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Initial Commit - Forked from PeakRDL-regblock @ a440cc19769069be831d267505da4f3789a26695

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Arnav Sacheti
2025-10-10 22:28:36 -07:00
commit 9bf5cd1e68
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214
tests/test_counter_saturate/tb_template.sv Normal file
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{% extends "lib/tb_base.sv" %}
{% block seq %}
{% sv_line_anchor %}
##1;
cb.rst <= '0;
##1;
// counter controls are the same for each sub-test
`define incr (1<<9)
`define decr (1<<10)
`define clr (1<<11)
`define set (1<<12)
`define step(n) (n<<16)
//--------------------------------------------------------------------------
// Test incrsaturate = true; decrsaturate = true;
//--------------------------------------------------------------------------
cpuif.assert_read('h0, 'h00, 'hFF);
// incrsaturate via +1
cpuif.write('h0, `set);
cpuif.assert_read('h0, 'hFF, 'hFF);
cpuif.write('h0, `decr + `step(1));
cpuif.assert_read('h0, 'hFE, 'hFF);
cpuif.write('h0, `incr + `step(1));
cpuif.assert_read('h0, 'hFF, 'hFF);
cpuif.write('h0, `incr + `step(1));
cpuif.assert_read('h0, 'hFF, 'hFF);
// decrsaturate via +1
cpuif.write('h0, `clr);
cpuif.assert_read('h0, 'h00, 'hFF);
cpuif.write('h0, `incr + `step(1));
cpuif.assert_read('h0, 'h01, 'hFF);
cpuif.write('h0, `decr + `step(1));
cpuif.assert_read('h0, 'h00, 'hFF);
cpuif.write('h0, `decr + `step(1));
cpuif.assert_read('h0, 'h00, 'hFF);
// incrsaturate via larger steps
cpuif.write('h0, `set);
cpuif.assert_read('h0, 'hFF, 'hFF);
cpuif.write('h0, `decr + `step(1));
cpuif.assert_read('h0, 'hFE, 'hFF);
cpuif.write('h0, `incr + `step(2));
cpuif.assert_read('h0, 'hFF, 'hFF);
cpuif.write('h0, `incr + `step(3));
cpuif.assert_read('h0, 'hFF, 'hFF);
cpuif.write('h0, `incr + `step(255));
cpuif.assert_read('h0, 'hFF, 'hFF);
// decrsaturate via larger steps
cpuif.write('h0, `clr);
cpuif.assert_read('h0, 'h00, 'hFF);
cpuif.write('h0, `incr + `step(1));
cpuif.assert_read('h0, 'h01, 'hFF);
cpuif.write('h0, `decr + `step(2));
cpuif.assert_read('h0, 'h00, 'hFF);
cpuif.write('h0, `decr + `step(3));
cpuif.assert_read('h0, 'h00, 'hFF);
cpuif.write('h0, `decr + `step(255));
cpuif.assert_read('h0, 'h00, 'hFF);
//--------------------------------------------------------------------------
// Test incrsaturate = 250; decrsaturate = 5;
//--------------------------------------------------------------------------
cpuif.assert_read('h4, 'h00, 'hFF);
// incrsaturate via +1
cpuif.write('h4, `set);
cpuif.assert_read('h4, 'hFF, 'hFF);
cpuif.write('h4, `decr + `step(1));
cpuif.assert_read('h4, 'hFE, 'hFF);
cpuif.write('h4, `incr + `step(1));
cpuif.assert_read('h4, 'hFA, 'hFF);
cpuif.write('h4, `incr + `step(1));
cpuif.assert_read('h4, 'hFA, 'hFF);
// decrsaturate via +1
cpuif.write('h4, `clr);
cpuif.assert_read('h4, 'h00, 'hFF);
cpuif.write('h4, `incr + `step(1));
cpuif.assert_read('h4, 'h01, 'hFF);
cpuif.write('h4, `decr + `step(1));
cpuif.assert_read('h4, 'h05, 'hFF);
cpuif.write('h4, `decr + `step(1));
cpuif.assert_read('h4, 'h05, 'hFF);
// incrsaturate via larger steps
cpuif.write('h4, `set);
cpuif.assert_read('h4, 'hFF, 'hFF);
cpuif.write('h4, `decr + `step(1));
cpuif.assert_read('h4, 'hFE, 'hFF);
cpuif.write('h4, `incr + `step(2));
cpuif.assert_read('h4, 'hFA, 'hFF);
