Would you like to make this site your homepage? It's fast and easy...
Yes, Please make this my home page!
================================================================================
Note 25.0 FPJ11,KDJ11-A compatibility No replies
FURILO::JACKSON 85 lines 19-AUG-1985 11:35
--------------------------------------------------------------------------------
+---------------+ +-----------------+
| d i g i t a l | | uNOTE # 025 |
+---------------+ +-----------------+
+----------------------------------------------------+-----------------+
| Title: FPJ11-AA Compatibility with the | Date: 28-APR-85 |
| LSI-11/73 (KDJ11-A) | |
+----------------------------------------------------+-----------------+
| Originator: Mike Collins | Page 1 of 2 |
+----------------------------------------------------+-----------------+
Early LSI-11/73 (KDJ11-A) modules are incompatible with the FPJ11-AA
floating point accelerator. This MicroNote describes how to identify
those modules which are compatible and those which are not compatible
with the FPJ11-AA.
The following information refers to two identifying numbers. They are
the module variation and the module revision.
The module variation number is stamped onto the end of the plastic
handles. It will be 'M8192', 'M8192-YB' or 'M8192-YC'.
The module revision number can be found on side two of the module
(noncomponent side) stamped into the plastic handle, or written with
indelible ink. This number is updated as the board is ECO'd. The
designation is a number followed by the module revision. e.g. 441 C1,
indicates module revision C1.
The first LSI-11/73 module is called a KDJ11-AA and is incompatible with
the FPJ11-AA. The module variation for the KDJ11-AA is M8192, and the
module revision number is C1. The KDJ11-AA can be upgraded to be
FPJ11-AA compatible. Contact the local DEC office for more information
concerning the upgrade procedure.
Two new options have been created. The KDJ11-AB is a module which is
fully compatible with the FPJ11-AA. The module variation for the
KDJ11-AB is M8192-YB, and the module revision number is A1 or A2.
The third option is called a KDJ11-AC and is used for fully compatible
modules which have FPJ11-AAs installed onto the board by Digital. It
has a module variation of M8192-YC and the module revision number is A1
or A2. Therefore a KDJ11-AB becomes a KDJ11-AC by simply installing an
FPJ11-AA.
Page 2
The following table summarizes the above information and should be used
as a 'quick check' for FPJ11-AA compatibility.
+----------+------------+------------+--------------------------+
| OPTION | MODULE | MODULE | FPJ11 COMPATIBLE? |
| | VARIATION | REVISION | |
+----------+------------+------------+--------------------------+
| KDJ11-AA | M8192 | C1 | NO (But Upgradeable) |
+----------+------------+------------+--------------------------+
| KDJ11-AB | M8192-YB | A1 or A2 | YES |
+----------+------------+------------+--------------------------+
| KDJ11-AC | M8192-YC | A1 or A2 | YES (FPJ11-AA Installed) |
+----------+------------+------------+--------------------------+
CAUTION
An FPJ11-AA installed on a KDJ11-AA may APPEAR to work
but cache errors and parity errors may occur.
An MXV11-BF must be REV C to be compatible with a
KDJ11-A with an FPJ11-AA (KDJ11-AC). Earlier versions
of the MXV11-BF are incompatible with KDJ11-ACs.
KDJ11-As without FPJ11-AAs are compatible with all
versions of the MXV11-BF.
The MCV11-D is incompatible with KDJ11-ACs. KDJ11-As
without FPJ11-AAs are compatible with all versions of
the MCV11-D.
