ZiLOG System 8000 Hardware Reference Manual

03-0244-01
NOTE TO USER FOR SADIE VER. 3.2
April 20, 1983
Purpose:
This note describes some major changes between SADIE
3.1 and SADIE 3.2. It also fills in some gaps between
the release date of SADIE 3.2 and the release of the
latest SADIE documentation in the System 8000 Hardware
Reference Manuals~for Models 11 and 21/31 •. ,
Item 1:
NEWHEMl, NEWMEM2 and NEWMEM3 memory diagnostics have
been replaced by a new diagnostic, MEMTEST. MEMTEST
supports all memory array boards currently available
for the System 8000. The version of MEMTEST in SAOIE
3.2 does not, however, test the Iep 8/02s1ave memory.
The boards supported are:
PARITY -- 256K and 512K
Eee -- 256K and 1 Megabyte
f.1EMTEST is ~ctually a s:eries of tests. Included are a
segment unlqueness te:st, an addr~ss bus test, a data
bus test, several boarOl trace and pin continuity tests
and a' ram 'test. If these tests go smoothly, parity ram
or checkbyte ram~~e also tested. All tests are done
with mmuls disabred. ~
f-1EMTEST is' a subse'ant.ial improvement over previous
memory .. ,te!?ts.. It -is: muc~.better at narrowing m~mory
problems:: ~tb .~ single cPtiP. or,:)L; a small reg~j;'On~ ,of' the
memoryatray board. "~llqm,,~r~ors are uIl~ikelY"·l".o escape
from,MEbl11EST as they ~Q~uld in earlie,rtests •. ' But the
primary ~!~,mprovemen~.,~,'.: of l-IEMTEST',. ~ is , . .in its. error
displays, itwhich .". Clre:"'.y.isual,· represeritations'.,of the
memot·Y: array ~1q~rd \'l,r~h. ba;d .chip·(po'slitiori~f· clearly
marked.~;: '. ....... . '.,i •. ,l.
~ : I' .1
, ..
MEIIiITES-[tidoes have it.s limitations. Its primary goal
was to bea fast bq,t~ thoro~gp rjllll. test, with secondary
emphas,is',':placed" 'on o.'tJ1E!r memory ,ar'ray board functions.
vlhile!,:~ t 'is ·veryg'o,O.dI at finding bad ram chips, it is
not as~'.·,gooa at naJ:'rowlng down other types of errors.
This is~··particularly true when it is used with ECC
memory· array bd~rqs.

ZiLOG System 8000 Specifications

General

Brand	ZiLOG
Model	System 8000
Category	Desktop
Language	English