Chapter 3 Test Program for Field
Satellite T130, Satellite Pro T130, and PORTEGE T130 Maintenance Manual (960-Q08)
3.11 Cache Memory Test
To execute the Cache Memory Test select 08 from the Diagnostic Test Menu, press Enter
and follow the directions on the screen. The Cache Memory Test contains eight subtests that
test the computer's cache memory. Move the highlight bar to the subtest you want to execute
and press Enter.
NOTE: If NO is selected for Test Loop on the Test Parameter menu, the screen will
remain blank while the subtest is executing. When the test is complete the Cache Memory
Test menu displays.
If YES is selected for Test Loop on the Test Parameter menu, the Test Status screen
displays while the subtest is executing. Press Ctrl + break to return to the Cache Memory
Test menu.
Subtest 01 Constant Data Test
This subtest reads the contents of cache memory and saves it into RAM. The
subtest then writes constant data (FFFFH, AAAAH, 5555H, 0101H, and
0000H), reads the new data and compares the result with the original data
pattern. The original cache memory content is then restored to the cache
memory.
Subtest 02 Address Pattern Test
This subtest reads the contents of cache memory and saves it into RAM. The
subtest then writes address data patterns (0000H, 0001H, 0002H, through
3FFDH, 3FFEH, 3FFFH), reads the new data and compares the result with the
original data. The original cache memory content is then restored to the cache
memory.
Subtest 03 Increment/Decrement Test
This subtest reads the contents of cache memory and saves it into RAM. The
subtest then writes the increment data (00H, 01H, and 02H, through FDH,
FEH, and FFH), reads the new data and compares the result with the original
data. After comparing the incremental data, decrement data (FFH, FEH, and
FEH, through 02H, 01H, and 00H) is written and the new data is read and
compared with the original data. The original cache memory content is then
restored to the cache memory.