Tests and Diagnostics
3-24 [CONFIDENTIAL])
PORTEGE R830 Satellite R830 Series Maintenance Manual (960-880)
To test the cache memory, a pass-through write-read comparison of ‘5Ah’
data is run repeatedly to the test area (‘7000’: ‘Program’ size to ‘7000’:
‘7FFF’ (32 KB)) to check the hit-miss ratio (on/off status) for CPU cache
memory. One test takes 3 seconds.
Number of misses
Number of hits
OK
Number of misses
Number of hits
Fail
Subtest 04
Stress
Write/Read buffer (1 size = B30h) is prepared in the conventional memory.
The data is made in the Write Buffer, the data in Write Buffer is written in the
area of address of 1MB or after. The data is red in the Read Buffer and data is
compared in area up to the maximum size.
Data: FFh, FFh, FFh, FFh, FFh, 00h, 00h, 00h, 00h,
FFh, FFh, FFh, 00h, FFh, 00h, 00h, FFh, 00h,
00h, FFh, FFh, FFh, FFh, 00h, 00h, 00h, AAh
