• Imran Haider (5/5) Aug 03 2002 Hi...
• Nic Tiger (7/12) Aug 04 2002 As far as I know, only floppy drives are concerned . Since timer is not
• roland (5/14) Aug 04 2002 our program revector timer interrupt and change its frequency.
• KarL (5/19) Aug 08 2002 Yeah, but do you also called the previous timer interrupt simulating the
• Roland (10/13) Aug 09 2002 sometime yes, sometime no..

"Imran Haider" <coderunner mac.com> writes:

Hi...
    I heard that revectoring 0x08 (hardware clock) interrupt to speed up
system clock can cause hard-drive access problems. Is it true?

If so, what kind of problems? For example, is it data corruption or just
slow read/write.

"Nic Tiger" <nictiger pt.comcor.ru> writes:

As far as I know, only floppy drives are concerned . Since timer is not
counting as usual (55ms), system may have problems with delays/sync when
working with floppies.

But I haven't heard about anything like this for harddrives.

Nic Tiger.

"Imran Haider" <coderunner mac.com> wrote in message
news:aihpk2$sgq$1 digitaldaemon.com...
 Hi...
     I heard that revectoring 0x08 (hardware clock) interrupt to speed up
 system clock can cause hard-drive access problems. Is it true?

 If so, what kind of problems? For example, is it data corruption or just
 slow read/write.

roland <--nancyetroland free.fr> writes:

Imran Haider a écrit :
 
 Hi...
     I heard that revectoring 0x08 (hardware clock) interrupt to speed
 up
 system clock can cause hard-drive access problems. Is it true?
 
 If so, what kind of problems? For example, is it data corruption or
 just
 slow read/write.

our program revector timer interrupt and change its frequency.
8 years customers use it everyday, all day long (machine tool).
never notice special program with hard drive.

roland

"KarL" <none nowhere.org> writes:

Yeah, but do you also called the previous timer interrupt simulating the
55ms date time interrupt.

I think Imran is talking about revectoring without simulating the old 55ms.

"roland" <--nancyetroland free.fr> wrote in message
news:3D4DA86E.B8ED28A6 free.fr...
 Imran Haider a écrit :
 Hi...
     I heard that revectoring 0x08 (hardware clock) interrupt to speed
 up
 system clock can cause hard-drive access problems. Is it true?

 If so, what kind of problems? For example, is it data corruption or
 just
 slow read/write.

 our program revector timer interrupt and change its frequency.
 8 years customers use it everyday, all day long (machine tool).
 never notice special program with hard drive.

 roland

Roland <rv ronetech.com> writes:

KarL a écrit :

 Yeah, but do you also called the previous timer interrupt simulating the
 55ms date time interrupt.

sometime yes, sometime no..
i think the only thing the default int 8 do is to call int 1ch and update the
dos date/time.
if you don't call it at all, file date/time stays as in the last boot
date/time.
you are right, it can be a problem.
if so, there must be a way to uptade dos date/time by hand from rtc as it is
automatically done at boot.

 I think Imran is talking about revectoring without simulating the old 55ms.

roland