Re: [stella] Weekend update + timing issue

Subject: Re: [stella] Weekend update + timing issue
From: Joe Grand <jgrand@xxxxxxxxxxxxxx>
Date: Sun, 25 Feb 2001 11:50:42 -0500
Right, I'm trying to figure out why the text is flickering. 

For this particular version, all that should display is "ABCDEE" for the
score at the top, and a "SCSISIDE" logo a little bit beneath it. The
display will flicker if the score is set with the least-significant-digit
to "E" or "F" (e.g. 12345F, ABCDEE, etc.) Other scores work fine (ABCDED,
123456) and the screen doesn't flicker. 

I don't think is it the timing problem as Chris mentioned (I wasn't drawing
an entire screen since most of my kernel was commented out), so the screen
would indeed roll vertically (not on an emulator, though). I will attach
two binaries to this list (changing the number of lines drawn as per Chris'
suggestion, just to make things easier). Chris, with the two files below,
does the text flicker at all?

1) Score set to ABCDE0  - notice there is no flickering
2) Score set to ABCDEF  - notice there IS flickering for all the text on
the screen

Obviously, I'm trying to figure out why the text will flicker with an "E"
or "F" is the least-significant-digit. I am only using StellaX 1.1.3 right
now for testing. Maybe I should continue with my kernel and try to fix the
flicker later on?

The source was attached to my previous message. 

Also, what is the popular opinion for using UPPER or lower case opcodes in
my source? 

Sorry for the confusion? Thanks for the help..


At 01:07 AM 2/25/2001 -0800, you wrote:
>I don't know how it works on a real 2600, but on Stella I just get two text 
>displays and a black middle area.  The text displays are flickering for 
>some reason.

Attachment: ABCDE0.bin
Description: Binary data

Attachment: ABCDEF.bin
Description: Binary data

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