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Check: counting a stalled transaction
Distinguish valid duration from actual handshake count.
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A source presents tag6 with valid=1. Ready is 0,0,1 on three consecutive edges, and tag and data stay unchanged. No reset occurs.
How often does tag6 transfer, and when may the source advance to the next item?
Only the third edge has both valid and ready high. The first two edges are stalls requiring a stable payload. After delivery, the source may keep valid high while offering the next transaction.
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