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From: notes@isucs1.UUCP
Newsgroups: net.micro.apple
Subject: Re: MEMORY MOVE ABOVE HGR2--
Message-ID: <509@isucs1.UUCP>
Date: Thu, 6-Feb-86 11:09:24 EST
Article-I.D.: isucs1.509
Posted: Thu Feb  6 11:09:24 1986
Date-Received: Sun, 9-Feb-86 08:04:47 EST
Sender: notes@isucs1.UUCP
Organization: Iowa State University
Lines: 43
Nf-ID: #R:uok:-450002200:isucs1:9900012:000:1353
Nf-From: isucs1!heins    Jan 24 01:07:00 1986

/***** isucs1:net.micro.apple / uok!vfoster /  4:21 am  Jan 23, 1986 */

>I have been having problems with a graphics program on my Apple //e
>which uses a shape table. The program's length is such that it spills
>into the region of memory for HGR graphics, causing lines to appear
>that shouldn't be there (also erasing the last portion of the program).
>The shape tables are stored in the HGR2 region of memory (which resides
>just above the HGR region). How can I, through machine language, basic,
>or whatever, move the starting point of the free memory above these 
>graphics pages. This would be a godsend in freeing up enough memory
>to get my program back on it's feet.
>			HELP! HELP!...please.
>				vlf
>				"babyface"
/* ---------- *>

   The bytes to change to set the memory usage for an Applesoft
   Basic program are
   
   $67  and $68
   
   These normally contain $00 and $08 respectively (addr = $800)
   
   to change the start of Applesoft's free memory do this
   
   Change $67 and $68 to whatever you like (in this case $67 = 0 &
   $68 = $60)
   
   From BASIC this is:
   
   POKE 103,0: POKE 104,96
   
   Add this line to the beginning of your program:
   
   5 IF PEEK (104)<>96 THEN POKE 103,0: POKE 104,96: ?:?CHR$(4)"RUN prog"
   
   Where "prog" is the name of the program.
   
			Hope this helps.
			
			Lee Heins
			/