Memory Type Total = Used + Free
---------------- ------- ------- -------
Conventional 640K 50K 590K
Upper 19K 5K 14K
Reserved 384K 384K 0K
Extended (XMS)* 15,341K 493K 14,848K
---------------- ------- ------- -------
Total memory 16,384K 932K 15,452K

Total under 1 MB 659K 55K 604K

Total Expanded (EMS) 15,680 (16,056,320 bytes
Free Expanded (EMS)* 15,088 (15,450,112 bytes

* EMM386 is using XMS memory to simulate EMS memory as needed.
Free EMS memory may change as free XMS memory changes.

Largest executable program size 590K (604,192 bytes)
Largest free upper memory block 11K (11,328 bytes)
MS-DOS is resident in the high memory area.



需要什么设置阿？

你使用了EMS（扩充内存），它要在保留区使用64K内存作映射。它本身使UMB减少64K。另外可能有其他板卡占用了保留内存，最好用DOS的MSD测一下。

我用我的MS-DOS 7.10启动盘（选第二项UMBPCI方式）启动后，常规内存剩630K，UMB内存剩70多K：
http://newdos.yginfo.net/dosware/mdos71bd.zip