31 Dec
2002
31 Dec
'02
1:56 a.m.
Jochen writes
Where do they hook up to? I see on ebay cables with db15 end and 3 bnc,
keyboard and mouse at the other end. I hook this into back of DEC 3000 where
it has tablet port? or do I need two separate cables, one for monitor from
3w3 connector and one from tablet port for keyboard and mouse?
I have plenty of monitors, but not quite sure what you are saying. Say I
have monitor with 13w3 connector on back, then I need 3w3 to 13w3 cable and
monitor is set? Where do keyboard and mouse come into picture? Special cable
plugging into tablet port (DB15) in back of DEC 3000?
Sorry for so many questions, but I do not know too much about these machines
(as if that is not obvious). Still I hope to soon have OpenVMS or Linux
running on them.
Bradley
Why? You need pairs of 8 MB or 32 MB FPM parity 72 pin
SIMMs.
Not that uncommon.
Thanks for the useful information about the memory. I have
already managed
to locate 1 pair of SIMMs on Ebay. I will continue until maxed out.
> Now I look at the back of the machine and my main
> question is what cable do I need to hook up my VT220, or my VT420,
Jochen
replies
Any regular "null-modem" cable should do the
job.
I see how to hook up vt220 with db25 f-f null modem cable, but how does that
get vt420 hooked up? It appears to have some kind of RJ connecton in back,
not DB style. Is there a special cable for that?
or what
model monitor with keyboard and mouse is this thing supposed to work with?
You
need a LK201 or LK401 keyboard and a VSxxx mouse. The same keyboard
(and mouse) as used on the VT[234]xx terminals and the VAXstations.
In a typical
DEC fashion, in the manual they do not mention model numbers of
monitor to go with it,
The video timings for the on board Smart Frame Buffer are:
1024 x 786 @ 72 Hz for the 300L
1280 x 1024 @ 72 Hz for the 300, 300X, 300LX
Any sync on green capable multisync monitor can be used. You just need
a 3W3 video cable. 
31 Dec
31 Dec
2:37 a.m.
On Tue, 31 Dec 2002, Bradley Slavik wrote:
Where do they hook up to? I see on ebay cables with db15 end and 3 bnc,
keyboard and mouse at the other end. I hook this into back of DEC 3000 where
it has tablet port? or do I need two separate cables, one for monitor from
3w3 connector and one from tablet port for keyboard and mouse?
The cable for the DEC 3000 series has JUST a keyboard/mouse on one end and
DA15 on the other side. Now, be careful, DEC used a DA15 for the console
on most of its machines, but seemed to use a difference cable, and pinout,
for each machine class.
I have plenty of monitors, but not quite sure what you are saying. Say I
have monitor with 13w3 connector on back, then I need 3w3 to 13w3 cable and
monitor is set? Where do keyboard and mouse come into picture? Special cable
plugging into tablet port (DB15) in back of DEC 3000?
If you want a 3w3 -> 13w3 cable (which I havent seen but you could
probably make yourself), make sure the monitor can do sync-on-green. Your
best bet is to find an IBM Powerdisplay (multisync) or authentic DEC
monitor that has 3 BNC's on it, and a standard 3w3 -> BNCs cable.
BTW, the DA15 "Tablet" port isn't a 'tablet port'. That's
supposed to be
a picture of a keyboard ;).
I see how to hook up vt220 with db25 f-f null modem
cable, but how does that
get vt420 hooked up? It appears to have some kind of RJ connecton in back,
not DB style. Is there a special cable for that?
It's called an MMJ "Modified Modular Jack" from what I've heard. From
memory, the pinout is approximately:
1 Handshaking
2 Data1 +
3 Data1 -
4 Data2 -
5 Data2 +
6 Handshaking
I think that 1/6 are CTS and DTR, or something like that, but for DEC
gear, hardware handshaking lines shouldn't be needed. Data1/Data2 are
Tx/Rx, I'm not sure which is which, but you can use a null modem cable to
figure that out. If you wanna make a DB25 to MMJ cable:
DB25 MMJ
2 ------------- 2
3 ------------- 5
7 --+---------- 3
\---------- 4
Notice that on the MMJ, pins 3 and 4 are connected together to ground, and
that the 'important' pins are the middle 4 - it's easy to cut a 4wire
modular phone cable in a pinch, trip off the clip on the modular end (like
below) and wire it to a DB25 connector / patch box. Just remember that the
connector won't lock in now, so use something else to hold it in.
_
/ /
_/_/_ _____
| | ==> | |
||||| |||||
or what
model monitor with keyboard and mouse is this thing supposed to work with?
You
need a LK201 or LK401 keyboard and a VSxxx mouse. The same keyboard
(and mouse) as used on the VT[234]xx terminals and the VAXstations.
