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PIO ADDRESS... [message #76486] Wed, 29 May 2013 23:58 Go to next message
ees is currently offline  ees
Messages: 26
Registered: May 2013
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Message-ID: <893@vax135.UUCP>
Date: Fri, 30-Nov-84 12:04:05 EST
Article-I.D.: vax135.893
Posted: Fri Nov 30 12:04:05 1984
Date-Received: Sat, 1-Dec-84 20:18:29 EST
Organization: AT&T Bell Labs, Holmdel, NJ
Lines: 13


How do I Access the PIO port from an
assembly language program not using
DSRLINK. Want to use a PAB of my own
to allow me to load and link from
X-BASIC. RS232/1 is CRU >1300 and /2
is CRU >1380. I cannot find anything
that relates to the PIO in my papers.

Gene Sampieri
ATT-BL
vax135!ees
Re: PIO ADDRESS... [message #76490 is a reply to message #76486] Wed, 29 May 2013 23:58 Go to previous message
kermit is currently offline  kermit
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Message-ID: <26500003@okstate.UUCP>
Date: Sat, 8-Dec-84 23:47:00 EST
Article-I.D.: okstate.26500003
Posted: Sat Dec  8 23:47:00 1984
Date-Received: Wed, 12-Dec-84 03:22:58 EST
References: <893@vax135.UUCP>
Lines: 17
Nf-ID: #R:vax135:-89300:okstate:26500003:000:819
Nf-From: okstate!kermit    Dec  8 22:47:00 1984

[munch...munch...munch...]

     Make it easy on yourself and use DSRLNK.  If you must use direct port
addressing than you will have to experiment to find the right 8 bits to 
write to.  Try turning your printer or whatever paralel device you are using
and load the TI-BUG (or you favorite monitor that gives access to the the
CRU bits), and write to consecutive bytes until you get a reaction from
the device.  Although this is primative at best, it will probably solve
your problem.  By the way, if you have not heard of The BUGOUT Machine
Language Monitor which I wrote for the 99/4A, you should look into getting one.
It gives you window editing features (By the bit in the case of CRU memory) 
that would allow you to watch the status of the RS232 card as you tested the 
device.


Gregg Wonderly 
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