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3.7 Memory Test
3 Tests and Diagnostics
PORTEGE R200 Maintenance Manual (960-519)
[CONFIDENTIAL]
3-17
3.7 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 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
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 (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 way 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.
Содержание Portege R200
Страница 10: ...x CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Страница 12: ...1 Hardware Overview 1 ii CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 1 Hardware Overview ...
Страница 34: ...1 Hardware Overview 1 7 AC Adapter 1 20 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 35: ... CONFIDENTIAL Chapter 2 Troubleshooting ...
Страница 36: ...2 Troubleshooting 2 ii CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 2 ...
Страница 40: ...2 Troubleshooting 2 vi CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 103: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
Страница 104: ...3 Tests and Diagnostics 3 ii CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 3 ...
Страница 211: ... CONFIDENTIAL Chapter 4 Replacement Procedures ...
Страница 212: ...4 Replacement Procedures 4 ii CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 4 ...
Страница 216: ...4 Replacement Procedures 4 vi CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 281: ... CONFIDENTIAL Appendices ...
Страница 282: ...Appendices App ii CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 288: ...Appendices App viii CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 294: ...Appendices Appendix A Handling the LCD Module A 6 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 302: ...Appendices Appendix B Board Layout B 8 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 328: ...Appendices Appendix C Pin Assignment C 26 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 338: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 340: ...Appendices Appendix F Wiring diagrams F 2 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 342: ...Appendices Appendix G BIOS rewrite procedures G 2 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 344: ...Appendices Appendix H EC KBC rewrite procedures H 2 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...
Страница 346: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL PORTEGE R200 Maintenance Manual 960 519 ...