Detecting inserted floppy drive WAS: Raymond Check discusses MS DOS Floppy Disk Cache

[Ali]

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Fred
> Cisin via cctalk
> Sent: Wednesday, October 02, 2019 2:58 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Detecting inserted floppy drive WAS: Raymond Check
> discusses MS DOS Floppy Disk Cache
> 
> On Wed, 2 Oct 2019, Ali via cctalk wrote:
> > Just wondering if anyone (Chuck, Fred?) knows what is the exact
> technique referred to in this other post by Raymond?
> > devblogs.microsoft.com/oldnewthing/20090402-00/?p=18643
> 
> As I understnd it, they just used a stopwatch and watched a couple of
> their people change disks.
> Since it was always 2 seconds or more, they used that as the number.
> 
> 

Fred,

This is a different blog post. In this one he talks about how they found a
way to see if a disk was inserted in the floppy drive without spinning up
the motor....

Ali