR href="#74">write_strobe</a>, <a  onClick="return qs(event,this,5)"  class=SO href="#75">out_port</a>,
  <a  onClick="return qs(event,this,6)"  class=SOR href="#76">read_strobe</a>, <a  onClick="return qs(event,this,7)"  class=SI href="#77">in_port</a>,
  <a  onClick="return qs(event,this,8)"  class=SI href="#78">interrupt</a>,
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#40">HAS_INTERRUPT_ACK</a>
  <a  onClick="return qs(event,this,9)"  class=SOR href="#80">interrupt_ack</a>,
<span class=M>`endif</span>
  <a  onClick="return qs(event,this,10)"  class=SI href="#82">reset</a>, <a  onClick="return qs(event,this,11)"  class=SI href="#83">clk</a>
);
<a name="71"></a><span class=K>output</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#73">code_depth</a>-1:0] <a  onClick="return qs(event,this,1)"  class=SO href="#239">address</a>; <span class=C>///&lt; Address output
</span><a name="72"></a><span class=K>input</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#72">code_width</a>-1:0] <a  onClick="return qs(event,this,2)"  class=SI href="compare3m_tb.v.html#54">instruction</a>; <span class=C>///&lt; Instruction input
</span><a name="73"></a><span class=K>output</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#82">port_depth</a>-1:0] <a  onClick="return qs(event,this,3)"  class=SO href="#242">port_id</a>; <span class=C>///&lt; Port address
</span><a name="74"></a><span class=K>output</span> <a  onClick="return qs(event,this,4)"  class=SOR href="#350">write_strobe</a>; <span class=C>///&lt; Port output strobe
</span><a name="75"></a><span class=K>output</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#81">port_width</a>-1:0] <a  onClick="return qs(event,this,5)"  class=SO href="#241">out_port</a>; <span class=C>///&lt; Port output
</span><a name="76"></a><span class=K>output</span> <a  onClick="return qs(event,this,6)"  class=SOR href="#346">read_strobe</a>; <span class=C>///&lt; Port input strobe
</span><a name="77"></a><span class=K>input</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#81">port_width</a>-1:0] <a  onClick="return qs(event,this,7)"  class=SI href="compare3m_tb.v.html#58">in_port</a>; <span class=C>///&lt; Port input
</span><a name="78"></a><span class=K>input</span> <a  onClick="return qs(event,this,8)"  class=SI href="compare3m_tb.v.html#60">interrupt</a>; <span class=C>///&lt; Interrupt request
</span><span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#40">HAS_INTERRUPT_ACK</a>
<a name="80"></a><span class=K>output</span> <a  onClick="return qs(event,this,9)"  class=SOR href="#416">interrupt_ack</a>; <span class=C>///&lt; Interrupt acknowledge (output)
</span><span class=M>`endif</span>
<a name="82"></a><span class=K>input</span> <a  onClick="return qs(event,this,10)"  class=SI href="compare3m_tb.v.html#52">reset</a>; <span class=C>///&lt; Reset input
</span><a name="83"></a><span class=K>input</span> <a  onClick="return qs(event,this,11)"  class=SI href="compare3m_tb.v.html#51">clk</a>; <span class=C>///&lt; Clock input
</span>
<span class=C>/* Output registers */</span>
<span class=K>reg</span> <a  onClick="return qs(event,this,4)"  class=SOR href="#74">write_strobe</a>, <a  onClick="return qs(event,this,6)"  class=SOR href="#76">read_strobe</a>;

