Purple plague? Was:Re: [Coco] Any problem with connecting 2 floppies to one power supply?

[jimcox at miba51.com]

On Sun, 1 Feb 2004 20:00:33 -0500
  Gene Heskett <gene.heskett at verizon.net> wrote:
>That said, I did it for several years in my grass valley 
>e-disk 
>simulation running on os9, but its duty cycle was quite 
>low.  Never 
>had a problem with it, ever, other than dying wd-1773's 
>in the disk 
>controllers, it used up 3 of them in 13 years.  I think 
>the purple 
>plague ate them, a well known PMOS chip failure 
>mechanism.
>
>-- 
>Cheers, Gene

Gene:

Can you elaborate on the purple plague, and does anyone 
know if the wd-1773's are still available?

Jim