From: Krogg 
Subject: pointers:help
 
I am using trypb32 and have ordered 3.5 for dos.(waiting for it
to come in mail :) )
 
What i want to do is make an array that is 100x100 and
store the address for a 100x100 section of the mode 13h
vga screen.then i can do like
"@scrn(x,y)=pixelcolor"
the help file says that pointers are faster than poke and peek
and using an array would be faster than
saying "poke 320*y+x" anyhow cause it would eliminate a multiply
and an add.
I tryied doing like
-----------begin code-----------------
dim dynamic scrn(100,100) as byte ptr 'dim pointer array
 
for x=1 to 100                        'store addresses
for y=1 to 100                        'in array
scrn(x,y)=(y*320+x)+&ha0000000        '(y*320+x) predone,sneeky huh?
next x
next y
 
asm mov ax,&h13                       'chained 320x200 256 vga
asm int &h10
 
 
for x=1 to 100                        'show test pattern
for y=1 to 100                        'It works good enuf
@scrn(x,y)=y+x                        'dont know if faster yet though
next y                                'BTW y+x ranges from 2-200 and
next x                                'its just some diagonal lines
 
poop:
a$=inkey$                             'lame loop,but it werks.
if a$="" then goto poop
 
asm mov ax,&h03                       'reset normal 80x25 text mode
asm int &h10
cls
?"done"
 
end
-----------end code--------------------
Hey it works great,but.
I cant get it to make the array 320x200 (319,199)
can some one help?
acutualy i cant get much bigger at all,I get
 "dim dynamic scrn(100,100) as byte ptr"
Error 9: Subscript out of range
 I tryied
dim huge scrn(100,100) as byte ptr
and i get "Out of memory" (could it be win95 killing me?)
dim absolute ect......... doesnt help either
Please tell me there is a way.I know this must be lame
but I am stumped.I hope my copy of 3.5 gets here quick
cause i bet Chapter 5 of the User's Guide as the help
file says could help.But am i just hope less?
 
 Any help diming big arrays at all would help too :).
 
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