<span class=C>/* Processor registers and signals */</span>
<a name="89"></a><span class=K>reg</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#73">code_depth</a>-1:0] <a  onClick="return qs(event,this,12)"  class=SR href="#422">program_counter</a>; <span class=C>///&lt; Program counter
</span><a name="90"></a><span class=K>reg</span> <a  onClick="return qs(event,this,13)"  class=SR href="#421">timing_control</a>; <span class=C>///&lt; Timing control register
</span>
<a name="92"></a><span class=K>reg</span> <a  onClick="return qs(event,this,14)"  class=SR href="#339">zero</a>; <span class=C>///&lt; Zero flag
</span><a name="93"></a><span class=K>reg</span> <a  onClick="return qs(event,this,15)"  class=SR href="#339">carry</a>; <span class=C>///&lt; Carry flag
</span><a name="94"></a><span class=K>reg</span> <a  onClick="return qs(event,this,16)"  class=SR href="#340">interrupt_enable</a>; <span class=C>///&lt; Interrupt enable
</span><a name="95"></a><span class=K>reg</span> <a  onClick="return qs(event,this,17)"  class=SR href="#424">interrupt_latch</a>; <span class=C>///&lt; Interrupt latch hold
</span><span class=K>reg</span> <a  onClick="return qs(event,this,9)"  class=SOR href="#80">interrupt_ack</a>; <span class=C>///&lt; Interrupt acknowledge
</span><a name="97"></a><span class=K>reg</span> <a  onClick="return qs(event,this,18)"  class=SR href="#438">zero_saved</a>; <span class=C>///&lt; Interrupt-saved zero flag
</span><a name="98"></a><span class=K>reg</span> <a  onClick="return qs(event,this,19)"  class=SR href="#438">carry_saved</a>; <span class=C>///&lt; Interrupt-saved carry flag
</span><span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#36">HAS_RESET_LATCH</a>
<a name="100"></a><span class=K>reg</span> [1:0] <a  onClick="return qs(event,this,20)"  class=SR href="#397">reset_latch</a>; <span class=C>///&lt; Reset latch
</span><span class=M>`endif</span>
<a name="102"></a><span class=K>reg</span> <a  onClick="return qs(event,this,21)"  class=SR href="#335">zero_carry_write_enable</a>; <span class=C>///&lt; Zero/Carry update
</span>
<a name="104"></a><span class=K>wire</span> <a  onClick="return qs(event,this,22)"  class=SW href="#246">internal_reset</a>; <span class=C>///&lt; Internal reset signal
</span><a name="105"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#73">code_depth</a>-1:0] <a  onClick="return qs(event,this,23)"  class=SW href="#268">program_counter_source</a>, <a  onClick="return qs(event,this,24)"  class=SW href="#274">program_counter_next</a>; <span class=C>///&lt; Next program counter logic
</span><a name="106"></a><span class=K>wire</span> <a  onClick="return qs(event,this,25)"  class=SW href="#251">conditional_match</a>; <span class=C>///&lt; True when unconditional or flags match
</span><a name="107"></a><span class=K>wire</span> <a  onClick="return qs(event,this,26)"  class=SW href="#280">interrupt_assert</a>; <span class=C>///&lt; True when interrupt condition is met
</span>

<span class=C>/* IDU - Instruction Decode Unit */</span>
<a name="111"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#149">operation_width</a>-1:0] <a  onClick="return qs(event,this,27)"  class=SW href="#111">idu_operation</a>;
<a name="112"></a><span class=K>wire</span> [2:0] <a  onClick="return qs(event,this,28)"  class=SW href="#112">idu_shift_operation</a>;
<a name="113"></a><span class=K>wire</span> <a  onClick="return qs(event,this,29)"  class=SW href="#113">idu_shift_direction</a>, <a  onClick="return qs(event,this,30)"  class=SW href="#113">idu_shift_constant</a>;
<a name="114"></a><span class=K>wire</span> <a  onClick="return qs(event,this,31)"  class=SW href="#114">idu_operand_selection</a>;
<a name="115"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#110">register_depth</a>-1:0] <a  onClick="return qs(event,this,32)"  class=SW href="#115">idu_x_address</a>, <a  onClick="return qs(event,this,33)"  class=SW href="#115">idu_y_address</a>;
<a name="116"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#60">operand_width</a>-1:0] <a  onClick="return qs(event,this,34)"  class=SW href="#116">idu_implied_value</a>;
<a name="117"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#82">port_depth</a>-1:0] <a  onClick="return qs(event,this,35)"  class=SW href="#117">idu_port_address</a>;
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#41">HAS_SCRATCH_MEMORY</a>
<a name="119"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#119">scratch_depth</a>-1:0] <a  onClick="return qs(event,this,36)"  class=SW href="#119">idu_scratch_address</a>;
<span class=M>`endif</span>
<a name="121"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#73">code_depth</a>-1:0] <a  onClick="return qs(event,this,37)"  class=SW href="#121">idu_code_address</a>;
<a name="122"></a><span class=K>wire</span> <a  onClick="return qs(event,this,38)"  class=SW href="#122">idu_conditional</a>;
<a name="123"></a><span class=K>wire</span> [1:0] <a  onClick="return qs(event,this,39)"  class=SW href="#123">idu_condition_flags</a>;
<a name="124"></a><span class=K>wire</span> <a  onClick="return qs(event,this,40)"  class=SW href="#124">idu_interrupt_enable</a>;
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_idu_tb.v.html#36">HAS_DEBUG</a>
<span class=K>wire</span> [8*<span class=D>`idu_debug_width</span>:1] idu_debug;
<span class=K>wire</span> [8*<span class=D>`alu_debug_width</span>:1] alu_debug;
<span class=M>`endif</span>


