Category : Alternate Operating Systems - Quarterdeck DesqView, CP/M, etc
Archive   : QOSTNOTE.ZIP
Filename : AS400Q.TEC

Using IBM AS/400 with QEMM-386
by Dan Sallitt

The IBM AS/400 is a complicated terminal emulation setup, akin to
the 5250. It usually requires 3 files in config.sys (EIMPCS.SYS
(1K), ECYDDX.SYS (block device - 21K) and FSDD.SYS (needs ECYDDX
before it - 59K)) and 2 from the command line (a hardware manager
- either E5250AH.COM (8.2K) or WSEAH.COM, usually - and
STARTRTR.COM, which is 56K) to get it going, followed by a number
of other files to implement various functions.

One of the cards that AS/400 software can use, the 5250 card (and
maybe others as well), puts a piece of RAM, 8K or so in size, at
xC00 (usually CC00). QEMM 5.00 may not see this RAM, and may
require that you explicitly exclude it with a parameter on the
QEMM line in your CONFIG.SYS file. In addition to excluding this
area, make sure the RAM parameter is on QEMM; otherwise,
E5250AH.COM accesses vast portions of the reserved memory area
when it loads, and all of these areas may need to be excluded to
prevent crashes when some program accesses them.

Giving E5250AH.COM the parameter /Mx (where x is the same as
above - C by default) makes it access fewer areas, though the
areas that are accessed still need excluding if you don't use the
RAM parameter.

Usually, after the STARTRTR is run, users run a program FSPC.COM
to make a virtual disk on the mainframe. This program isn't
resident and takes no memory.

STARTRTR will need 160K of space to load high, even though it
settles down to 56K or so.

We're hearing in March 1990 of new versions of the IBM AS/400
software that have fewer and smaller files. Apparently the
driver FSSD.SYS and the non-resident FSPC.COM are united in a
smaller TSR STARTFLR.COM.