3-10
T200, T200CS
3.5
Memory Test
To execute the Memory Test, select
2
from the DIAGNOSTIC TESTS menu and tap or press
Enter
. Select a subtest to execute and tap or press
Enter
.
Subtest 01
RAM constant data (real mode)
This subtest writes constant data to conventional memory (0 to 640 KB), then
reads the new data and compares the result with original data.
Constant data is FFFFh, AAAAh, 5555h, and 0000h.
Subtest 02
RAM address pattern data (real mode)
This subtest writes address pattern data created by the exclusive-ORing
(XORing) to the address segment and address offset in conventional memory
(program end to 640 KB), then reads the new data and compares the result
with original data.
Subtest 03
RAM refresh (real mode)
This subtest writes a 256-byte unit of constant data to conventional memory (0
to 640 KB) then reads the new data and compares the result with original data.
Constant data is AAAAh and 5555h.
NOTE:
There is a short delay between write and read operations, depending on
data size.
Subtest 04
Protected mode
This subtest writes constant data and address data to extended memory (from
100000h to the maximum address) then reads new data and compares the
result with original data.
Summary of Contents for T200
Page 23: ...T200 T200CS 2 3 Figure 2 1 Troubleshooting Flowchart 1 2 ...
Page 24: ...2 4 T200 T200CS Figure 2 1 Troubleshooting Flowchart 2 2 ...
Page 82: ...3 32 T200 T200CS ...
Page 90: ...3 40 T200 T200CS Head XX Sector XX Model name ...
Page 154: ...B 2 T200 T200CS Figure B 2 Upper System Board FOGSD2 Back ...
Page 156: ...B 4 T200 T200CS B 2 Lower System Board FOGSU2 Figure B 3 Lower System Board FOGSU2 Front ...
Page 157: ...T200 T200CS B 5 Figure B 4 Lower System Board FOGSU2 Back ...
Page 170: ...T200 T200CS D 1 Appendix D USA Display Codes Table D 1 USA Display Codes ...
