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From: steveh@tasman.cc.utas.edu.au (Steven Howell)
Newsgroups: sci.electronics
Subject: Resistors & Dynamic Memory Chips
Message-ID: <steveh.672590456@tasman>
Date: 25 Apr 91 14:40:56 GMT
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	Evening peoples.
	I have been studying various memory boards an have noticed a
common difference. on some boards there are resistor in series with the 
data and CAS RAS data lines, whilst others do not have them.

The resistance of these current limiting devices is only 68ohms!


does anyone know why they are there. Why can't you directly interface the bus
to the chip, like some have done. Is it bad?
What would happen if they were removed and replaced with direct links.

can someone please enlighten me on this topic.


thanks in advance


steve h