synchroneasynchrone.py

Created by arthur-candillon

Created on May 02, 2024

622 Bytes

synchrone:
  - dépend de la validité du front 
  d'horloge
  - ne se trouve pas dans la liste
   de sensibilité du processes
asynchrone:
  - ne dépend pas de la validité du
  front d'horloge
  - se trouve dans la liste de 
  sensibilité du processes
  
An considérant le codage de la 
machine et en cas de parasite 
un blocage est possible. 
Pourquoi ? 
Le codage de la machine nécessite
3 bits (6 possibiliés) hors seules
5 sont identifiées, si la 
machine tombe dans le 6 ième état,
rien n'est pévu pour en sortir.

solution:
  when others => -- trap state 
  Sreg0 <= coherence;

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