Re: Is there a //e, //c DHR viewing program???????

[ddkilzer@iastate.edu (David D Kilzer)]

Note: the Followup-To line has been set to move this thread over to
csa2.programmer.


jchappel@nyx.cs.du.edu (Jeanne Chappell) writes:

>I am looking for a PD, shareware, freeware ...  program for NON-IIGS users
>to view DHR pictures.  Are all of the viewers out for the IIGS?  I have a
>IIGS but want to put a program on our upcoming users group disk-of-the-month
>so that the //e, //c people can view DHR pictures.


There is a way to do this from BASIC.  You just have to load the file
into memory, move the second page to aux memory, and POKE a couple soft
switches to turn on DHR.  Depending on whether it's in Dazzle Draw
format or Beagle Bros. format, you either load the file straight into
memory (DD format) or load the pages in reverse order (BB format).  It's
safe (99% of the time) to assume the picture is in DD format.

I don't remember exactly how to move the second page to auxmem or which
softswitches to use.  Can someone provide some BASIC code to do this?
(BTW, I looked in //e technote #03, but couldn't come up with a quick
solution--the "quick & dirty" procedure to load an image and display it
was removed for more programmer-type material. :^)

Dave
-- 
David D. Kilzer               \                ST:TNG _Relics_
Computer Engineer 3           /       Capt. Montgomery Scott ("Scotty")
ddkilzer@iastate.edu          \   "I may be a captain by rank, but I never
Iowa State University, Ames   /    wanted to be anything but an engineer."