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From: gheller@YODA.EECS.WSU.EDU (Geoffrey Heller - CS216)
Newsgroups: comp.sys.amiga.hardware
Subject: designing hardware for the external drive port.
Message-ID: <9101122105.AA04848@yoda.eecs.wsu.edu>
Date: 12 Jan 91 21:05:50 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 13

Hello Amiga hardware hackers and developers!

I have been puzzling over this question for some time now...
I would like to use an Octal Buffer/Line Driver in a circut I am building which
uses the Amiga external disk port.  This port requires Open Collector and
Open Drain devices to be present.  I am wondering if I can use a 74HCT240 at
this point to read and drive the OC and OD.  Also, is the float state on this
device going to be valid?  If I use 4.7k pull-ups on the OC inputs and 4.7k
pull-downs on the OD outputs then this should work fine, right?

Thanks in advance for your help.

 - gheller@yoda.eecs.wsu.edu