[Coco] replacing main rom
Arthur Flexser
flexser at fiu.edu
Sat May 14 14:20:33 EDT 2005
On Sat, 14 May 2005 jdaggett at gate.net wrote:
> Art
>
> I am used to describing what is on the screen as a means of an
> electrron beam striking a set of phosphors that displays what is
> seen. The problem with to fast a blink rate is such that the computer
> blinks a character faster than the electron beam can get back to that
> spot on the CRT to show what the computer has done. Even though
> the computer blinks a character at a certain rate, the viewer sees it
> at a slower rate due to the scan rate is too slow for the computer
> blink rate.
>
Yep, that's exactly what's happening here. Beyond a certain rate, it doesn't
matter how fast the blink attribute rate controlled by the GIME is; the
character will still have an irregular 30th of a second blink rate, due to the
frame rate being a 60th of a second and the fact that the character has a random
equal likelihood of being drawn as on or off in any given frame.
Art
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