UMBPCI settings on 845G/GL - China DOS Union Forum - China DOS Union

On 845G/GL, using the settings auto-detected by UMBPCI, the usable UMB obtained is very small, and as soon as HIRAM is used the machine hangs. After many tests and N crashes, I finally got the two to work together and obtained more UMB. I'm sharing the settings with everyone here, and hope others will also share their successful settings on 845-series machines so we can compare notes. My settings worked on the Acorp 4D845G and PCQS QS-I845GL+ motherboards. The settings are as follows:
DEVICE=UMBPCI.SYS /I=D400-EFFF
DEVICE=HIRAM.EXE /X=CC00-D0FF

In addition, after testing on the PCQS QS-I845PE+ (845PE chipset), I found that the UMBPCI setting stays the same, but HIRAM needs to be changed to:
DEVICE=HIRAM.EXE /x=d000-d5ff /x=d700-d7ff /x=d900-dbff /x=dd00-deff /x=ed00-eeff

Write out the process too. It may be more useful than the result.

I didn't keep a detailed record of the exact process, and it was quite tedious, so I forgot it long ago. Roughly, I first didn't use HIRAM, and based on the values detected by UMBPCI, I added the unused parts one by one using a halving method and tested them until the usable UMB was maximized without crashes; then I added HIRAM, referred to the memory allocation map it detected, and again used the halving method to gradually narrow down the range, identify the memory segments that caused crashes, and exclude them.

Floor1　jmcarl	Posted 2003-10-05 00:00
中级用户　Posts 73　Credits 355
On 845G/GL, using the settings auto-detected by UMBPCI, the usable UMB obtained is very small, and as soon as HIRAM is used the machine hangs. After many tests and N crashes, I finally got the two to work together and obtained more UMB. I'm sharing the settings with everyone here, and hope others will also share their successful settings on 845-series machines so we can compare notes. My settings worked on the Acorp 4D845G and PCQS QS-I845GL+ motherboards. The settings are as follows: DEVICE=UMBPCI.SYS /I=D400-EFFF DEVICE=HIRAM.EXE /X=CC00-D0FF In addition, after testing on the PCQS QS-I845PE+ (845PE chipset), I found that the UMBPCI setting stays the same, but HIRAM needs to be changed to: DEVICE=HIRAM.EXE /x=d000-d5ff /x=d700-d7ff /x=d900-dbff /x=dd00-deff /x=ed00-eeff

Floor2　iceboy	Posted 2003-10-05 00:00
银牌会员　Posts 512　Credits 1,681
Write out the process too. It may be more useful than the result.

Floor3　jmcarl	Posted 2003-10-05 00:00
中级用户　Posts 73　Credits 355
I didn't keep a detailed record of the exact process, and it was quite tedious, so I forgot it long ago. Roughly, I first didn't use HIRAM, and based on the values detected by UMBPCI, I added the unused parts one by one using a halving method and tested them until the usable UMB was maximized without crashes; then I added HIRAM, referred to the memory allocation map it detected, and again used the halving method to gradually narrow down the range, identify the memory segments that caused crashes, and exclude them.