In a typical DEC fashion, in the manual they do not
mention model numbers of
monitor to go with it,
The video timings for the on board Smart Frame Buffer are:
1024 x 786 @ 72 Hz for the 300L
1280 x 1024 @ 72 Hz for the 300, 300X, 300LX
Any sync on green capable multisync monitor can be used. You just need
a 3W3 video cable. Sorry for so many questions, but I do not know too
much about these machines
(as if that is not obvious). Still I hope to soon have OpenVMS or Linux
running on them.
One last note - even though I'm a Linux fan, I seem to remember that
NetBSD is a better OS to use than Linux (of course OpenVMS is also great,
if you can get software for it to do what you want, or wanna spend $$$ or
time doing it). I've got OpenVMS and NetBSD installed on my DEC 3000/600
- on separate drives.
Pat
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu
4:14 a.m.
On Tue, Dec 31, 2002 at 06:59:00AM -0600, Bradley Slavik wrote:
Your VT420 has only MMJ ports? See
the other post or google for MMJ and
pinout or http://www.bsdfans.org/ (?) to get the pinout. You can use
any 6 pin RJ cable for the MMJ port if you cut off the tab.
Hmm. Can't remember exactely. The 300 does not have direct
connectors
for keyboard and mouse? There is a DB15 for keyboard and mouse? Then
you need a DB15 to 7 pin miniDIN (mouse) and 4 pin RJ (keyboard)
breake out cable. AFAIK it is the same as on DECstations, but _not_
as on VAXstations.
Any regular
"null-modem" cable should do the job.
I see how to hook up vt220 with
db25 f-f null modem cable, but how does that
get vt420 hooked up? It appears to have some kind of RJ connecton in back,
not DB style. Is there a special cable for that? You need a
LK201 or LK401 keyboard and a VSxxx mouse. The same keyboard
(and mouse) as used on the VT[234]xx terminals and the VAXstations.
Where do they
hook up to? I see on ebay cables with db15 end and 3 bnc,
keyboard and mouse at the other end.
This cable is for early VAXstations, it will
not work.
You need a separate video cable.
I have plenty of monitors, but not quite sure what you
are saying. Say I
have monitor with 13w3 connector on back, then I need 3w3 to 13w3 cable and
monitor is set?
You need a 3W3 video cable, preferable to 3 x BNC. Then you can
use
a 3 x BNC to 13W3 cable and BNC-BNC adapters (if you can't get this
adapters BNC T plugs from your 10BaseT cabling will do too) to connect
the two cables together, resulting in a 3W3 - 13W3 cable.
If the monitor works with the DEC, just try. Most newer 19"/20" tubes
should do.
Where do keyboard and mouse come into picture? Special
cable
plugging into tablet port (DB15) in back of DEC 3000?
Yes, see above. (The
"tablet" is a keyboard. ;-) )
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
4:19 a.m.
Rumor has it that Bradley Slavik may have mentioned these words:
Thanks for the useful information about the memory. I
have already managed
to locate 1 pair of SIMMs on Ebay. I will continue until maxed out.
I have no affiliation other than I'm a satisfied customer:
http://www.18004memory.com/category.asp?catid=2&subcatid=202
Quite possibly better prices than what you'll find on Ebay...
Where do they hook up to? I see on ebay cables with
db15 end and 3 bnc,
keyboard and mouse at the other end. I hook this into back of DEC 3000 where
it has tablet port? or do I need two separate cables, one for monitor from
3w3 connector and one from tablet port for keyboard and mouse?
You'll need a 3w3 -> 3 BNC cable (for a 3/4/5 BNC connector monitor) and
you'll need a special thingamawidget to hook a keyboard & mouse up -- I'm
at work, DEC3000/300 at home, so I can't take a look at it just yet...
I have plenty of monitors, but not quite sure what you
are saying. Say I
have monitor with 13w3 connector on back, then I need 3w3 to 13w3 cable and
monitor is set? Where do keyboard and mouse come into picture? Special cable
plugging into tablet port (DB15) in back of DEC 3000?
Yea, that sounds right.
Sorry for so many questions, but I do not know too much
about these
machines (as if that is not obvious). Still I hope to soon have OpenVMS or
Linux running on them.
Hmmm... Linux? Keep hoping. AFAIK, linux doesn't support TurboChannel (or
at least not much of it), so it'll be a struggle. NetBSD _last I checked_
ran fine on it, but didn't support any framebuffers, so you would need a
terminal hooked up to it (which would negate your need to get the
keyboard/mouse/monitor running... ;-) - but you'd wanna check netbsd.org
for sure... maybe it's supported now.
I ran Tru64 Unix on mine, it ran fair, but a little slow on 128Meg RAM --
debating when I can put in a little money into my little beastie... but I
plan on running VMS on it when I do.
Anywho, HTH & Happy New Year!
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger -- sysadmin, Iceberg Computers
zmerch(a)30below.com
What do you do when Life gives you lemons,
and you don't *like* lemonade?????????????
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fire＠dls.net -
jkunz＠maja.unixag-kl.fh-kl.de -
pat＠purdueriots.com -
zmerch＠30below.com