Den Wed, 14 Mar 2018 19:58:14 +0100 skrev Gerrit Heitsch <gerrit@laosinh.s.bawue.de>: > On 03/14/2018 07:01 PM, smf wrote: > > On 14/03/2018 17:39, Gerrit Heitsch wrote: > > > >> You can't leave AEC high all the time even if you run the RAM at > >> double speed compared to now. The 8501 will not take its address > >> lines offline, so when TED does an access, you will have to take > >> AEC LOW to prevent bus drivers in CPU und TED fighting each other. > >> > > I was assuming you'd buffer them as part of the multiplexing and > > make them think they were the only things connected to the RAM. > > > > If you keep the CPU and TED clocked together then they will both > > start their accesses at the same time, you'd then satisfy them both > > in the same time the original dram would satisfy one. > > That will produce problems with CPU access to TED registers. I assume that the CPU can tolerate a slow-down of the clock until TED is ready for access to it's registers. -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies.Received on 2018-03-14 22:35:55
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