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In the addr lines test, first a
FFFFFFFFC16)
pattern is
written to the entire memory area to be checked.
It is then
read oack one byte at a time beginning from the lower ad-
dresses and checked to see if
FF(l6)
was read correctly.
If
correct, 00(16) is written to that address.
This allows any
oad address lines to oe found.
Tne dynamic bus sizing test checks whether the dynamic
ous sizing function operates properly.
It confirms whether
the DSACKO, DSACKl, SIZO, and SIZl signals work properly.
The burst mode operation test check to see wnether the
CPU can read data correctly from the internal cache in the
burst mode.
diag>
memory -v
MAIN MEMORY CHECK:
diag>
Memory
size • . • • . • . . . • • . . . • . • • • . . • . . . . . . . . . 4-MByte
Data
lines
.•••..•••.••••.•••••..•••...••. OK
Byte
access • • • . . • • • • • • • • • • • • • • . • . • . . . • • . . • OK
Word
access • • • • • • • • • . • • • • • • • • • . • • • • • . • • • • • OK
Long
access • • • • • • . . • • • • • • • • • • • • • . • . • • • . . • • OK
Addr
lines
••••••••••••••••••••••••••••••• OK
Dynamic bus sizing •••.••••..••.•..•.••.•••. OK
Burst mode operation • • • • • . • . • . • • • • • . • • • • . • • OK
4 - 3 - 2.
EP-ROM Command
Tnis test calculates tne checksum for the EP-ROM and
c11ecks whether it is correct.
Tins determines whether the
contents of tne EP-ROM are intact or not and confirms that
tnere are no proolems with the control signals or with the
data anci ac..ldress
buses f rora
tI1e CPU to the
EP-ROM.
diag>
eprom -v
EP-ROK CHECK • • • . • • • • • • • . • • . • . • • • • • • . • • • • . . . . • • • . . • • OK
diag>
NWS-1510/1530/1580
4-7
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