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Found a hidden bug in the cache to bus fsm interlock.

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This commit is contained in:
Ross Thompson 2022-09-26 17:41:30 -05:00
parent f24b0feeed
commit dfe6bdd06d
1 changed files with 2 additions and 2 deletions
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4
pipelined/src/cache/cachefsm.sv vendored
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@ -139,8 +139,8 @@ module cachefsm
else if(CacheBusAck & VictimDirty) NextState = STATE_MISS_EVICT_DIRTY;
else NextState = STATE_MISS_FETCH_WDV;
//STATE_MISS_WRITE_CACHE_LINE: NextState = STATE_READY;
STATE_MISS_WRITE_CACHE_LINE: if(~(AMO | CacheRW[0])) NextState = STATE_MISS_READ_DELAY;
else NextState = STATE_READY;
STATE_MISS_WRITE_CACHE_LINE: NextState = STATE_MISS_READ_DELAY;
//else NextState = STATE_READY;
STATE_MISS_READ_DELAY: if(CPUBusy) NextState = STATE_MISS_READ_DELAY;
else NextState = STATE_READY;
STATE_MISS_EVICT_DIRTY: if(CacheBusAck) NextState = STATE_MISS_WRITE_CACHE_LINE;