Test Section 7; March Ones And Zeros Test - HP Series 37 Reference Manual

Test Descriptions
3.7 TEST SECTION 7
March Ones and Zeros Test
Step
71.
March Ones/Zeros -- This step marches first ones and then zeros through each 32K -byte block
of memory. Each 32K-byte block of memory is written to all zeros. Then each location is read
for a zero and then written to all ones. When the block contains all ones, the process is repeated
by reading each location for all ones and then writing a zero. The error latch is checked after
each 3 2K - byte block of memory is completed.
SEP 84
3-10
The following error messsage will be displayed only is error correction is NOT working:
Expected: XXXXXX;Received: YYYYYY
Address:
%ZZZZZZ
Bank
=
W
Board
=
A
Where: XXXXXX
=
data expected in octal
YYYYYY
=
data received in octal
ZZZZZZ
=
address of error in octal
0 <
=
Z
<
=
I 7777-
W
=
bank with error 0 <
=
W <
=
31
A=
0/1
The error latch information will be displayed if an error was detected during
the
test. Bad
memory chips are identified only by the error latch information.
Single-bit error detected
Board: X
Syndrome Code: %YYY
Chip Number: UZZZZ
Where: X '" 0/1
YYY
=
octal syndrome code
UZZZZ
=
Reference Designator of faulty RAM