Asynchronous Terminals and Printer Processes Programming Manual

SECTION 1
INTRODUCTION
In the Tandem environment, three I/O processes control
asynchronous, point-to-point communication: ATP6100,
TERMPROCESS, and SERIALPRINTPROCESS.
ATP6100 provides a software interface between the GUARDIAN 90
file system and up to 32 asynchronous terminals or serial
printers that are connected to a NonStop system or a NonStop CLX |
system by way of the 6100 Communications Subsystem (CSS). You |
can configure ATP6100 for 6105, 3605 (CLX), 6106, or 3606 (CLX) |
controllers using the ASYNCTERMPROC macro. ATP6100 resides in |
the Tandem host. It is not however, a complete access method; it
requires the support of software that is downloaded into the 6100
CSS. There are two downloaded protocol modules: CSSASYNC, which
supports terminals, and CSSPRINT, which supports printers.
You can also configure ATP6100 for 3681 Multifunction Controller |
support using the ASYNCPROC macro. In this environment, you can |
connect up to two asynchronous terminals or serial printers to |
a NonStop CLX system by way of a 3681 Multifunction Controller. |
The 3681 MFC requires the support of protocol software. However, |
the protocol software modules, CSSASYNC and CSSPRINT, are not |
downloaded to the 3681 MFC in the same way as they are downloaded |
to the CLIP for the other controllers. Instead, the modules are |
downloaded during the cold-load process. As a result, you should |
not configure a PATHS paragraph or a Communications Subsystem |
Manager (CSM) process for an ATP6100 process that supports the |
3681. Refer to the NonStop CLX System Management Manual for |
details. |
TERMPROCESS provides a software interface between the GUARDIAN
90 file system and up to 32 asynchronous terminals that are
connected to a NonStop system by way of T6303/4 Asynchronous
Controllers. SERIALPRINTPROCESS does the same task for serial
printers. TERMPROCESS and SERIALPRINTPROCESS are complete access
methods.
November 1987 1-1