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From: gbbrooks@sybil.cs.Buffalo.EDU (G. Brandon Brooks)
Newsgroups: comp.sys.amiga.tech
Subject: Amiga Sprites - why do they do this?
Message-ID: <16943@eerie.acsu.Buffalo.EDU>
Date: 5 Feb 90 14:42:42 GMT
Sender: nobody@acsu.Buffalo.EDU
Reply-To: gbbrooks@sybil.cs.buffalo.edu (G. Brandon Brooks)
Organization: SUNY/Buffalo Computer Science
Lines: 37


	I ran across this strange occurance about a month ago, and I was
wondering if anyone here could explain the cause of this.
	I'm developing a game where I use a clock in the upper right corner of
the screen with 4 sprites. The numbers that the clock uses are of a special
graphics font that I designed and saved as an IFF brush. I loaded the brush in
and proceeded to put a time up like; 2:00. The following appeared; 2: 0
(the FIRST '0' is missing). Others below:
        Time    What the Amiga shows
        ----    --------------------
	2:00       2: 0
        1:59       1:59
        1:58       1:58
        1:57       1:57
        1:56       1:56
        1:55       1: 5
        1:54       1:54
        1:53       1:53
        1:52       1:52
        1:51        :51
        1:50       1:50
	
	Okay, what apparently happens is that if the SAME TWO numbers appear
on the same line, the first of the doubled digit will not appear.
	I took the pictures from the SAME memory location, in that:
	Sprite[1].posctldata := (example) 1234567;
        Sprite[2].posctldata := 1234567;

	But, if I copy the data in 1234567 to another location, say 11111,
        Sprite[1].posctldata := 1234567;
        Sprite[1].posctldata := 11111;
	The NUMBERS DO NOT DISAPPEAR!!!!!!! 1:55 will appear as 1:55.
	
	Why when the data for TWO sprites come from the SAME memory location
will the Amiga only show ONE of them?????

			-Bewildered Brandon in Buffalo