LZ-Adv: ROM Pages

Subject: LZ-Adv: ROM Pages
From: Mark and/or Esmeralda Lybrand <maryesme@3-cities.com>
Date: Wed, 06 Nov 1996 21:16:06 -0800
In-Reply-To: <>

Hi all.


Thanks for the help on my program.  I feel pretty stupid not realizing 
that ret z meant return if the zero flag was set (especially seeing how 
I have my list of Z80 instructions right in front of me).  


I had placed the instructions:


ld a,4
out (5), 4


at the beginning of my program as I had read somewhere else that this 
set of instructions was to initialize the graphics screen.  Upon your 
advice, I have since verified that that was incorrect.  I understand 
fromn the TI-RAM.txt that by assigning the value 4 to port #5 I am 
accessing ROM page 4 (where you guys tell me FIND_PIXEL is located).  
The questions I had were:  Is there anything else of interest on ROM 
page 4?  I assume there are other ROM pages; is there anything of 
interest on those?  And finally....  this mysterious ROM dumping... how 
can I do it and where can I find out more about it?


Thanx all


Mark :)
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-- 




"No hay mal que por bien no venga" 
 - Spanish proverb


Mark and Esmeralda Lybrand
1330 West 10th Avenue #51
Kennewick WA 99336-6070
USA


Tel: (509) 586-1807
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