81 lines
2.8 KiB
Plaintext
81 lines
2.8 KiB
Plaintext
AST RESEARCH TECHNICAL BULLETIN TB-0262 02/12/87
|
|
|
|
|
|
|
|
DECISION DATA MODEL #5751-01 CLUSTER
|
|
WITH 5250 MODEL 11
|
|
|
|
|
|
|
|
The model #5751-01 from Decision Data claims to emulate an
|
|
IBM model 5294 cluster controller. However with information
|
|
obtained from their technical support group, this is not the
|
|
case. Instead, the Decision Data model #5751-01 should be
|
|
treated as an IBM model 12 remote controller. Incidentally,
|
|
the Decision Data model #5751-01 will not support IBM's
|
|
Displaywrite/3x, which is also true with IBM's model 12
|
|
remote controller.
|
|
|
|
This technical bulletin concerns itself with the way the
|
|
Decision Data model #5751-01 handles workstation addressing
|
|
on an IBM System/3x. This unit either has 4 or 8 ports
|
|
depending upon which option was taken. It is important to
|
|
note that port #1 should always be used. The following
|
|
addressing scheme should be used if the Decision Data model
|
|
#5751-01 cluster controller is chosen over the IBM model
|
|
5294 cluster controller:
|
|
|
|
Unit Address of Decision Data IBM
|
|
5250 Model 11 Terminals Model #5751-01 System
|
|
and or Emulators Cluster Controller 3X
|
|
|
|
04 ------------> 00 Note #1
|
|
00 ------------> 02 Note #2
|
|
|
|
**NOTE**
|
|
|
|
#1 If the AST5251/11 emulator and or terminal is the very
|
|
first physical device from the Decision Data model
|
|
#5751-01 cluster controller, unit address number 04
|
|
must be used. Please note that a physical device
|
|
was specified. Multiple session support with the
|
|
AST5251/11 Plus, however, will not be supported.
|
|
|
|
#2 The very last physical device or the terminator on the
|
|
line must have a unit address of 00.
|
|
|
|
The following example will illustrate this addressing scheme
|
|
more clearly:
|
|
|
|
Unit Address of Decision Data IBM
|
|
5250 Model 11 Terminals Model #5751-01 System
|
|
and or Emulators Cluster Controller 3X
|
|
|
|
04
|
|
(first physical device ------------> 00
|
|
on the line)
|
|
|
|
00
|
|
(last physical device ------------> 02
|
|
or terminator on the line)
|
|
|
|
01
|
|
(cabled through ------------> 03
|
|
physical device)
|
|
|
|
02
|
|
(cabled through ------------> 04
|
|
physical device)
|
|
|
|
03
|
|
(cabled through ------------> 05
|
|
physical device)
|
|
|
|
05
|
|
(cabled through ------------> 06
|
|
physical device)
|
|
|
|
06
|
|
(cabled through ------------> 07
|
|
physical device)
|
|
|