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From: djh9381@ultb.isc.rit.edu (D.J. Halko)
Newsgroups: comp.os.os9
Subject: Re: Building a Multipak for OS9 on the CC3
Message-ID: <2280@ultb.isc.rit.edu>
Date: 21 Feb 90 19:06:18 GMT
References: <1261@unsvax.NEVADA.EDU>
Reply-To: djh9381@ultb.isc.rit.edu (D.J. Halko)
Organization: Information Systems and Computing @ RIT, Rochester, New York
Lines: 20

How can you construct a buffered cable?
 
 YOU CAN USE and RS232 and DISK controller at the same time... at the same
 time as using a B&B also... they are all at different addresses... just 
 yank out the ROMs and you will be in good shape... if you have a B&B autoboot
 PROM, then yank out the DEB and RS232 Pak ROM (not much use for them under
 OS9... there is nothing you can't run in OS9 that you can under DEB now
 anyway! (except some coco games... but OS9 has its share now.) The ROMS
 are the only addresses that conflict...
  
 Now, how to build one... I forgot the bus structure of the CoCo - I'll have
 to get a tech manual again... just have to stick some buffers over the data
 and address lines and have them tripped using the READ/WRITE line (I think.)

 Someone mind corecting me if I am wrong?

 As long as you are not doing the internal switching, the circuit should be
 a snap. Just a pain to wirewrap! ;-)
  
  Dave