<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze1.v.html#13">PACOBLAZE_IDU</a> idu(
  <a  onClick="return qs(event,this,2)"  class=SI href="#72">instruction</a>,
  <a  onClick="return qs(event,this,27)"  class=SW href="#111">idu_operation</a>,
  <a  onClick="return qs(event,this,28)"  class=SW href="#112">idu_shift_operation</a>, <a  onClick="return qs(event,this,29)"  class=SW href="#113">idu_shift_direction</a>, <a  onClick="return qs(event,this,30)"  class=SW href="#113">idu_shift_constant</a>,
  <a  onClick="return qs(event,this,31)"  class=SW href="#114">idu_operand_selection</a>,
  <a  onClick="return qs(event,this,32)"  class=SW href="#115">idu_x_address</a>, <a  onClick="return qs(event,this,33)"  class=SW href="#115">idu_y_address</a>,
  <a  onClick="return qs(event,this,34)"  class=SW href="#116">idu_implied_value</a>, <a  onClick="return qs(event,this,35)"  class=SW href="#117">idu_port_address</a>,
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#41">HAS_SCRATCH_MEMORY</a>
  <a  onClick="return qs(event,this,36)"  class=SW href="#119">idu_scratch_address</a>,
<span class=M>`endif</span>
  <a  onClick="return qs(event,this,37)"  class=SW href="#121">idu_code_address</a>,
  <a  onClick="return qs(event,this,38)"  class=SW href="#122">idu_conditional</a>, <a  onClick="return qs(event,this,39)"  class=SW href="#123">idu_condition_flags</a>,
  <a  onClick="return qs(event,this,40)"  class=SW href="#124">idu_interrupt_enable</a>
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_idu_tb.v.html#36">HAS_DEBUG</a>
  , idu_debug
<span class=M>`endif</span>
);


<span class=C>/* ALU - Arithmetic-Logic Unit */</span>
<a name="151"></a><span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#60">operand_width</a>-1:0] <a  onClick="return qs(event,this,41)"  class=SW href="#151">alu_result</a>, <a  onClick="return qs(event,this,42)"  class=SW href="#291">alu_operand_a</a>, <a  onClick="return qs(event,this,43)"  class=SW href="#292">alu_operand_b</a>;
<a name="152"></a><span class=K>wire</span> <a  onClick="return qs(event,this,44)"  class=SW href="#152">alu_zero_out</a>, <a  onClick="return qs(event,this,45)"  class=SW href="#152">alu_carry_out</a>;
<span class=M>`ifdef</span> <span class=D>HAS_WIDE_ALU</span>
<span class=K>wire</span> [<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#60">operand_width</a>-1:0] alu_resultw, alu_operand_u, alu_operand_v;
<span class=M>`endif</span>

<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze1.v.html#14">PACOBLAZE_ALU</a> alu(
  <a  onClick="return qs(event,this,27)"  class=SW href="#111">idu_operation</a>,
  <a  onClick="return qs(event,this,28)"  class=SW href="#112">idu_shift_operation</a>, <a  onClick="return qs(event,this,29)"  class=SW href="#113">idu_shift_direction</a>, <a  onClick="return qs(event,this,30)"  class=SW href="#113">idu_shift_constant</a>,
  <a  onClick="return qs(event,this,41)"  class=SW href="#151">alu_result</a>, <a  onClick="return qs(event,this,42)"  class=SW href="#151">alu_operand_a</a>, <a  onClick="return qs(event,this,43)"  class=SW href="#151">alu_operand_b</a>,
<span class=M>`ifdef</span> <span class=D>HAS_WIDE_ALU</span>
  alu_resultw, alu_operand_u, alu_operand_v,
<span class=M>`endif</span>
  <a  onClick="return qs(event,this,15)"  class=SR href="#93">carry</a>, <a  onClick="return qs(event,this,44)"  class=SW href="#152">alu_zero_out</a>, <a  onClick="return qs(event,this,45)"  class=SW href="#152">alu_carry_out</a>
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_idu_tb.v.html#36">HAS_DEBUG</a>
  , alu_debug
<span class=M>`endif</span>
);

<a name="170"></a><span class=K>wire</span> <a  onClick="return qs(event,this,46)"  class=SW href="#170">is_alu</a> =
  <span class=C>// `operation_is(`op_load)
</span>  <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#477">op_and</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#478">op_or</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#482">op_xor</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#475">op_add</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#476">op_addcy</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#480">op_sub</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#481">op_subcy</a>)
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#479">op_rs</a>)
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#42">HAS_COMPARE_OPERATION</a>
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#490">op_compare</a>)
<span class=M>`endif</span>
<span class=M>`ifdef</span> <a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#43">HAS_TEST_OPERATION</a>
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="#55">operation_is</a>(<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_inc.v.html#491">op_test</a>)
<span class=M>`endif</span>
<span class=M>`ifdef</span> <span class=D>HAS_MUL_OPERATION</span>
  || <span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_alu.v.html#43">operation_is</a>(<span class=D>`op_mul</span>)
<span class=M>`endif</span>
<span class=M>`ifdef</span> <span class=D>HAS_WIDE_ALU</span>
  ||<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_alu.v.html#43">operation_is</a>(<span class=D>`op_addw</span>)
  ||<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_alu.v.html#43">operation_is</a>(<span class=D>`op_addwcy</span>)
  ||<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_alu.v.html#43">operation_is</a>(<span class=D>`op_subw</span>)
  ||<span class=D>`</span><a  onClick="return qs(event,this,0)"  class=D href="pacoblaze_alu.v.html#43">operation_is</a>(<span class=D>`op_subwcy</span>)
<span class=M>`endif</span>
  ;