|A P P E N D I X A|
Testing with a Terminal Emulator
You can use the serial port(s) on the system that you are testing to connect to a second system which will act as a file server. This file server may or may not be the same type of system provided that:
The file server has a terminal emulator that is capable of correctly setting the file server's output baud rate to match that of the system that you are testing.
By connecting two systems in this way, you can use the terminal emulator on the file server as a terminal into the system that you are testing. (For UNIX systems, see the on-line tip manpage for detailed information about terminal connection to a remote host. For Windows systems, see the documentation for the Terminal accessory. For Macintosh® systems, see the documentation for MacTerminal®.)
|Note - In the following pages, system refers to the system that you are testing, and server refers to the file server system that you are connecting to the system being tested.|
1. Connect a serial port from the server to a serial port on your system with a 3-wire "null modem" cable (i.e. a cable that connects Pin 3 to Pin 2, Pin 2 to Pin 3, and Pin 7 to Pin 7). For the following examples, we will assume the use of Port A on the system and Port B on the server.
|Note - On Sun workstations, use a Shell Tool window, not a Command Tool window; some tip commands may not work properly in a Command Tool window.|
If you do not have a video monitor attached to your system, connect the system's TTYA to the server's TTYB and turn on the power to your system. Wait for a few seconds, and press Stop-A to interrupt the power-on sequence and start the User Interface. Type n to get to the ok prompt. Unless the system is completely inoperable, the User Interface is enabled, and you can continue with the next step in this procedure.
|Note - Do not type Stop-A from a Sun workstation being used as a server to your system. Doing so will abort the operating system on the server. (If you accidentally type Stop-A, you can recover by immediately typing either c at the > prompt or go at the ok prompt.)|
|Note - When entering ~ (tilde) commands in the tip window,
~ must be the first character entered on the line. To ensure that you are at the start of a new line, press Return first.
If the tip connection is in tandem mode, the operating system sometimes sends XON (^S) characters (particularly when programs in other windows are generating lots of output). The XON characters are detected by the Forth word key? , and can cause confusion. The solution is to turn off tandem mode with the ~s !tandem tip command.