Re: [stella] tutorial progress

[Glenn Saunders <cybpunks2@xxxxxxxxxxxxx>]

You have 22 + 53 which is 75 cycles, not 76.

Wouldn't it be 54 cycles?

I also think it might be good to have an alternate diagram that is more 
WYSIWYG, in other words, superimposed onto a television screen.  The reason 
being that on a real TV, horizontal blank expresses itself as being 
horizontal overscan on both the left and right side of the screen.  As far 
as 2600 coding goes, it looks like all the overscan is on the left which 
isn't true in a visual sense.

Nobody has ever really made any detailed charts that show where the beam 
really is and when.

For instance, in a typical program, the beam is not quite at the right hand 
side when you issue a WSYNC.  So to visualize this you could show a 
staggered set of scanlines to indicate the timing for when each scanline's 
code ends and the TIA's WSYNC function kicks in.

Also, you should visually chart out safe zones for when it's safe to store 
and rewrite each of the playfield registers in both reflected and repeated 
modes.



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