Re: External Memory Write Cycle ...

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1 total messages Started by Ravi Masand Tue, 20 Dec 1988 19:45

#2391

Author: Ravi Masand
Date: Tue, 20 Dec 1988 19:45

16 lines
952 bytes

In article <> you write:
>When writting a single byte to external memory, what happens with
>the rest of the MemADxx lines, are they in tristate or driven by the
>Tp to a known value?  Thanks in advance.
>--
>Dario.

The transputer reference manual (Oct 1986, pg 46) says:
"A seperate MemWrB signal is provided for each byte. A word (32 bit ??)
write uses all the notMemWrB signals. If a particular byte is not to be
written, then the corresponding data outputs are tristated"

So, yes, they are tristated.

				Ravi Masand
				bellcore!thumper!rtm1

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