-----Mensaje original-----
De: Maarten ter Huurne <[EMAIL PROTECTED]>
Para: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Fecha: domingo 21 de junio de 1998 3:50
Asunto: Re: Problems with assembler
>>I want to write data to the Pattern Table of Screen 2. Doing it from BASIC
>>with VPOKE and VPEEK works good, but in assembler not. I've write this
>>little program:
>Why don't you simply go through the loop NUMCHAR*8 times? You gain very
>little speed by doing the last VPOKE outside the loop. Besides, when your
>assembly programs become larger, the size of your code is as important as
>the speed, believe me.
Thanks! It was not a good coded example...
>I can't spot anything wrong. Maybe I am overlooking something, but...
>There is always a possibility you should be aware of: maybe the code is
>fine, but you are expecting to see the wrong thing. For example: did you
>set the values in the color table to such values that would enable you to
>see the changed characters? You might have seen them black on black...
Oh! It's true... what an "stupid" error! That was the problem, I were seeing
black on black!
The "problem" was that, when doing it from BASIC with VPOKEs, i see the
images white on blue, and I presumed that in assembler would be the same.
But now, writing the correct data on the colour table of screen 2 it works
fine.
Thanks!
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