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Old 26 August 2018, 13:57   #218
plasmab
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Join Date: Sep 2016
Location: UK
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The BBC B specifically used the 4816AP-3

http://mdfs.net/Info/Comp/BBC/Circuits/BBC/bbc.gif

The manual says..

Access Time From RAS: 100ns
Access Time From CAS: 55ns

So my assertion stands.

I accept that you would need time either side for setup etc.

Another way to put it would be that you would have been stupid to use that RAM with the 68000 as fast ram.. because you'd never max it out.

EDIT: There is another time quoted below for random access.. 235ns.. thats with a refresh i believe.

Last edited by plasmab; 26 August 2018 at 14:11.
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