cpuif.write('h4, `incr + `step(3));
cpuif.assert_read('h4, 'hFA, 'hFF);
cpuif.write('h4, `incr + `step(255));
cpuif.assert_read('h4, 'hFA, 'hFF);
// decrsaturate via larger steps
cpuif.write('h4, `clr);
cpuif.assert_read('h4, 'h00, 'hFF);
cpuif.write('h4, `incr + `step(1));
cpuif.assert_read('h4, 'h01, 'hFF);
cpuif.write('h4, `decr + `step(2));
cpuif.assert_read('h4, 'h05, 'hFF);
cpuif.write('h4, `decr + `step(3));
cpuif.assert_read('h4, 'h05, 'hFF);
cpuif.write('h4, `decr + `step(255));
cpuif.assert_read('h4, 'h05, 'hFF);
//--------------------------------------------------------------------------
// Test incrsaturate = <ref 255>; decrsaturate = <ref 0>;
//--------------------------------------------------------------------------
cpuif.assert_read('h8, 'h00, 'hFF);
// incrsaturate via +1
cpuif.write('h8, `set);
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'hFE, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'hFF, 'hFF);
// decrsaturate via +1
cpuif.write('h8, `clr);
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'h01, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'h00, 'hFF);
// incrsaturate via larger steps
cpuif.write('h8, `set);
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'hFE, 'hFF);
cpuif.write('h8, `incr + `step(2));
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `incr + `step(3));
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `incr + `step(255));
cpuif.assert_read('h8, 'hFF, 'hFF);
// decrsaturate via larger steps
cpuif.write('h8, `clr);
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'h01, 'hFF);
cpuif.write('h8, `decr + `step(2));
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `decr + `step(3));
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `decr + `step(255));
cpuif.assert_read('h8, 'h00, 'hFF);
//--------------------------------------------------------------------------
// Test incrsaturate = <ref 250>; decrsaturate = <ref 5>;
//--------------------------------------------------------------------------
cpuif.write('hc, 'hFA_05);
cpuif.assert_read('h4, 'h05, 'hFF);
// incrsaturate via +1
cpuif.write('h8, `set);
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'hFE, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'hFA, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'hFA, 'hFF);
// decrsaturate via +1
cpuif.write('h8, `clr);
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'h01, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'h05, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'h05, 'hFF);
// incrsaturate via larger steps
cpuif.write('h8, `set);
cpuif.assert_read('h8, 'hFF, 'hFF);
cpuif.write('h8, `decr + `step(1));
cpuif.assert_read('h8, 'hFE, 'hFF);
cpuif.write('h8, `incr + `step(2));
cpuif.assert_read('h8, 'hFA, 'hFF);
cpuif.write('h8, `incr + `step(3));
cpuif.assert_read('h8, 'hFA, 'hFF);
cpuif.write('h8, `incr + `step(255));
cpuif.assert_read('h8, 'hFA, 'hFF);
// decrsaturate via larger steps
cpuif.write('h8, `clr);
cpuif.assert_read('h8, 'h00, 'hFF);
cpuif.write('h8, `incr + `step(1));
cpuif.assert_read('h8, 'h01, 'hFF);
cpuif.write('h8, `decr + `step(2));
cpuif.assert_read('h8, 'h05, 'hFF);
cpuif.write('h8, `decr + `step(3));
cpuif.assert_read('h8, 'h05, 'hFF);
cpuif.write('h8, `decr + `step(255));
cpuif.assert_read('h8, 'h05, 'hFF);
{% endblock %}