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Fixed FSM mapping for multiple reset-like signals

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This commit is contained in:
Clifford Wolf 2014-08-10 12:04:02 +02:00
parent 9d4362990f
commit 788bd02f97
2 changed files with 43 additions and 8 deletions
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29
tests/fsm/generate.py
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@ -32,8 +32,15 @@ def random_expr(variables):
for idx in range(50):
with file('temp/uut_%05d.v' % idx, 'w') as f, redirect_stdout(f):
print('module uut_%05d(clk, rst, a, b, c, x, y, z);' % (idx))
print(' input clk, rst;')
rst2 = random.choice([False, True])
if rst2:
print('module uut_%05d(clk, rst1, rst2, rst, a, b, c, x, y, z);' % (idx))
print(' input clk, rst1, rst2;')
print(' output rst;')
print(' assign rst = rst1 || rst2;')
else:
print('module uut_%05d(clk, rst, a, b, c, x, y, z);' % (idx))
print(' input clk, rst;')
variables=['a', 'b', 'c', 'x', 'y', 'z']
print(' input%s [%d:0] a;' % (random.choice(['', ' signed']), random.randint(0, 31)))
print(' input%s [%d:0] b;' % (random.choice(['', ' signed']), random.randint(0, 31)))
@ -41,14 +48,15 @@ for idx in range(50):
print(' output reg%s [%d:0] x;' % (random.choice(['', ' signed']), random.randint(0, 31)))
print(' output reg%s [%d:0] y;' % (random.choice(['', ' signed']), random.randint(0, 31)))
print(' output reg%s [%d:0] z;' % (random.choice(['', ' signed']), random.randint(0, 31)))
print(' reg [15:0] state;')
state_bits = random.randint(5, 16);
print(' reg [%d:0] state;' % (state_bits-1))
states=[]
for i in range(random.randint(2, 10)):
n = random.randint(0, 2**16-1)
n = random.randint(0, 2**state_bits-1)
if n not in states:
states.append(n)
print(' always @(posedge clk) begin')
print(' if (rst) begin')
print(' if (%s) begin' % ('rst1' if rst2 else 'rst'))
print(' x <= %d;' % random.randint(0, 2**31-1))
print(' y <= %d;' % random.randint(0, 2**31-1))
print(' z <= %d;' % random.randint(0, 2**31-1))
@ -67,6 +75,13 @@ for idx in range(50):
random.choice(['<', '<=', '>=', '>']), random_expr(variables), next_state))
print(' end')
print(' endcase')
if rst2:
print(' if (rst2) begin')
print(' x <= a;')
print(' y <= b;')
print(' z <= c;')
print(' state <= %d;' % random.choice(states))
print(' end')
print(' end')
print(' end')
print('endmodule')
@ -76,8 +91,8 @@ for idx in range(50):
print('copy uut_%05d gold' % idx)
print('rename uut_%05d gate' % idx)
print('cd gate')
print('opt; wreduce; share; opt; fsm;;')
print('opt; wreduce; share%s; opt; fsm;;' % random.choice(['', ' -aggressive']))
print('cd ..')
print('miter -equiv -flatten -ignore_gold_x -make_outputs -make_outcmp gold gate miter')
print('sat -verify-no-timeout -timeout 20 -seq 5 -set-at 1 in_rst 1 -prove trigger 0 -prove-skip 1 -show-inputs -show-outputs miter')
print('sat -verify-no-timeout -timeout 20 -seq 5 -set-at 1 %s_rst 1 -prove trigger 0 -prove-skip 1 -show-inputs -show-outputs miter' % ('gold' if rst2 else 'in'))