Re: [stella] My New Project - RRampage.bin

Subject: Re: [stella] My New Project - RRampage.bin
From: "Eckhard Stolberg" <Eckhard_Stolberg@xxxxxx>
Date: Mon, 12 Apr 2004 14:27:36 +0200
> Seems like my current positioning code could be retrofitted to use this
> trick.  The accompanying demo illustrated that those HMOVE blanks do
> disappear under special circumstances, even in Z26.  As the table shows,
> executing HMOVE at cycles 73 or 74 *should* hide the blank, however that
> just wasn't the case for me.  Perhaps the behavior is different when you
> have two non-zero HMPx's to contend with versus the one in the demo.

The table shows when the write to HMOVE has to happen so that the
extended HMOVE blank doesn't get enabled. The actual write happens
at the last cycle in a STA command. Therefore the STA HMOVE has to
start 3 cycles before 73 or 74 for this trick to work.

Ciao, Eckhard Stolberg

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