SNAX/APN Application Programming Manual

Introduction to SNAX/APN High-Level APIs
SNAX/APN Application Programming Manual—420111-001
1-5
Configuration Requirements for CRT and ITI
for both the CRT and ITI protocols. The default is subtype 21: a screen size of 24 lines
with 80 characters in each line (24 by 80).
Besides the device type and subtype, the FILE_GETINFOBYNAME_ procedure call
also returns the record size specified by the SCF ADD LU command. For the ITI
protocol, the value returned is the value of the attribute RECSIZE minus one; the default
value is 79. For the CRT protocol, the value returned is the value of RECSIZE. For the
CRT protocol, the default value is 1920.
Configuration Requirements for CRT and ITI
This subsection is organized as follows:
•
Tandem PLU Acquire — A Tandem PLU application acquires an LU-LU session
with a terminal, printer, or workstation in an IBM network
•
Tandem PLU Accept — A Terminal or workstation in an IBM network requests an
LU-LU session with a Tandem PLU application
SNAX/APN can be configured either interactively, through the Subsystem Control
Facility (SCF), or programmatically through applications using the Subsystem
Programmatic Interface (SPI). This subsection briefly describes the configuration
requirements for using the high-level APIs. You can find detailed information about
SNAX/APN configuration in the
SNAX/XF and SNAX/APN Configuration and Management
Manual.
SNAX/APN high-level API configuration depends on:
•
which SNA entity initiates the LU-LU session
•
whether SNAX/APN is functioning as a LEN or End Node
Table 1-1. Device Types and Subtypes Returned by the
FILE_GETINFOBYNAME_ Procedure Call
Protocol
Device Type
(Bits 4 to 9)
Device Subtype
(Bits 10 to 15)
Screen Size
(rows by columns)
CRT 10 20 12 by 40
21 24 by 80 (default)
22 32 by 80
23 43 by 80
24 27 by 132
ITI 6 20 12 by 40
21 24 by 80 (default)
22 32 by 80
23 43 by 80
24 27 by 132