user
50 lines
1.4 KiB
Python
Executable File
50 lines
1.4 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Independent golden models for L03; no RTL implementation is imported."""
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import sys
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def task01() -> None:
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counter = 0
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previous = 0
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pulses = 0
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consecutive = 0
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for _ in range(16):
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enable = int(counter == 3)
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counter = 0 if enable else counter + 1
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pulses += enable
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consecutive += int(enable and previous)
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previous = enable
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assert (pulses, consecutive, counter) == (4, 0, 0)
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print("PASS task01 pulses=4 consecutive=0 final_count=0")
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def task02() -> None:
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sequence = []
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counter = 0
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for _ in range(16):
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counter = (counter + 1) & 0xF
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sequence.append((counter >> 2) & 1)
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edges = [index + 1 for index in range(16) if sequence[index] != (sequence[index - 1] if index else 0)]
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assert edges == [4, 8, 12, 16]
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print("PASS task02 led_edges=4,8,12,16 period=8")
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def task03() -> None:
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pattern = [0x1, 0x2, 0x4, 0x8, 0x8, 0x4, 0x2, 0x1]
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observed = [pattern[index & 7] for index in range(10)]
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assert observed == [1, 2, 4, 8, 8, 4, 2, 1, 1, 2]
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print("PASS task03 pattern=1,2,4,8,8,4,2,1 wrap=1,2")
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TASKS = {
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"task01_clock_enable": task01,
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"task02_counter_blinker": task02,
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"task03_pattern_rom": task03,
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}
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if len(sys.argv) != 2 or sys.argv[1] not in TASKS:
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raise SystemExit(f"usage: {sys.argv[0]} {'|'.join(TASKS)}")
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TASKS[sys.argv[1]]()
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