Mark Wilkinson wrote:

>
>I used to work for a small company in the West-Country in England (who
>shall remain nameless - heh heh heh) who had a dusty PC sitting in a corner
>which was used for EDI. One day, a guy from the EDI software vendor arrived
>and did an upgrade. Needless to say, the thing stopped working correctly.
>It would be OK for 12 hours, then DOS would crash with "Too many files
>open".
>
>Apparently, there was a rogue program in the suite which was leaving a file
>open every time it ran. The Vendor's solution was to write a little program
>called REBOOT.EXE which was scheduled to run once in every 24 hours <gg>
>Problem solved!
>
>Now if I could just get hold of the source......
>
>Mark Wilkinson
>

The program probably had something like this in-line assembler in it.

 long   BootVec = 0xF000FFF0;
    __asm
        {
        MOV AH, 0Dh
        int 21H
        MOV AX, 0h
        MOV DS,AX
        MOV AX, 40h
        MOV ES,AX
        OR WORD PTR ds:[17h],0Ch
        MOV AX,4F53h
        INT 15h
        MOV WORD PTR ES:[72h], 0000h

        MOV AX, 0F000h
        MOV DS,AX
        JMP BootVec
        INT 19h
        }

This is OK in DOS but I would not like to say what would happen to a 32bit OS!


Oh BTW I have included my e-mail address in my signature (Ken).

Ken Vickers

Manager LINKWAY Development and Support
Computing Solutions Limited

TEL +44 (0) 1905 794400
FAX +44 (0) 1905 794464

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