<html theme="default-light" iconset="color"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head><body text="#000000">I'm 99.9% sure you need to go through MMJ. I
used to put out a lot of these for POS retail, and I can never remember
using the DB-25 for anything. <br>
<br>
I think the terminals came in the box with a short MMJ cable and an MMJ
to DB-25 adapter, or we bought them at the same time we bought the
terminals. They were DEC branded, and I may have a couple in my stash
since I saved a 420 from there. This was all 20+ years ago, but if you
really need an adapter and/or cable let me know and I'll dig.<br>
<br>
Steve<br>
<span>
</span><br>
<blockquote type="cite"
cite="mid:E4B9AF1F-2DAD-4283-A12E-A3DA8843F3A3@gmail.com" style="border:
0px none ! important;">
<div xmlns="http://www.w3.org/1999/xhtml" class="__pbConvHr"
style="margin:30px 25px 10px 25px;"><div
style="width:100%;border-top:2px solid
rgba(146,154,163,0.7);padding-top:10px;"> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:49%;">
<a style="color:#485664
!important;padding-right:6px;font-weight:500;text-decoration:none
!important;" href="mailto:lionel4287@gmail.com" moz-do-not-send="true">Lionel
Peterson</a></div> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:48%;text-align:
right;"> <font color="#909AA4"><span style="padding-left:6px">May
2, 2022 at 7:39 PM</span></font></div> </div></div>
<div xmlns="http://www.w3.org/1999/xhtml" class="__pbConvBody"
__pbrmquotes="true"
style="color:#909AA4;margin-left:24px;margin-right:24px;"><div>I
researched this a while ago, but now I can't find it: can I connect to a
VT420 terminal through the DB25 connector on the back, or do I have to
use either of the MMJ ports?<br><br>My initial tests tell me the DB25 is
simply for a local printer, the terminal sessions want to be on one of
the MMJ ports, correct?<br><br>Can someone help me configure a 'no
soldering' solution to connect my VT420 to the on-board UART on the RPi 4
GPIO pins? I assume <a class="moz-txt-link-abbreviated" href="http://www.pacificcable.com">www.pacificcable.com</a> is the preferred vendor, and
what I need is a cable to go from MMJ on the terminal to a DB9 Female
connector, probably null modem, since I want to hook the terminal to the
TX/RX pins on the RPi 4 thru a level converter that takes TTL-level
signals to 'proper' RS-232 level.<br><br>My research shows the MMJ to
DB9 or DB/5 requires shorting a few pins together, and that's hard to do
with an MMJ->DB9 adapter shell - pacific cable shows what appear to
be pre-built adapters for $6 vs $3.50 for DIY adapter shells<br><br>Any
advice? Reccomendation?<br><br>I think I need an MMJ cable &
pre-built adapter shell.<br><br>Ken<br><br>Ken<br>_______________________________________________<br>rescue
list - <a class="moz-txt-link-freetext" href="http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org">http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org</a><br></div>
</div>
</blockquote>
<br>
</body></html>