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Altera_Forum's avatar
Altera_Forum
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16 years ago

Asynchronous load

This is a shift register question that I'm looking to get some light shed on. I have a 4 16bit shift registers that I'm using to detect a pattern. I feed bits into the shift regs until they match a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Not sure exactly what you mean but, if you run the simulation you can see that when readEN goes high there are two good places to look and thats where loadout goes high because that's when I'm doing the big parallel loads. The first one is ok (the first loadout = high) but the second one is not ok. I think the reason it's not ok is that it takes about 3 cycles to get something read out of memory and so if I write my code not taking this into account, I lose some values somewhere. It's just getting so bloated and complicated that its hard to figure out what to do.