Toshiba T4500 User Manual page 63

The constant data is FFh, AAh, 55h, and 00h.
Subtest 05 Memory Module
NOTE: To execute this subtest, an optional memory card must be installed in the computer.
This subtest functions the same as Subtest 04, except it is used for testing an op-
tional memory card. Memory module capacity is 2 , 4, 8, and 16 MB. After select-
ing Subtest 05, the following message will appear:
Extended memory size (1:2 MB,2:4 MB,3:8 MB,4:16 MB) ?
Select the number that corresponds to the memory card installed in the computer.
Subtest 06 T4500/T4500C Backup Memory
This subtest writes constant data to memory from address C8000h to CFFFFh, then
reads new data and compares the result with the original data. The constant data is
0000h, 5555h, AAAAh, and FFFFh.
T4600/T4600C: (No test item)
Subtest 07 Hard-RAM
This subtest writes a word unit of constant data to memory (address E0000h to
E7FFFh), then reads the new data and compares the result with the original data.
The constant data is 0000h, 5555h, AAAAh, and FFFFh. Also, this subtest executes
the paging test for page data.
Subtest 08 Cache Memory
To test the cache memory, a pass-through write-read comparison of '5A' data is run
repeatedly to test area ('7000':'Program' size to '7000':=7FFF' (32 KB)) to check the
hit-miss ratio (on/off status). One test takes three seconds.
Subtest 09 T4500/T4500C PCMCIA Memory (1 MB SPRAM)
NOTE: To execute this test, a PCMCIA memory card must be installed in the computer.
This subtest divides the PCMCIA window (D0000h to DFFFFh) into 64 KB incre-
ments. It then executes the subtest by writing constant data to the PCMCIA
memory, reads the data, then compares it with the original data.
3-10
Number of miss hit < Number of hit
Number of miss hit ¯ Number of hit
OK
Fail