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Understanding Serial Wiring

I have seen intelligent adult human beings brought to the very edge of insanity by the (anticipated) simple connection of a terminal or a printer to a Unix system. I have seen the aftermath of such installations: solder-burned fingers, floors littered with clipped off RJ-11 phone connectors, and wires ending in amazing combinations of store-bought null modems, gender changers and straight-thru cable connectors.



Title Last Comment
Our cash drawer connected to a serially connected Wyse terminal stopped working  
- Our cash drawer connected to a serially connected Wyse terminal stopped working. I made some changes in the device configurator and wondering if there's a way to restore those. -

tput and stty  
- tput and stty are related in the sense that they both have to do with how a Unix terminal behaves. Tput is perhaps less important than it used to be, but still useful -

Pass-Through Printing  
- The idea is that if the terminal sees a special key sequence, it will start sending the data out some other port (parallel or serial) until it sees some sequence that tells it to stop. -

Local printing in Synchronics   2012/03/07 anonymous
- I know exactly what he has - an old SCO Unix system with a Digiboard multiport serial board, green screen Wyse terminals and Okidata printers with serial cards. I can handle all of that. -

Digiboard Port Server changes tty device permissions  
- Earlier this week, one of those customers called with a problem of changing perms on his /dev/tty* devices. He needs them set with write permission (666), but some were seemingly randomly resetting to 600. -

Terminal Server Install  
- In which a wannabe tech whiz messes up my day tet again. iOr maybe it was the hardware - who knows? -

Office on Terminal Server   2013/03/15 anonymous
- Installing Microsoft Office on terminal server - licensing issues -

It's unplugged, isn't it?  
- A long trip to plug in a terminal: I miss the old green screen terminals. Oh, they weren't always green: some were white screens, and some were a really ugly orange, but they all had the virtue of simplicity. -

Rare Xenix spotted in the wild   2013/07/16 anonymous
- Ancient Xenix boxes: I'm sure there are no breeding pairs left, but every now and then I hear of a Xenix machine still wheezing away in some small company. -

Information about telnet sessions  
- Is there a way to identify which telnet session corresponds to which ptty? I would like to know the remote ip address and the ptty of each telnet session -

Terminal server, Remote Desktop, thin clients and all that  
- No wonder people get confused. Lots of similar or related things, no end of licensing confusion, no end of general confusion. -

Notes on Digiboard Terminal Servers TS/8 TS/16  
- Replacing serial boxes using Frame Relay with Digiboard Port Servers over a VPN. -

Assigning terminals in BBX config.bbx  
- Because pseudo tty numbers are assigned on a first-come first-served basis it can be difficult to assign the users the same 'terminal number' each time they log in . Here is a nifty way to tame those pesky tty numbers and get them to settle down. -

Finally solved FACTS crashing issue  
- BBX Facts config.bbx is a weak point. Terminal definitions are required for every pseudo tty that might be used - there is no default. -

Digiboard Serial Ports on Linux Servers  
- This customer has an 56K DDS line under contract for a few more years so we went with a Digi C/X controller to match what was in their SCO server. -

Your opinion wanted   2011/06/24 BigDumbDinosaur
- Web based telnet/ssh: is that preferable to command line?1 -

Device::SerialPort on Redhat 8  
- Since each building has a T1 router, I wrote a small program to log the routers messages to a text file. While performing these upgrades, I ran into some small trouble with my code, which relies on the perl module: "Device::SerialPort". -

Kermit 95 2.1.3   2011/03/31 TonyLawrence
- This is a review of an ancient terminal emulation product and is only left here for historical purposes. -

How to run screen automatically?  
- So how can you use 'screen' automatically? I've yet to figure that out but there must be a way? -

 
 











 
 
Log Serial Port Data to a Specified Logfile   2013/03/29 TonyLawrence
- I wrote this script to capture log data from our T1 routers for debugging purposes. -

RS232 Wiring Diagrams  
- Color coded diagram for understanding RS232 EIA-232 Wiring pinouts printers, terminals and modems. DB9 and DB25. -

Installing an Equinox SST-64 under Linux  
- After 15-20+ hours work I got my Equinox sst-64 pci card working. I'm sending info on what I did in case it is useful to others. -

Monitor users with Peek  
- There aren't many character based apps left, but if you still have one, you might like Peek -

Digiboard Port Server  
- Digiboard PortServers are excellent ways to convert older serial devices to TCP/IP. -

AlphaCom3 Terminal Emulator  
- This is a review of an older version - the latest cuts are even better and this was darn good! -

Understanding Termcap and Terminfo  
- Most Unix applications are written so that they can be run on different terminals. The "terminal" may be simply an emulator like Procomm or Tinyterm or IceTen running on a Windows machine, but the running program doesn't know that -

Winterm 5000 Terminal  
- This is a review of an ancient Wyse Winterm product and is only left here for historical purposes. -

Understanding Dumb Terminals  
- This is an old article about RS232 dumb terminals and is only left here for historical purposes. -

Qume Serial X-Terminal  
- The QX15 provides a standard serial terminal that also has the ability to run (monochrome) X-Windows. -

(SCO Unix)What can I do about function keys not working?  
- This is an old article about function keys on SCO Unix and is only left here for historical purposes. -

(SCO Unix)I have one application that doesn't work with scoansi; how can I fix that?  
- (SCO Unix) I have one application that doesn't work with 'scoansi'; how can I fix that? scooansi-new and 'mkdev sconsi', filepro termcap 5.0.6 and 5.0.7 -

Set and retain ownership and permissions on tty files  
- You'll need to disable the tty(s) from login before using chmod or chown. You also may want to modify /etc/conf/node.d/cn (SCO Unix). -

Program reacts slowly to ESCAPE key -->Re Please help with Response Time and Screen Views  
- ESCAPE key not functioning or functioning very slowly.0 -

Understanding Serial Wiring  
- I have seen intelligent adult human beings brought to the very edge of insanity by the (anticipated) simple connection of a terminal or a serial printer to a Unix system. -

 
 
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