Re: New project announcement : BlueFlash - Bluetooth/Disk controller/D

["Alex Freed" <alexf@mirrow.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message 
GKydne37w5A6uunbnZ2dnUVZ_jqdnZ2d@comcast.com">news:GKydne37w5A6uunbnZ2dnUVZ_jqdnZ2d@comcast.com...
>
> I'm wondering if successive reads to the "disk controller" data latch
> will reveal data shifting in dynamically, for example, and if the
> data pointer continues to "rotate" virtually even when the "drive"
> is not being read.  (This would suggest the need for a virtual "speed
> adjustment" as well.)
>

I faced the same issues designing the PseudoDisk][.

Just always giving the next complete byte doesn't work well even with DOS 
3.3
as RTWS wants to see bytes under the head changing so that it can decide 
that the
disk is spinning.
At the same time I didn't want to spend too much time emulating the real 
device
in a lot of details for two reasons:
1. I'm mainly a hardware guy.
2. I expected the community to improve the open source project.

The quick hack: present a valid data byte on every odd access and a zero at 
every even access.

-Alex.