x3270 is an IBM 3270 terminal emulator for the X Window System and Windows.
tn5250 is a telnet client for the IBM iSeries and AS/400 that emulates 5250 terminals and printers. This function is the same as that provided by the 5250 emulator in IBM iSeries Access.
tn5250j is a 5250 terminal emulator for the AS/400 written in Java.

Midrange.com provides a large number of resources for users and developers of IBM's System i5 / iSeries / AS400 computers.

PUB400 public access IBM i 7.5 server.

IBM System i and IBM i Information Center

IBM i documentation
IBM i V5R4 documentation

HAR2009: The IBM AS/400 - A technical introduction see YouTube - HAR 2009: The IBM AS/400 1/5 for the first of 5 film clips of this presentation.

This table lists the AS/400 Version 3, Release 7 books that are available in Portable Document Format (PDF).

This table lists the AS/400 Version 4, Release 1 books that are available in Portable Document Format (PDF).
This table lists the AS/400 Version 4, Release 2 books that are available in Portable Document Format (PDF).
This table lists the AS/400 Version 4, Release 3 books that are available in Portable Document Format (PDF).
This table lists the AS/400 Version 4, Release 4 books that are available in Portable Document Format (PDF).
This table lists the AS/400 Version 4, Release 5 books that are available in Portable Document Format (PDF).
Zie ook:http://publib.boulder.ibm.com/pubs/pdfs/as400/

IBM - System i V5R2, V5R3, V5R4, and V6R1 PDF documents.

APAR#: II12227 servers and ports required by iSeries Access for Windows

Information on Printers from HP Document Number: 21800146. Alternative link: Information on Printers from HP

MC PRESS online - Secrets of IPLs Exposed
Midrange News - How to Enter DST via Manual IPL from Power Off
iSeries Portal - Recovery from SRC B90034B0 during Manual IPL
AS/400, eServer iSeries, i5/OS, System i, IBM Power Systems - System Codes During IPL

By Mainframes & More with Matthew on YouTube:

• [001] IBM i (AS/400): Databases all the way down... on 2019-12-22.
• [002] IBM i (AS/400): F4 prompting is your best friend on 2019-12-23.
• [003] IBM i (AS/400): Create database table with DDS on 2019-12-27.
• [004] IBM i (AS/400): Import CSV file into physical file on 2020-01-02.

Brian Garland's Blog

fourSquares - Free Stuff
AS/400 freeware o.a. Yahtzee!, Snake, Pacman en Tetris.
AS/400 Freeware Page - Bryan Dietz
AS/400 Tools van Thomas Raddatz

MochaSoft freeware among other things tn5250 emulators for Windows 3.1, MacOS 8/9, and some mobile phones.

OSSILE/OSSILE A wide set of utilities for IBM i.
GitHub - BrianGarland for several IBM i games (Advanture4i, Maze, Minesweeper4i), and other things.

When a 5250 client is locked because of too many failed logins:

• Log on as QSECOFR to a physical terminal or another 5250 client.
• WRKCFGSTS CFGTYPE(*DEV)
• Scroll to the workstation that is locked.
• Use “1” to set the workstation online.