Type of Memory Total Used Free
---------------- ----------- ----------- -----------
Conventional 655,360 67,568 587,792
Upper 54,736 52,976 1,760
Reserved 0 0 0
Extended (XMS) 267,266,608 9,279,024 257,987,584
---------------- ----------- ----------- -----------
Total memory 267,976,704 9,399,568 258,577,136
Total under 1 MB 710,096 120,544 589,552
Largest executable program size 587,696 (574K)
Largest free upper memory block 1,280 (1K)
MS-DOS is resident in the high memory area.
---------------------------------
大家可以看到Upper Memory差别非常大!这是怎么回事呢?