Your problem with Bordland. There might be a fix for it. A web
downloadable TRS
can catch the error when it happens and correct it. It occurs when
software was written with PASCAL.
Do a Google search for it It was written by a German.
DS
On Thu, 8 May 2014 19:19:28 -0300 "Marcos Favero Florence de Barros"
<fav...@mpcnet.com.br> writes:
> Hi,
>
> A couple of years ago I noticed that, in some computers, when
> the Up, Down, Left or Right keys were held pressed for several
> seconds, sometimes they acted as numeric keypad keys, i.e.,
> instead of just moving the cursor in these directions, they
> actually *wrote* the characters 8, 2, 4 or 6 respectively.
>
> These are *not* the numeric keypad keys, but the four-key
> cluster between the alpha and the numeric keypads.
>
> Let me state the whole thing once more, to avoid
> misunderstanding.
>
> The keys involved are not the numeric keypad keys. However,
> the effect is *as if* we were using the numeric keypad arrow
> keys with the NumLock feature off, and these keys, when held
> pressed, would act most of the time as per NumLock off (move
> the cursor), but sometimes -- say, one in 30 iterations --
> would act as if NumLock was on (write digits 2, 4, 6, 8).
>
> This is of course serious, as you may inadvertently write a
> digit in your text when you merely wanted to move the cursor.
>
> This usually happened in old computers (early Pentiums) donated
> for use in my Health Center volunteer work. At the time I
> thought it was some hardware fault because the machines were old
> and presumably worn out.
>
> Actually I used this as a test to evaluate if the machines were
> reliable. I saw this happen in several computers, and still have
> one of those. All tests were done with pure FreeDOS.
>
> One trick that apparently eliminates the problem completely is
> keeping NumLock off. (This may sound odd, because NumLock is
> supposed to change the behaviour of the numeric keypad keys,
> whereas we are talking about the other arrow keys here.)
>
> Because this is a keyboard issue, I (rather vaguely) remember
> trying MKEYB.EXE by Tom Ehlert instead of the standard FreeDOS
> KEYB.EXE, but the problem remained.
>
> Today, however, for the first time, the same problem happened
> with my own computer -- a machine I have been using intensively
> for over a year, and which so far has been completely reliable.
> An old text editor was running which requires reducing processor
> speed because of the Borland runtime 200 bug. I use Eric's FDAPM
> to reduce the speed. The problem was exactly the same as
> described above, and it also disappeared when the NumLock
> feature is off. It also disappeared when the processor was
> returned to its full speed (1 GHz).
>
> So perhaps it is not a hardware fault of old computers, but some
> other issue. As I never had this happen with MS-DOS which I used
> from 1995 to 2007, I thought it might be a FreeDOS issue.
>
> On a side note, when I started running the Health Center
> database in a network 2 years ago, with all machines running
> FreeDOS, a problem arose which *also* involved keeping the Up,
> Down, Left or Right keys pressed for a few seconds in the client
> machines. The effect was that the whole network crashed.
>
> I mention the network problem just because it was also triggered
> by keeping the same keys pressed. I discussed the issue in our
> list, and several people responded. The solution was to run
> MS-DOS in the server. Clients continued to run FreeDOS, and the
> problem never came up again. It seemed that the problem was
> related to running FreeDOS in a network.
>
> In today's issue, there is no network involved. This is a
> standalone machine I use at home as my main computer, and it has
> been very reliable so far. I also run Puppy Linux and Seamonkey
> or Nightly in it to browse the web. So apparently it is not a
> hardware problem.
>
> Has anyone experienced anything like that? Any idea what it
> might be?
>
> Regards,
>
> Marcos
>
>
>
> --------------------------------------
> Marcos Fávero Florence de Barros
> Campinas, Brazil
>
>
>
>
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