Memory Test - Toshiba Satellite 1400 Series Maintenance Manual

3 Tests and Diagnostics
3.5

Memory Test

To execute the Memory Test, select 2 from the DIAGNOSTIC TEST MENU, press Enter
and follow the directions on the screen. Move the highlight bar to the subtest you want to
execute and press Enter.
Subtest 01 Conventional memory
This subtest writes 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
NOTE: The CONFIG.SYS file must be configured without expanded
memory manager programs such as EMM386.EXE, EMM386.SYS or
QEMM386.SYS. Also, the HIMEM.SYS must be deleted from the
CONFIG.SYS file.
This subtest writes constant data and address data to extended memory
(maximum address 100000h) then reads the new data and compares the result
with the original data.
The constant data is FFh, AAh, 55h, and 00h.
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Satellite 1400/2400 Maintenance Manual (960-364/365)

3.5 Memory Test