Re: How to load DHR graphics from BASIC?

[Rubywand <rubywand@swbell.net>]

Supertimer writes ...
> 
> How do you do it?

 ....


     For a hi-res pic, of course, you can just BLOAD the pic file into
hi-res 'page 1' or 'page 2' memory and toggle a few softswitches via
PEEKs. This loads and displays the hi-res pic under BASIC without any
need for calling special machine code routines.

     The catch with double-hires (DHR) is that you need to move half of
the BLOAD-ed DHR pic file into Aux memory. To display a DHR pic, you can
...

BLOAD the DHR pic at $2000 (it occupies $2000-$5FFF in main mem)
CALL a routine to move $2000-$3FFF to $2000-$3FFF in Aux. mem
CALL a routine to move $4000-$5FFF to $2000-$3FFF
Set softswitches to display the pic.




Rubywand