Author: Russell Reagan
Date: 21:17:22 12/07/03
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On December 07, 2003 at 20:09:49, Richard Sutherland wrote: >Can someone explain why the early versions of Fritz don't work under Windows >2000 and XP? They're 32 bit programs which ran under Windows 95, 98 and Me, so >why not with the latest Windows and Fritz GUI's? Also, Windows XP is meant to >have a Windows 98 compatibility mode, so surely they should work under XP at >least? I am not exactly sure of all of the details, but I believe Windows 2000 and XP won't run programs that were written to run in real mode (the way DOS programs ran, where whatever program was running "owned" the whole computer). In Windows 95 and 98 you could still run them, and I guess since Me is based off of 98 it will too, but Windows 2000 and XP are based off of Windows NT, and I'm not sure that NT ever supported real mode programs (instead, they run in protected mode). I remember that Fritz was written in assembly language (or at least a significant portion), and usually that means real mode, since real mode is much nicer to program in for an assembly programmer (since your program owns the machine and don't have to share with other programs). That is my guess why it won't run on 2000 or XP.
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