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From: pnl@hpfinote.HP.COM (Peter Lim)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: XT HDD controllers with AT machines problems
Message-ID: <36690021@hpfinote.HP.COM>
Date: 3 Oct 90 17:53:27 GMT
References: <15420001@hpsgm2.sgp.hp.com>
Organization: Hewlett Packard CICD
Lines: 25

> I have noticed a problem when using XT-class HDD controllers with
> AT-class machines (this includes 8086 machines with AT-type BIOSes).
> 
> The problem is : The HDD works but any access to the HD is always
> preceded by a long pause before the HD starts working (ie the drive
> busy lights come on).
> 
> Anybody have any explanation for this behaviour or any cures for it?
> 
The XT controller must be putting the HD in low power standby mode
when not accessed. My DTC-6280 controller has such a setting on board.
When I enable it, every disk access is preceded with a pause. Diabling
this means that by hard disk light stays on all the time.


Regards,                       ## Life is fast enough as it is ........
Peter Lim.                     ## .... DON'T PUSH IT !!          >>>-------,
                               ########################################### :
E-mail:  plim@hpsgwg.HP.COM     Snail-mail:  Hewlett Packard Singapore,    :
Tel:     (065)-279-2289                      (ICDS, ICS)                   |
Telnet:        520-2289                      1150 Depot Road,           __\@/__
  ... also at: pnl@hpfipnl.HP.COM            Singapore   0410.           SPLAT !


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