Thomas Harte a4ee697ed1 Quickie: head unload is scheduled only if the head is presently loaded.		2017-08-12 12:53:45 -04:00
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6845	Threw in support for the light-pen trigger.	2017-08-10 15:00:14 -04:00
8255	Improved comments.	2017-08-08 07:44:46 -04:00
8272	Quickie: head unload is scheduled only if the head is presently loaded.	2017-08-12 12:53:45 -04:00
AY38910	Subjectively, this might be more correct. It definitely prevents intermediate frequencies. More research required.	2017-08-08 17:58:35 -04:00