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DOS疑难解答 & 问题讨论（解答室） » Question about using MASM611 under MSDOS7.1

Floor1　pluto_zj	Posted 2003-05-04 00:00
初级用户　Posts 19　Credits 162
Every time I exit MASM611's graphical editor PWB, this appears: unable to restore screen image Then it drops to the DOS environment and shows a memory allocation error message: memory allocation error cannot load COMMAND, system halted Then it hangs. I have 256 MB of memory. The result from MEM is roughly as follows: Total Conventional Upper 650k 609k 41k

Floor2　Dark-Destroy	Posted 2003-05-04 00:00
元老会员　Posts 3,551　Credits 8,312
Then can the command editing line be used??

Floor3　Wengier	Posted 2003-05-04 00:00
系统支持　Posts 10,521　Credits 27,736
A typical old software problem. From my testing, I found that this is a BUG in PWB itself, probably because back then memory was still quite small. If free XMS memory is greater than 32MB, PWB will have this problem. The solution is to use software like XMSDSK to reduce free XMS memory to below 32MB before running it.

Floor4　pluto_zj	Posted 2003-05-04 00:00
初级用户　Posts 19　Credits 162
I followed wengier's method and reduced the memory to a bit over 10 MB before running it, and then it worked. It really felt satisfying While thanking the two moderators, I still have to trouble you with two more questions: 1. Before installing MSDOS71, I once tried installing FREEDOS 8H1. The installation went smoothly, and there were also the two files kernel.sys and command.com in the root directory, but after rebooting the system the boot failed with " freedos kernel go! " and I don't know why. 2. My USB mouse also can't be driven http://www2.zzu.edu.cn/ie/newdos/dispbbs.asp?boardID=11&ID=2321 I'm puzzled...

Floor5　Dark-Destroy	Posted 2003-05-04 00:00
元老会员　Posts 3,551　Credits 8,312
I think it might be an MBR problem. Try using fdisk/mbr, then install freedos once more and see.

Floor6　pluto_zj	Posted 2003-05-04 00:00
初级用户　Posts 19　Credits 162
Dark-Destroy: I use third-party software to boot XP, LINUX, and DOS systems, so... hehe, it's just that I don't quite understand why under the same circumstances MSDOS can boot but FREEDOS can't.