Toshiba 960-498 Manuale Utente

To execute the Memory Test, select 

 from the DIAGNOSTIC TEST MENU, press 

 

and follow the directions on the screen. Move the highlight bar to the subtest you want to 
execute and press 

. 

Subtest 01 

Conventional memory 

This subtest writes a constant data to conventional memory (0 to 640 KB), 
then reads the new data and compares the result with the original data.  

Subtest 02 

Protected Mode  

This subtest writes constant data and address data (from 1MB to maximum 
MB), and reads the new data and compares the result with the original data.  

Subtest 03 

Protected Mode (Cache off) 

 

This subtest executes the same test as the subtest 02 with the cache off. 

Subtest 04 

Cache Memory (on/off) 

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 05 

Stress 

Data (from 1MB to the maximum MB) is written from the 16KB write buffer 
to the 16KB read buffer and compared the data in the buffers. The read buffer 
starts from 0001 and the comparison is continued with the following read 
buffer addresses: 0001, 0003, 0005, 0007, 0009, 000b, 000d and 000f.